Accustic Arts

Amp IV


Presenting the ACCUSTIC ARTS® AMP IV, an epitome of excellence as a dual-mono reference power amplifier. Indulge in perfection with individual power supplies for each amplifier channel, and revel in the prowess of 20 carefully chosen MOS-FET output transistors.

Experience power reserves galore with two magnetically shielded and encapsulated toroidal core transformers. Boasting an impressive 160,000 µF power supply capacity, along with premium capacitors “Made in Germany,” it promises optimal smoothing and unwavering performance.

Speaker control reaches its pinnacle with an exceptionally high damping factor, further enhanced by ACCUSTIC ARTS® damping factor linearization. Equipped with professional protective circuits, the AMP IV ensures consistent quality by averting clipping, oscillations, and excessive DC offset.

Operational safety is paramount, evidenced by the integrated switch-on current limitation. With generously dimensioned heat sinks, the AMP IV maintains a constant low operating temperature. Balanced (XLR) and unbalanced (RCA) inputs are thoughtfully switchable for convenience.

Crafted with precision, every component and part is selected for quality. Gold-plated bi-wiring/bi-amping speaker terminals and WBT loudspeaker terminals assure superior connectivity. Encased within a stable, resonance-optimized aluminum housing with an inlay of high-gloss polished and chromed brass, the AMP IV is an artistic marvel.

Delve into the pinnacle of audio craftsmanship with the ACCUSTIC ARTS® AMP IV, a testament to sonic finesse, meticulously “Handmade in Germany.”


  • Dual-mono reference power amplifier with completely isolated power supply for each amplifier channel
  • 20 selected MOS-FET output transistors of finest quality
  • 2 magnetically shielded and encapsulated toroidal core transformer of premium quality for highest output reserves
  • Optimum smoothing thanks to more than 160,000 µF power supply capacity; premium quality capacitors (“Made in Germany”)
  • Very high damping factor for perfect speaker control
  • ACCUSTIC ARTS® damping factor linearization (switchable)
  • Professional protective circuit against clipping, HF oscillations and too high DC offset
  • Integrated switch-on current limitation for highest operational safety
  • Constant low operating temperature due to generously dimensioned heat sinks
  • Balanced Input (XLR) and unbalanced input (RCA) – the inputs are switchable
  • All used components and parts are selected and of highest quality
  • Very high quality, gold-plated bi-wiring/bi-amping speaker terminal
  • WBT loudspeaker terminals
  • Extremely stable and resonance optimized, massive aluminium housing; inlay made of massive, high gloss polished and chromed brass
  • ACCUSTIC ARTS® AMP IV is “Handmade in Germany”


Minimum impedance: 2 Ω
Voltage gain: 25.0 dB
Power consumption without load: approx. 120 watts
Power supply capacity: approx. 160,000 µF
Input impedance: balanced (XLR): 2 x 16 kΩ
unbalanced (RCA): 15 kΩ
Rated power output (THD+N = 0,1%): max. 2 x 810 watts on 2 Ω
max. 2 x 620 watts on 4 Ω
max. 2 x 400 watts on 8 Ω
Inputs: 2 x RCA (unbalanced)
2 x XLR (balanced)
Loudspeaker connectors: 4 pair WBT terminals
Crosstalk: 109 db with 1 kHz
Signal to noise ratio: -103 dBA (ref. 6,325 V)
Distortion (THD+N): 0.003 % on 4 Ω load at 1 kHz and 10 watts
Idle current: approx. 300 mA
Frequency response: 10 Hz – 50,000 Hz (+0/-0.5 dB) (at 10 watts on 4 Ω)
Dimensions (H x W x D) 340 x 470 x 440 mm / 13.4 x 18.5 x 17.3 inches
Weight: approx. 44 kg / 97 lbs
+ 12 kg / 27 lbs flight case
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