Top-8 Integrated Amplifiers – September 2025 Rating

As usual, in the fall - there is a flurry of new audio equipment on the market. Choosing an integrated amplifier, the heart of any audio system, is not very easy in such a situation - your eyes run wide, Therefore, we have compiled for you an expert rating of the most important for the industry and excellent-sounding amplifiers in almost all price categories - meet the editorial hit parade.

8. Pro-Ject Uni Box S3

Pros - a combine with decent sound

The Pro-Ject Uni Box S3 integrated amplifier uses a network streaming platform based on WiiM OS and a built-in Cirrus Logic CS4344 DAC (24 bit / 192 kHz); as a result, with a lot of built-in streaming clients and Bluetooth with support for AAC and SBC codecs, the model seems like a real "Swiss knife" for sound. The power of 40 W per channel at 4 Ohms and 23 at 8 Ohms is not too high – so it is better to use simple acoustics with the component – in this case the sound of the model turns out to be very impressive. The output stages of the Pro-Ject Uni Box S3 use Texas Instrument TPA3221DDV microcircuits.

7. NAD C3050

Pros – HybridDigital UcD amplification works effectively

NAD C3050 develops a power of 2 x 100 W (8 Ohms) – thanks to the latest D-class HybridDigital UcD amplification modules. The digital nature in the sound is almost imperceptible – the device offers a fluid and very fast sound with excellent resolution for its group. Of course, there is a DAC on board based on the proven PCM5242 chip, a Bluetooth module, and it is also possible to expand the functionality by installing a streaming module based on BluOS-D with a lot of built-in streaming clients and a Dirac Live room corrector.

6. Fezz Audio Torus 5060

Pros – rich and dynamic sound

Fezz Audio Torus 5060 guarantees up to 2 h 90 W of power and confidently works with a complex load – providing clear and harmonious sound with a wide range of shades and micro-nuances. In addition to traditional signal amplification, the built-in DAC, Bluetooth 5.0 transmitter compatible with MQA and phono preamplifier are not forgotten here.

5. Michi X3 Series 2

Pros – exceptionally dense and confident feed

Michi X3 Series 2 “with one hand” controls even very complex loudspeakers – guaranteeing thunderous bass and truly the highest resolution across the entire frequency band. The damping factor of the amplifier reaches 350 units, the power supply uses a toroidal power transformer of our own production with a huge power reserve. The model develops up to 2 x 350 W in class AB on 4-ohm speakers, is equipped with an 8-channel ESS ES9028PR DAC, decodes MQA and supports Bluetooth with the aptX-HD codec.

4. Luxman L550AXII

Pros - very beautiful sound, excellent scene rendering

Luxman L550AXII will offer only 2 x 20 W (8 Ohm) or 2 x 40 W (4 Ohm), but in pure class A - it is worth fighting for this and choosing the right speakers. In this case, the device will literally amaze you with the beauty of the sound. Among other features of the Japanese amplifier, it is worth noting the discrete volume attenuator LECUA1000 with electronic control Luxman Electric Controlled Ultimate Attenuator - a truly precision device. And, of course, the fourth version of the proprietary ODNF (Only Distortion Negative Feedback) technology, which uses negative feedback to eliminate noise.

3. Accuphase E-650

Pros - a scattering of details, ideal dynamic characteristics

Accuphase E-650 is an integrated amplifier operating in class A and offering power up to 2 x 30 W at 4 Ohms and 2 x 60 W at 8 Ohms (with an increase to 150 W at 1 Ohm). The device literally amazes with the number of details and builds a tangible holographic scene. The volume control of the AAVA type (with a high-rigidity sensor made of a solid aluminum block with a brass shaft) and the amplification stage with bipolar MOS-FET transistors in a dual parallel push-pull configuration, a fantastic damping factor of 800 units for such a system - everything is good here.

2. Moon by Simaudio 641

Pros – huge stage, great bass

Moon by Simaudio 641 literally opens up the stage in front of you and expands the boundaries of the listening room. The model uses a new MDCA (MOON Distortion-Cancelling Amplifier with independent signal correction circuit) design with proprietary MOON transistors and a full dual mono configuration. The result? 2 x 135 W at 8 Ohms and 2 x 250 W at 4 Ohms of pure power.

1. Aavik I-288

Pros – phenomenal acoustic control, brilliance and fireworks of details

Aavik I-288 offers the developments of the reference model I-880 for a lower price. The amplifier reaches 2 x 300 W (8 Ohms), 2 x 600 W (4 Ohms), uses the patented UMAC circuitry and the ultra-quiet Resonant Mode power supply, and operates 72 regular and 168 square Tesla coils. Distortion (THD+N) is at a record low level (<0.0028%) across the entire frequency range, and the sound is more reminiscent of a live performance of musicians in front of you.