ACCUSTIC ARTS® MONO IV – Reference class mono power amplifier

MONO IV highlights

  • Reference class mono power amplifier
  • 20 selected MOS-FET output transistors of finest quality
  • Two magnetically shielded and encapsulated toroidal core transformers of premium quality for highest output reserves
  • Maximum total transformer power: 1200 VA (watts)
  • Optimum smoothing thanks to more than 80,000 µF power supply capacity; Premium quality capacitors (“Made in Germany”)
  • Very high damping factor for perfect speaker control
  • Professional protective circuit against clipping, HF oscillations and too high DC offset
  • Constant low operating temperature due to generously dimensioned heat sinks
  • Balanced input (XLR) and unbalanced input (RCA) – the inputs are switchable on the rear panel
  • WBT loudspeaker terminals
  • All used parts and components are selected and of highest quality Premium quality, gold-plated bi-wiring / bi-amping speaker terminals Mains power switch on the front panel
  • Extremely stable and resonance optimized, massive aluminium housing; inlay made of massive, high gloss polished and chromed brass
  • ACCUSTIC ARTS® MONO IV is guaranteed “Handmade in Germany”


Voltage gain:

30.0 dB

Power supply capacity:

more than 80.000 µF

Input impedance:

balanced (XLR): 2 x 20 kΩ
unsym. (RCA/Cinch): 100 kΩ

Rated power output:

approx. 900 watts on 2 Ω
approx. 760 watts on 4 Ω
max. 510 watts on 8 Ω

Signal to noise ratio:

-96 dBA (ref. 6.325 V)

Intermodulation distortion:

0.007 % with 10 watts on 4 Ω

Distortion (THD+N):

0.004 % on 4 Ω load with 1 kHz and 10 watts

Power consumption:

approx. 120 watts (without load)

Dimensions (H x W x D)

340 x 470 x 440 mm / 13.4 x 18.5 x 17.3 inches


approx. 42 kg / 93 lbs
+ 12 kg / 27 lbs flight case