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ACCUSTIC ARTS® AMP IV – Reference class power amplifier: our bestseller and world-wide champion in 5th generation

AMP IV highlights

  • 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”

Specifications

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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