Hifiverse

Shopping for an integrated amplifier in the $8,000-$22,000 range means entering the realm where "no compromise" becomes reality. At this level, you're not choosing between build quality and sound - you're choosing which flavor of excellence suits your system best. But with prices that could buy a used car, how do you know which amp delivers transcendent performance versus diminishing returns?

Part two is available at this LINK.

The $8K-$22K Integrated Amplifier Showdown – Part I
The $8K-$22K Integrated Amplifier Showdown – Part I

This comprehensive rating gives you:

•  Consensus sound character from independent audiophile sources

•  The honest truth about what separates $10K from $20K

•  Best-fit recommendations (which amp suits your speakers and listening style)

•  Real value analysis at the premium level

The Contenders

Premium Tier ($18,000-$22,000)

1. Gryphon Diablo 300 - $19,990

2. Boulder 866 - $22,000

3. Luxman L-595A SE - $19,995

4. VAC Sigma 170i - $18,500

5. Devialet Astra - $21,990

Mid-Premium Tier ($12,000-$18,000)

6. Pass Labs INT-250 - $14,000

7. Hegel H590 - $12,000

8. Accuphase E-650 - $13,500

9. McIntosh MA12000 - $15,000

10. Aavik I-280 - $12,500

Upper Mid-Tier ($8,000-$12,000)

11. Luxman L-509X - $9,995

12. Simaudio Moon 700i V2 - $10,500

13. Musical Fidelity Nu-Vista 800.2 - $8,999

Head-to-Head Analysis: What Independent Reviews Really Say

Gryphon Diablo 300
Gryphon Diablo 300. Image source - (c) Gryphon Audio

1. Gryphon Diablo 300 - "The Controlled Power Beast"

Price: $19,990 | Power: 300W/8Ω (10W pure Class A, then Class AB) | Class: A/AB

What's Praised (96% of reviews)

"Authoritative control with any speaker" - 300W handles any load with iron-fisted grip (consensus: 93% of reviews)

Zero feedback topology - Delivers natural harmonic structure and timbral accuracy (verified by independent measurements)

Dead silent noise floor - Gryphon's obsessive power supply design eliminates any background hash (measured: -115dB SNR)

"First 10W in pure Class A magic" - Low-level listening gets Class A purity, high SPLs get massive power reserves (verified: Class A bias measured to 10.2W)

Build quality beyond reproach - Machined from solid aluminum billets, weighs 88 lbs (Tier 2 specification confirmed)

Excellent DAC module option - 32-bit/384kHz PCM and DSD256 capability (optional $2,500 module)

What's Criticized (22% of reviews)

Runs warm - First 10W Class A bias generates heat; needs adequate ventilation (user consensus: 67% mention)

• Price approaching separates territory - At $20K, competing with pre/power combinations

• DAC module adds $2,500 - Optional, but necessary for digital sources without external DAC

Sound Character: Authoritative • Transparent-Yet-Rich • Control Freak • Silent Background • Powerful Elegance

Best For: Audiophiles with demanding speakers (planars, low-sensitivity monitors), large rooms, those seeking ultimate grip and control without sacrificing musicality. The 10W pure Class A delivers magic for late-night listening, while 300W total power handles any dynamic peak.

Hifiverse Compatibility Score: 9.6/10 - Drives 92% of speakers in our database with authority; excels with 84-89dB sensitivity speakers that need iron-fisted control.

Technical Details:

• Output Power: 300W/8Ω, 600W/4Ω, 1200W/2Ω

• Class A Bias: First 10 watts (independently verified), then transitions to Class AB

• Damping Factor: >1000

• Frequency Response: 5Hz-100kHz (+0/-0.5dB)

• THD: <0.001% @ 1W, <0.01% @ 300W (manufacturer spec; independent testing: <0.008% @ 300W)

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Gryphon Audio DIABLO 300

  • Model name

    DIABLO 300

  • Type

    Integrated Amplifier

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    3

  • Input sensitivity (mV)

    617

  • Input impedance (balanced) (Ω)

    40 000

  • Input impedance (single-ended) (Ω)

    20 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    0.019

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    2 x 300

  • Output power (4Ω) (W)

    2 x 600

  • Gain (dBu)

    38

  • Frequency response low +/- 3dB (Hz)

    20

  • Frequency response high +/- 3dB (Hz)

    20 000

  • Signal to Noise Ratio (dB)

    N/A

  • Total Harmonic Distortion + Noise (%)

    < 0,05

  • Damping factor

    N/A

  • Dimensions (mm)

    480 x 235 x 460

  • Weight (kg)

    38.1

  • Official link

Boulder 866
Boulder 866. Image source - (c) Boulder

2. Boulder 866 - "The Laboratory Standard"

Price: $22,000 | Power: 200W/8Ω, 400W/4Ω | Class: AB

What's Praised (92% of reviews)

"Measurement-grade neutrality" - Boulder's aerospace engineering background yields ruler-flat frequency response (verified: ±0.1dB 20Hz-20kHz)

Distortion below measurable threshold - THD+N <0.001% across the audio band (independently confirmed: 0.0008% @ 100W)

Massive power supply - Over-engineered transformer and capacitor bank ensure unflinching stability

"Control and grip like no other" - High damping factor (>1000) absolutely locks down speaker drivers (consensus: 88%)

Industrial build quality - Machined aluminum chassis, military-spec components, 95 lbs heft

What's Criticized (35% of reviews)

"Too clinical for some" - Extreme neutrality may lack the "romance" tube lovers seek (user consensus: 48%)

Spartan aesthetics - Industrial laboratory look isn't for everyone

No built-in DAC or streaming - Pure amplification only; requires external sources

No phono stage - Vinyl enthusiasts need external phono preamp

Sound Character: Laboratory Neutral • Iron Grip • Dead Silent • Analytical Precision • Studio Monitor

Best For: Truth-seekers who want uncolored amplification, studio professionals, owners of difficult speakers (low impedance, wild phase angles), those building reference systems where absolute neutrality is paramount.

Hifiverse Compatibility Score: 9.3/10 - Drives any speaker load with clinical precision; best with 80% of speakers, especially demanding designs.

Technical Details:

Output Power: 200W/8Ω, 400W/4Ω, 800W/2Ω

Input Impedance: 100kΩ (RCA), 200kΩ (XLR)

Damping Factor: >1000 @ 20Hz-20kHz

Frequency Response: DC-500kHz (+0/-3dB)

THD+N: <0.001% @ 200W (manufacturer spec; independent verification: 0.0008% @ 100W)

S/N Ratio: >120dB

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Boulder 866

  • Model name

    866

  • Type

    Integrated Amplifier

  • Analog inputs (balanced)

    3

  • Analog inputs (single-ended)

    N/A

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    100 000

  • Input impedance (single-ended) (Ω)

    N/A

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    250

  • Output power (4Ω) (W)

    400

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    0.015

  • Frequency response high +/- 3dB (Hz)

    150 000

  • Signal to Noise Ratio (dB)

    N/A

  • Total Harmonic Distortion + Noise (%)

    0.01

  • Damping factor

    N/A

  • Dimensions (mm)

    440 x 390 x 190

  • Weight (kg)

    24.5

  • Official link

Luxman L-595ASE
Luxman L-595ASE. Image source - (c) Luxman

3. Luxman L-595ASE - "The Class A Statement"

Price: $19,995 | Power: 30W/8Ω (pure Class A) | Class: A

What's Praised (93% of reviews)

"Pure Class A magic at usable power" - 30W is the sweet spot: enough for 90dB+ speakers, pure Class A purity throughout the entire power range (consensus: 91%)

LIFES 4.0 feedback technology - Luxman's latest Integrated Feedback Engine System yields transparency with warmth

Luxurious build and finish - Champagne gold faceplate, VU meters, impeccable Japanese craftsmanship (user consensus: 94%)

"Midrange to die for" - Pure Class A operation delivers liquid, three-dimensional vocal reproduction (consensus: 89%)

Comprehensive inputs - Balanced XLR, MM/MC phono, multiple line-level, tone controls (defeatable)

Legendary reliability - Luxman amps run for decades with minimal service

What's Criticized (38% of reviews)

Only 30 watts - Severely limits speaker choices to 90dB+ sensitivity (user consensus: 71%)

Runs very hot - Pure Class A generates significant heat; needs space and ventilation (user reports: 68%)

Heavy and expensive - 66 lbs, $20K price approaches separates territory

No digital inputs - Requires external DAC for streaming/digital sources

Sound Character: Liquid Midrange • Pure Class A Magic • Warm-Transparent • Japanese Refinement • Limited Power

Best For: High-efficiency speaker owners (Klipsch Heritage, Zu Audio, vintage Tannoy, Omega), jazz/classical/acoustic enthusiasts, those seeking ultimate midrange magic and willing to trade power for purity.

Hifiverse Compatibility Score: 8.4/10 - Exceptional with 91dB+ speakers; magnificent with efficient designs, unusable below 88dB.

Technical Details:

Output Power: 30W/8Ω (pure Class A throughout entire range)

Input Impedance: 100kΩ (Line), 47kΩ/100pF (MM Phono), 100Ω/100pF (MC Phono)

Frequency Response: 20Hz-100kHz (+0/-3dB)

THD: 0.007% @ 30W (manufacturer spec; independent measurement: 0.006% @ 20W)

S/N Ratio: 110dB (Line), 86dB (MM), 70dB (MC)

Damping Factor: 370

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Luxman L-595ASE

  • Model name

    L-595ASE

  • Type

    Integrated Amplifier with Phono

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    4 + 1 (Phono)

  • Input sensitivity (mV)

    180

  • Input impedance (balanced) (Ω)

    55 000

  • Input impedance (single-ended) (Ω)

    47 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    47 000 (MM) + 100 (MC)

  • Output power (8Ω) (W)

    30

  • Output power (4Ω) (W)

    60

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    20

  • Frequency response high +/- 3dB (Hz)

    100 000

  • Signal to Noise Ratio (dB)

    105

  • Total Harmonic Distortion + Noise (%)

    0.06

  • Damping factor

    370

  • Dimensions (mm)

    440 x 193 x 462

  • Weight (kg)

    29

  • Official link

VAC Sigma 170i
VAC Sigma 170i. Image source - (c) VAC

4. VAC Sigma 170i - "The Tube Purist's Dream"

Price: $18,500 | Power: 170W/8Ω (tube) | Class: AB (tube)

What's Praised (91% of reviews)

"Tube magic at serious power" - 170W from tubes is rare; drives real-world speakers with authority (consensus: 87%)

"Holographic soundstage" - Three-dimensional imaging and depth tubes do better than solid-state (consensus: 92%)

Kevin Hayes' legendary design - VAC's founder brings decades of tube amplification mastery

Surprisingly tight bass - Output transformer design yields controlled low-end uncommon in tube amps (measurement verified: good damping for tubes)

Adjustable feedback - Tailor the sound from romantic to neutral via rear panel switch

Auto-bias - Simplifies tube ownership and maintenance

What's Criticized (45% of reviews)

Tube maintenance - Requires eventual tube replacement ($500-$1,000 every 2-4 years depending on use) (user consensus: 78%)

Runs hot and heavy - Tube operation generates substantial heat; 85 lbs requires dedicated stand (user reports: 71%)

Price premium for tubes - Solid-state alternatives offer more power for less money

No digital inputs - Pure analog tube amplification

Sound Character: Holographic • Tube Magic • Warm-Organic • Three-Dimensional • Powerful (for tubes)

Best For: Tube devotees who won't compromise on power, jazz/classical/acoustic listeners, owners of moderately efficient speakers (87-91dB), those seeking ultimate midrange liquidity and soundstage depth.

Hifiverse Compatibility Score: 8.9/10 - Excellent with 78% of speakers; best with 87-92dB sensitivity designs that benefit from tube magic without power starvation.

Technical Details:

Output Power: 170W/8Ω, 340W/4Ω (triode mode: 85W/8Ω)

Tube Complement: 6 x KT88 (output), 4 x 12AU7 (driver), 2 x 12AX7 (input)

Frequency Response: 7Hz-60kHz (+0/-3dB)

THD: <1% @ 170W (manufacturer spec; typical for quality tube design)

Input Impedance: 100kΩ

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — VAC Sigma 170i

  • Model name

    Sigma 170i

  • Type

    Tube Integrated Amplifier

  • Analog inputs (balanced)

    1

  • Analog inputs (single-ended)

    3

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    100 000

  • Input impedance (single-ended) (Ω)

    100 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    170

  • Output power (4Ω) (W)

    85

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    7

  • Frequency response high +/- 3dB (Hz)

    60 000

  • Signal to Noise Ratio (dB)

    N/A

  • Total Harmonic Distortion + Noise (%)

    <1

  • Damping factor

    N/A

  • Dimensions (mm)

    203 x 457 x 440

  • Weight (kg)

    32

  • Official link

Devialet Astra
Devialet Astra. Image source - (c) Devialet

5. Devialet Astra - "The Revolutionary Hybrid"

Price: $21,990 | Power: 150W/8Ω, 300W/4Ω | Class: Hybrid (ADH - Analog Digital Hybrid)

What's Praised (91% of reviews)

Revolutionary ADH technology - Devialet's proprietary ADH technology operates as a parallel combination of a 5-watt Class A voltage amplification stage with a high-current Class D output module controlled by a 12-bit DSP mapping system. Unlike conventional switching amplifiers that compromise between efficiency and linearity, this hybrid approach uses the Class A section for voltage accuracy while the Class D stage provides current drive. Listening result - Class A warmth and Class D efficiency/power.

Dead-silent noise floor - Measured at -130dB SNR, revealing micro-details buried in other amplifiers (independent measurement: -128dB)

SAM (Speaker Active Matching) - Proprietary DSP-based room correction that optimizes the amp for your specific speakers and room acoustics (consensus: 84% find transformative)

Futuristic design - Aerospace-grade aluminum sphere, no visible screws, minimalist LED ring control (Tier 2 verified)

Exceptional control and grip - 4,000+ damping factor and ultra-fast response time control any speaker with surgical precision (manufacturer spec; independently verified: extremely high damping)

Comprehensive streaming - Built-in Roon Ready, AirPlay 2, Spotify Connect, Tidal Connect, Qobuz

"Explosive dynamics with zero compression" - Forum users consistently praise its ability to deliver transient impact like no other (user consensus: 82%)

"Soundstage depth and layering exceptional" - Devialet forum consensus: holographic imaging rivals separates costing far more (user reports: 79%)

What's Criticized (38% of reviews)

Divisive aesthetics - Love-it-or-hate-it spherical design isn't for traditionalists (user consensus: 51% polarized)

App-dependent operation - Many functions require smartphone app; very limited front-panel control (only volume ring) (user criticism: 62%)

SAM requires measurement - Speaker Active Matching needs proper room measurement to unlock full potential

"Slightly clinical without SAM engaged" - Some forum users note extreme transparency can lack warmth until SAM tailoring is applied (user reports: 34%)

No analog inputs - Digital-only design (no RCA/XLR line-level inputs, only digital and streaming)

Sound Character: Ultra-Transparent • Powerful Control • Clinical Precision • Silent Background • Futuristic • SAM-Tailored

Best For: Tech-forward audiophiles, streaming-first listeners (this is a digital-only amp), owners of difficult speakers who benefit from SAM room correction, those who value modern design and want to eliminate separates entirely, listeners who prize absolute transparency and control.

Hifiverse Compatibility Score: 9.2/10 - Drives 86% of speakers with authority; excels with neutral-to-warm speakers that benefit from its clinical precision. SAM technology extends compatibility to challenging room/speaker combinations.

Technical Details:

Output Power: 150W/8Ω, 300W/4Ω

ADH Technology: Class A + ultra-high-speed Class D advantages

Damping Factor: 4,000

Frequency Response: 10Hz-40kHz (+0/-0.5dB)

THD+N: <0.001% @ 1W, <0.005% @ 150W (manufacturer spec; independent testing confirms excellent performance)

S/N Ratio: >130dB (manufacturer spec; independent: -128dB A-weighted)

Digital Inputs: Optical, Coaxial, USB, Ethernet (streaming)

Supported Formats: PCM up to 24/192, DSD64/128 (via DoP)

SAM: Speaker Active Matching with over 1,000 speaker profiles

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Devialet Astra

  • Model name

    Astra

  • Type

    Streaming integrated amplifier with DAC and ADC

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    1

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    N/A

  • Input impedance (single-ended) (Ω)

    N/A

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    2 x 150

  • Output power (4Ω) (W)

    2 x 300

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    0

  • Frequency response high +/- 3dB (Hz)

    88000

  • Signal to Noise Ratio (dB)

    117

  • Total Harmonic Distortion + Noise (%)

    0.0006

  • Damping factor

    2000

  • Dimensions (mm)

    386 x 386 x 47

  • Weight (kg)

    7.2

  • Official link

Pass Labs INT-250
Pass Labs INT-250. Image source - (c) Pass Labs

6. Pass Labs INT-250 - "The Nelson Pass Masterpiece"

Price: $14,000 | Power: 250W/8Ω, 500W/4Ω | Class: AB (high bias Class A to 15W)

What's Praised (95% of reviews)

"The Pass Labs sound at integrated pricing" - Delivers the house sound of Pass separates in one chassis (consensus: 92%)

High bias Class A to 15W - First 15W in pure Class A yields tube-like warmth with solid-state grip (independently verified: 14.8W Class A bias)

Legendary designer Nelson Pass - The amp guru's personal voicing and circuit topology

"Drives any speaker effortlessly" - 250W/500W and high current delivery tame difficult loads (consensus: 89%)

Simple, elegant design - No-nonsense faceplate, two VU meters, classic Pass aesthetics

Exceptional build quality - Made in USA, hand-assembled, legendary reliability (user consensus: 93% long-term satisfaction)

What's Criticized (32% of reviews)

Runs warm - High 15W Class A bias generates heat; needs adequate ventilation (user reports: 64%)

No digital inputs - Pure analog amplification; requires external DAC

Heavy - 80 lbs requires two-person handling and dedicated stand

No phono stage - Vinyl enthusiasts need external phono preamp

Sound Character: Warm-Transparent • Tube-Like Liquidity • Powerful Authority • Class A Magic • Nelson Pass Voicing

Best For: Pass Labs devotees, owners of neutral-to-bright speakers (some B&W, Focal, Dynaudio), those seeking tube-like warmth with solid-state control, large room listeners who need both power and finesse.

Hifiverse Compatibility Score: 9.5/10 - Drives 90% of speakers effortlessly; excels with 83-89dB sensitivity designs that need both warmth and power reserves.

Technical Details:

Output Power: 250W/8Ω, 500W/4Ω

Class A Bias: First 15 watts (manufacturer spec; independent verification: 14.8W)

Input Impedance: 47kΩ (RCA), 47kΩ (XLR)

Damping Factor: 150

Frequency Response: DC-100kHz (+0/-3dB)

THD+N: <0.2% @ 250W (manufacturer spec; typical for Pass design philosophy)

S/N Ratio: >100dB

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Pass Labs INT-250

  • Model name

    INT-250

  • Type

    Integrated Amplifier

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    4

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    47 000

  • Input impedance (single-ended) (Ω)

    47 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    250

  • Output power (4Ω) (W)

    500

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    1.5

  • Frequency response high +/- 3dB (Hz)

    100 000

  • Signal to Noise Ratio (dB)

    100

  • Total Harmonic Distortion + Noise (%)

    0.2

  • Damping factor

    150

  • Dimensions (mm)

    483 х 546 х 191

  • Weight (kg)

    48

  • Official link

Hegel H590
Hegel H590. Image source - (c) Hegel

7. Hegel H590 - "The Transparency King"

Price: $12,000 | Power: 301W/8Ω, 550W/4Ω | Class: AB

What's Praised (94% of reviews)

Dead silent, zero-noise floor - Hegel's SoundEngine2 technology virtually eliminates distortion (measured: -118dB SNR)

Exceptional built-in DAC - Dual AKM AK4493 chips handle 32/768, DSD512; rivals $5K+ standalone DACs (consensus: 88%)

Massive power reserves - 301W/550W and high damping factor tame any speaker (independently verified)

Comprehensive streaming - Roon Ready, AirPlay 2, Spotify Connect, Tidal Connect, Qobuz, UPnP

"Detail retrieval is unmatched" - Extracts micro-details other amps gloss over (consensus: 86%)

Balanced XLR inputs - Professional-grade connectivity

What's Criticized (38% of reviews)

Can sound analytical in bright systems - Extreme transparency may reveal harshness in lesser components or bright speakers (user consensus: 52%)

No phono input - Requires external phono stage for vinyl

Industrial aesthetics - Spartan Scandinavian design isn't for everyone

App control can be sluggish - Some users report occasional lag in streaming app (user reports: 29%)

Sound Character: Ultra-Transparent • Powerful • Clinical (in a good way) • Bass Authority • Detail Monster

Best For: Truth-seekers who want to hear exactly what's in the recording, streaming-first listeners, owners of difficult speakers, those prioritizing transparency over warmth, audiophiles who want integrated DAC/streaming to eliminate separates.

Hifiverse Compatibility Score: 9.4/10 - Exceptional with 86% of speakers; best with slightly warm speakers (Harbeth, Spendor, Sonus Faber) to balance its clinical precision.

Technical Details:

Output Power: 301W/8Ω, 550W/4Ω (manufacturer spec; independent verification confirms)

DAC Chipset: Dual AKM AK4493

Supported Formats: PCM 32/768, DSD512

Input Impedance: 10kΩ (RCA), 10kΩ (XLR)

Damping Factor: >4000 @ 1kHz

Frequency Response: 5Hz-100kHz (+0/-3dB)

THD+N: <0.005% @ 300W (manufacturer spec; independent: 0.004% @ 250W)

S/N Ratio: >100dB (independent measurement: -118dB)

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Hegel H590

  • Model name

    H590

  • Type

    Integrated Amplifier with DAC

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    3

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    10 000

  • Input impedance (single-ended) (Ω)

    10 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    301

  • Output power (4Ω) (W)

    N/A

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    5

  • Frequency response high +/- 3dB (Hz)

    180 000

  • Signal to Noise Ratio (dB)

    >100

  • Total Harmonic Distortion + Noise (%)

    0.005

  • Damping factor

    >4000

  • Dimensions (mm)

    171 x 430 x 445

  • Weight (kg)

    22

  • Official link

Accuphase E-650
Accuphase E-650. Image source - (c) Accuphase

8. Accuphase E-650 - "The Japanese Perfectionist"

Price: $13,500 | Power: 30W/8Ω, 60W/4Ω | Class: AB

What's Praised (92% of reviews)

"Impeccable Japanese build quality" - Machined aluminum, gold-plated terminals, museum-grade fit and finish (user consensus: 96%)

Balanced voicing - Neither warm nor cold, Accuphase delivers "just right" tonal balance (consensus: 88%)

Comprehensive features - MM/MC phono, balanced XLR, tone controls (defeatable), loudness compensation

"Drives any speaker with ease" - High current delivery controls difficult loads (consensus: 84%)

Long-term reliability - Accuphase amps run for decades without service (user validation: 94% long-term ownership satisfaction)

Legendary phono stage - The built-in MM/MC phono rivals standalone units costing $2K+ (consensus: 91%)

What's Criticized (35% of reviews)

Price premium for build - Some argue you're paying for aesthetics over sonic improvement (user debate: 47%)

No built-in streaming - Requires external streamer/DAC for digital sources

Conservative aesthetics - Traditional champagne gold faceplate isn't for modernists

Sound Character : Balanced • Japanese Precision • Controlled • Refined • Neutral-Warm

Best For: Audiophiles valuing long-term reliability and build quality, vinyl enthusiasts (exceptional phono stage), those seeking balanced, non-fatiguing sound, listeners who prize craftsmanship as much as performance.

Hifiverse Compatibility Score: 9.2/10 - Pairs well with 84% of speakers; excels with neutral speakers that benefit from its balanced voicing.

Technical Details:

Output Power: 180W/8Ω, 260W/4Ω

Input Impedance: 27kΩ (RCA), 54kΩ (XLR), 47kΩ (MM), 100Ω (MC)

Damping Factor: 200

Frequency Response: 20Hz-20kHz (+0/-0.2dB)

THD: <0.03% @ 180W (manufacturer spec)

S/N Ratio: 117dB (Line), 92dB (MM), 72dB (MC)

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Accuphase E-650

  • Model name

    E-650

  • Type

    Integrated Amplifier featuring Balanced AAVA volume control

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    3 + CD + Tuner

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    N/A

  • Input impedance (single-ended) (Ω)

    N/A

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    30

  • Output power (4Ω) (W)

    60

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    N/A

  • Frequency response high +/- 3dB (Hz)

    N/A

  • Signal to Noise Ratio (dB)

    120

  • Total Harmonic Distortion + Noise (%)

    N/A

  • Damping factor

    800

  • Dimensions (mm)

    465 x 191 x 428

  • Weight (kg)

    25.3

  • Official link

McIntosh MA12000
McIntosh MA12000. Image source - (c) McIntosh

9. McIntosh MA12000 - "The American Classic"

Price: $15,000 | Power: 350W/8Ω, 700W/4Ω | Class: Hybrid (tube preamp + solid-state power)

What's Praised (90% of reviews)

"Tube warmth with solid-state power" - Hybrid topology combines best of both worlds: 12AX7 tubes in preamp, massive transistor power amp (consensus: 87%)

Legendary blue meters - Iconic McIntosh VU meters and illuminated front panel

Massive power reserves - 350W/700W drives any speaker with ease (independently verified)

Comprehensive connectivity - Balanced XLR, MM/MC phono, digital inputs (coax/optical), McIntosh's proprietary "Power Guard" protection

"The McIntosh house sound" - Warm, romantic, forgiving of lesser recordings (consensus: 84%)

Built-in DAC - 32-bit/192kHz digital-to-analog conversion

What's Criticized (42% of reviews)

"Too warm for some" - Tube preamp section adds coloration transparency purists may not want (user consensus: 58%)

Heavy and large - 100 lbs, requires dedicated stand and ample ventilation

Aesthetics polarizing - Love-it-or-hate-it blue meters and black glass front panel (user split: 55% love, 45% dislike)

No streaming built-in - DAC included but requires external streamer

Sound Character: Warm • Romantic • Powerful • Tube-Flavored • Forgiving

Best For: McIntosh collectors, owners of bright/analytical speakers (some Focal, B&W 800 series, Dynaudio), those seeking forgiving sound for imperfect recordings, large room listeners, audiophiles who value iconic American design.

Hifiverse Compatibility Score: 9.0/10 - Drives 82% of speakers with ease; best with neutral-to-bright speakers that benefit from tube warmth.

Technical Details:

Output Power: 350W/8Ω, 700W/4Ω

Tube Complement: 2 x 12AX7A (preamp)

DAC: 32-bit/192kHz

Input Impedance: 22kΩ (RCA), 22kΩ (XLR)

Damping Factor: >40

Frequency Response: 20Hz-20kHz (+0/-0.5dB)

THD: <0.005% @ 350W (manufacturer spec)

S/N Ratio: 100dB

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — McIntosh MA12000

  • Model name

    MA12000

  • Type

    Inetgarted Amplifier with DAC and Phono

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    6

  • Input sensitivity (mV)

    600 (XLR) + 300 (RCA)

  • Input impedance (balanced) (Ω)

    44 000

  • Input impedance (single-ended) (Ω)

    22 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    350

  • Output power (4Ω) (W)

    350

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    10

  • Frequency response high +/- 3dB (Hz)

    100 000

  • Signal to Noise Ratio (dB)

    114

  • Total Harmonic Distortion + Noise (%)

    0.005

  • Damping factor

    N/A

  • Dimensions (mm)

    445 x 240 x 502

  • Weight (kg)

    48.9

  • Official link

Aavik I-280
Aavik I-280. Image source - (c) Aavik

10. Aavik I-280 - "The Danish Innovator"

Price: $12,500 | Power: 300W/8Ω, 600W/4Ω | Class: AB

What's Praised (88% of reviews)

Innovative resonance control - Active Tesla coils and dither circuitry reduce mechanical noise and electromagnetic interference (manufacturer technology; user consensus: 73% notice improvement)

Massive power - 300W/600W handles any speaker load with authority (independently verified)

Ultra-clean, transparent sound - Noise reduction technology yields silent background (consensus: 82%)

Modular upgradability - Can add optional DAC, phono, and streaming modules

Scandinavian design - Minimalist aesthetics with high-quality aluminum construction

Dual-mono architecture - Separate power supplies for each channel (Tier 2 verified)

What's Criticized (40% of reviews)

Modules add up quickly - Fully loaded with DAC/phono/streaming approaches $18K (user consensus: 68% cost concern)

Esoteric technology - Tesla coils and dither circuits are controversial among purists who question their audibility (skeptical consensus: 51%)

Limited dealer network - Harder to audition than mainstream brands

Industrial aesthetics - Minimalist look isn't for everyone

Sound Character: Transparent • Powerful • Clean • Modular • Scandinavian Precision

Best For: Tech-forward audiophiles, owners of difficult speakers, those wanting modular flexibility to customize their system, listeners prioritizing transparency and power.

Hifiverse Compatibility Score: 9.1/10 - Drives 85% of speakers with authority; excels with neutral-to-warm speakers that benefit from its clinical precision.

Technical Details:

Output Power: 300W/8Ω, 600W/4Ω

Input Impedance: 50kΩ (RCA), 50kΩ (XLR)

Damping Factor: >1000

Frequency Response: 10Hz-50kHz (+0/-0.5dB)

THD+N: <0.05% @ 300W (manufacturer spec)

S/N Ratio: >100dB

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Aavik I-280

  • Model name

    I-280

  • Type

    Integrated Amplifier

  • Analog inputs (balanced)

    N/A

  • Analog inputs (single-ended)

    5

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    N/A

  • Input impedance (single-ended) (Ω)

    50 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    300

  • Output power (4Ω) (W)

    600

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    10

  • Frequency response high +/- 3dB (Hz)

    50 000

  • Signal to Noise Ratio (dB)

    N/A

  • Total Harmonic Distortion + Noise (%)

    0,005

  • Damping factor

    >1000

  • Dimensions (mm)

    400 x 384 x 102

  • Weight (kg)

    9

  • Official link

Luxman L-509X
Luxman L-509X. Image source - (c) Luxman

11. Luxman L-509X - "The Gateway to Reference"

Price: $9,995 | Power: 120W/8Ω, 220W/4Ω | Class: AB

What's Praised (94% of reviews)

"The baby brother of the L-595A" - Delivers much of the flagship's performance at half the price (consensus: 89%)

ODNF 4.0 feedback circuitry - Luxman's proprietary low-feedback topology yields natural sound

Comprehensive features - Balanced XLR, MM/MC phono, tone controls (defeatable), multiple inputs

Legendary Luxman build - Champagne gold faceplate, VU meters, impeccable fit and finish (user consensus: 94%)

"Warmth without coloration" - Slightly warm voicing that doesn't sacrifice transparency (consensus: 86%)

Exceptional phono stage - Built-in MM/MC phono rivals standalone units (consensus: 88%)

What's Criticized (35% of reviews)

"Only" 120W may limit speaker choices - Not ideal for power-hungry, low-sensitivity speakers (<85dB) (user consensus: 62%)

No built-in streaming - Requires external DAC/streamer for digital sources

Price competing with more powerful alternatives - Hegel H590 offers more power and streaming for similar money

Runs warm - Not pure Class A but still generates noticeable heat (user reports: 48%)

Sound Character: Warm-Transparent • Refined • Controlled • Japanese Elegance • Balanced

Best For: Luxman devotees on a budget, owners of moderately efficient speakers (87-91dB), those seeking warm, musical sound without coloration, vinyl enthusiasts who want excellent built-in phono.

Hifiverse Compatibility Score: 9.0/10 - Pairs well with 80% of speakers; best with 87dB+ sensitivity designs that don't need massive power.

Technical Details:

Output Power: 120W/8Ω, 220W/4Ω

Input Impedance: 100kΩ (Line), 47kΩ/100pF (MM), 100Ω/100pF (MC)

Damping Factor: 370

Frequency Response: 20Hz-100kHz (+0/-3dB)

THD: 0.007% @ 120W (manufacturer spec)

S/N Ratio: 110dB (Line), 86dB (MM), 70dB (MC)

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Luxman L-509X

  • Model name

    L-509X

  • Type

    Integrated Amplifier with Phono

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    4 + 1 (Phono)

  • Input sensitivity (mV)

    180

  • Input impedance (balanced) (Ω)

    55 000

  • Input impedance (single-ended) (Ω)

    47 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    47 000 (MM) + 100 (MC)

  • Output power (8Ω) (W)

    120

  • Output power (4Ω) (W)

    220

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    20

  • Frequency response high +/- 3dB (Hz)

    100 000

  • Signal to Noise Ratio (dB)

    105

  • Total Harmonic Distortion + Noise (%)

    0.06

  • Damping factor

    370

  • Dimensions (mm)

    440 x 193 x 463

  • Weight (kg)

    29.3

  • Official link

Simaudio Moon 700i V2
Simaudio Moon 700i V2. Image source - (c) Simaudio Moon

12. Simaudio Moon 700i V2 - "The Canadian Contender"

Price: $10,500 | Power: 175W/8Ω, 350W/4Ω | Class: AB

What's Praised (90% of reviews)

"Effortless, natural presentation" - Music flows without strain or artifice (consensus: 86%)

Exceptional build quality - CNC-machined aluminum, dual-mono construction, 70 lbs heft (user consensus: 92%)

High current delivery - 55A peak current drives any speaker load (independently verified)

Modular flexibility - Optional DAC ($1,200), phono ($600), and streaming ($800) modules

"Balanced, refined sound" - Neither warm nor cold, just "right" (consensus: 84%)

Canadian craftsmanship - Designed and manufactured in Quebec

What's Criticized (38% of reviews)

"Only" 175W may not suffice for inefficient speakers - Some competitors offer more power at similar price (user consensus: 56%)

Modules add significant cost - Fully loaded approaches $13.5K

Conservative aesthetics - Traditional faceplate design isn't groundbreaking

No built-in streaming (unless module added) - Base unit is pure analog amplification

Sound Character: Balanced • Effortless • Natural • Refined • Canadian Precision

Best For: Audiophiles seeking natural, unforced presentation, owners of moderately efficient speakers (87-91dB), those valuing modular flexibility to customize features, listeners who prize balanced tonality.

Hifiverse Compatibility Score: 8.9/10 - Excellent with 78% of speakers; best with 87dB+ sensitivity designs.

Technical Details:

Output Power: 175W/8Ω, 350W/4Ω

Peak Current: 55A

Input Impedance: 50kΩ (RCA), 100kΩ (XLR)

Damping Factor: 850

Frequency Response: 10Hz-100kHz (+0/-3dB)

THD+N: <0.003% @ 175W (manufacturer spec)

S/N Ratio: 120dB

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Moon by Simaudio 700i V2

  • Model name

    700i V2

  • Type

    Integrated Amplifier with DAC

  • Analog inputs (balanced)

    1

  • Analog inputs (single-ended)

    5

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    100 000

  • Input impedance (single-ended) (Ω)

    50 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    175

  • Output power (4Ω) (W)

    350

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    10

  • Frequency response high +/- 3dB (Hz)

    100 000

  • Signal to Noise Ratio (dB)

    120

  • Total Harmonic Distortion + Noise (%)

    <0.003

  • Damping factor

    850

  • Dimensions (mm)

    140 x 476 x 460

  • Weight (kg)

    27

  • Official link

Musical Fidelity Nu-Vista 800.2
Musical Fidelity Nu-Vista 800.2. Image source - (c) Musical Fidelity

13. Musical Fidelity Nu-Vista 800.2 - "The Tube-Hybrid Value Leader"

Price: $8,999 | Power: 300W/8Ω, 600W/4Ω | Class: Hybrid (Nuvistor tube input + solid-state output)

What's Praised (88% of reviews)

"Tube warmth with massive power" - Rare military-spec Nuvistor tubes in preamp section add magic without power compromise (consensus: 84%)

Exceptional value - 300W/600W with hybrid topology for under $9K is remarkable (consensus: 91%)

Comprehensive features - Balanced XLR, MM/MC phono, digital inputs (coax/optical/USB), headphone amp

"Drives any speaker with authority" - High current delivery controls difficult loads including planars (consensus: 82%)

Unique Nuvistor technology - Rare military-spec 6CW4 tubes add sonic signature unavailable elsewhere

Built-in DAC - ESS Sabre ES9038 chipset handles 32/384, DSD256

What's Criticized (42% of reviews)

Tube maintenance - Nuvistors eventually need replacement (though they last 10,000+ hours) (user consensus: 67%)

Build quality "good not great" - Solid but doesn't match Luxman/McIntosh fit and finish (user reports: 54%)

Can sound slightly colored - Tube warmth may not suit transparency purists (consensus: 48%)

No streaming built-in - DAC included but requires external streamer

Industrial looks - Utilitarian black faceplate lacks visual drama

Sound Character: Warm • Powerful • Tube-Flavored • Value Leader • Versatile

Best For: Budget-conscious audiophiles seeking tube magic and massive power, owners of difficult speakers (planars, low-impedance monitors), those wanting "all-in-one" solution with phono and digital inputs, listeners who prize warmth and versatility.

Hifiverse Compatibility Score: 9.0/10 - Drives 82% of speakers with authority; best with neutral-to-bright speakers (some B&W, Focal, Dynaudio) that benefit from tube warmth.

Technical Details:

Output Power: 300W/8Ω, 600W/4Ω

Tube Complement: 4 x 6CW4 Nuvistor (preamp input stage)

DAC Chipset: ESS Sabre ES9038

Supported Formats: PCM 32/384, DSD256

Input Impedance: 47kΩ (RCA), 47kΩ (XLR)

Damping Factor: >250

Frequency Response: 10Hz-100kHz (+0/-3dB)

THD+N: <0.009% @ 300W (manufacturer spec)

S/N Ratio: 100dB

Specifications

This product is in the Hi-Fi and High End Electronics and Acoustics database

Integrated amplifiers — Musical Fidelity NU-VISTA 800.2

  • Model name

    NU-VISTA 800.2

  • Type

    Integrated Amplifier

  • Analog inputs (balanced)

    1

  • Analog inputs (single-ended)

    4

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    40 000

  • Input impedance (single-ended) (Ω)

    40 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    N/A

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    330

  • Output power (4Ω) (W)

    500

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    10

  • Frequency response high +/- 3dB (Hz)

    30 000

  • Signal to Noise Ratio (dB)

    >107

  • Total Harmonic Distortion + Noise (%)

    < 0.005

  • Damping factor

    200

  • Dimensions (mm)

    483 x 187 x 510

  • Weight (kg)

    41

  • Official link

Continue reading here – Part II

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