QA class amplifier



Output RMS power (1kHz, 1% THD) 180W/8 Ohm, 360W/4 Ohm, first 30W/8 Ohm, 60W/4 Ohm in A Class
Input sensivity 1,2Vrms
Bandwidth 7Hz ÷ 125kHz (-3dB, 1W)
SNR above 108dB
THD 0,017%
Input impendency (RCA) 30kOhm
Gain: 29dB
Power supply AC (50÷60Hz) 220V÷230V
Power consumption – operational: min 300W (max 1600W)
– stand-by mode: <3W
Size (W x H x D) 540 mm x 225 mm x 540 mm
Weight 46 kg


  • First 30W/8 Ohm in A Class
  • Innovative solution BQVA – complementary Bi-Quartet design as the basis of operation
  • ULHD (Ultra Linear High Damping) topology provides very high damping factor
  • No Global feedback
  • Powerful output stage based on Sanken transistors
  • Unique current compensation circuit topology
  • Ultra low noise massive toroidal transformer rated to 1600 VA
  • 220 000 uF Power supply capacitors
  • Galvanic separation between analog and digital control circuits
  • Microprocessor controlled smart protection system