Accustic Arts Amp IV

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 2 x XLR (balanced) 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 Media hifi+ TUBE PREAMP V AMP IV READ MORE hi-fi+ Awards 2025 AMP IV READ MORE Test review hi-fi+ Issue 238 READ MORE