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Power amplifiers mono — Krell KMA I800
Description, images, technical data and specifications
Krell KMA I800
Image source — © Krell
The KMA I800 is a formidable monoblock power amplifier from Krell, a well-established American manufacturer known for uncompromising, current-delivery-focused high-end electronics, built with a remarkably low output impedance and extraordinary damping factor. The KMA I800 represents Krell's most ambitious current statement in monoblock power amplifier engineering.
Key specs that matter
Input impedance is a substantial 100,000 ohms balanced or 50,000 ohms single-ended. Output impedance is a remarkably low under 0.05 ohms on both connections. Output power is a substantial 800W into 8 ohms, rising to a staggering 1,600W into 4 ohms. Gain is 26.5dBu. Frequency response spans a wide 10Hz to 100,000Hz within plus-or-minus 3dB. Signal-to-noise ratio exceeds 110dB, with total harmonic distortion plus noise under 0.05% at 100% global feedback. Maximum power consumption is a substantial 3,000W. Damping factor exceeds an extraordinary 400. At 483 x 229 x 533mm and 54.4kg, the KMA I800 represents Krell's absolute current flagship monoblock engineering ambition.
Sound and use context
Expect extraordinary dynamic authority reflecting the extraordinary over-400 damping factor combined with the staggering 1,600W-into-4-ohms output, representing Krell's most accomplished current monoblock engineering.
Pairing
As a monoblock, two units are needed for a stereo pair, and the extraordinary over-400 damping factor handles the most demanding loudspeaker loads.
Alternatives
Krell's own Solo 375 XD offers a more accessible monoblock alternative within the same broader catalogue.
Key specs that matter
Input impedance is a substantial 100,000 ohms balanced or 50,000 ohms single-ended. Output impedance is a remarkably low under 0.05 ohms on both connections. Output power is a substantial 800W into 8 ohms, rising to a staggering 1,600W into 4 ohms. Gain is 26.5dBu. Frequency response spans a wide 10Hz to 100,000Hz within plus-or-minus 3dB. Signal-to-noise ratio exceeds 110dB, with total harmonic distortion plus noise under 0.05% at 100% global feedback. Maximum power consumption is a substantial 3,000W. Damping factor exceeds an extraordinary 400. At 483 x 229 x 533mm and 54.4kg, the KMA I800 represents Krell's absolute current flagship monoblock engineering ambition.
Sound and use context
Expect extraordinary dynamic authority reflecting the extraordinary over-400 damping factor combined with the staggering 1,600W-into-4-ohms output, representing Krell's most accomplished current monoblock engineering.
Pairing
As a monoblock, two units are needed for a stereo pair, and the extraordinary over-400 damping factor handles the most demanding loudspeaker loads.
Alternatives
Krell's own Solo 375 XD offers a more accessible monoblock alternative within the same broader catalogue.
Specifications
Model name
KMA I800
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
100 000
Input impedance (single-ended) (Ω)
50 000
Output impedance (balanced) (Ω)
<0.05
Output impedance (single-ended) (Ω)
<0.05
Max current (A)
N/A
Output power (8Ω) (W)
800
Output power (4Ω) (W)
1600
Gain (dBu)
26.5
Frequency response low +/- 3dB (Hz)
10
Frequency response high +/- 3dB (Hz)
100 000
Signal to Noise Ratio (dB)
>110
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
<0.05
Max power consumption (W)
3000
Damping factor
>400
Dimensions (mm)
483 x 229 x 533
Weight (kg)
54.4
Official link
More components
Power amplifiers mono
Krell Solo 375 XD