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Power amplifiers stereo — Accustic Arts AMP IV
Description, images, technical data and specifications
Accustic Arts AMP IV
Image source — © Accustic Arts
The AMP IV is a stereo power amplifier from Accustic Arts, sharing chassis dimensions with the brand's MONO IV monoblock while delivering both channels of amplification, built with efficient power consumption. The AMP IV brings Accustic Arts' considered engineering to a two-channel power amplification format.
Key specs that matter
Input impedance is 16k ohms balanced or 15k ohms single-ended. Output power is 400W into 8 ohms, rising to 620W into 4 ohms. Gain is 25dBu. Frequency response spans a wide 10Hz to 50,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 103dB, with total harmonic distortion plus noise at 0.003% and maximum power consumption at an efficient 120W. At 340 x 470 x 440mm and 44kg, the AMP IV shares chassis dimensions with the MONO IV.
Sound and use context
Expect substantial stereo power delivery combined with the strong 103dB signal-to-noise figure, consistent with Accustic Arts' considered German engineering approach applied to a two-channel format.
Pairing
The substantial 400/620W output suits a wide range of loudspeaker sensitivities and impedances.
Alternatives
Accustic Arts' own AMP VI sits above this model with considerably greater output, worth comparing directly to find the right Accustic Arts stereo amplifier tier.
Key specs that matter
Input impedance is 16k ohms balanced or 15k ohms single-ended. Output power is 400W into 8 ohms, rising to 620W into 4 ohms. Gain is 25dBu. Frequency response spans a wide 10Hz to 50,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 103dB, with total harmonic distortion plus noise at 0.003% and maximum power consumption at an efficient 120W. At 340 x 470 x 440mm and 44kg, the AMP IV shares chassis dimensions with the MONO IV.
Sound and use context
Expect substantial stereo power delivery combined with the strong 103dB signal-to-noise figure, consistent with Accustic Arts' considered German engineering approach applied to a two-channel format.
Pairing
The substantial 400/620W output suits a wide range of loudspeaker sensitivities and impedances.
Alternatives
Accustic Arts' own AMP VI sits above this model with considerably greater output, worth comparing directly to find the right Accustic Arts stereo amplifier tier.
Specifications
Model name
AMP IV
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
16 000
Input impedance (single-ended) (Ω)
15 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
400
Output power (4Ω) (W)
620
Gain (dBu)
25
Frequency response low +/- 3dB (Hz)
10
Frequency response high +/- 3dB (Hz)
50 000
Signal to Noise Ratio (dB)
103
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
0.003
Max power consumption (W)
120
Damping factor
N/A
Dimensions (mm)
340 x 470 x 440
Weight (kg)
44
Official link
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