Audio amplifier QII-FORTY

The Quad II-forty power amplifier is much more than a tribute to one of the most famous designs in audio - but refined and powerful in the modern sense of the terms. Although the circuit topology has changed a little from the original, significantly better components and a brand new transformer design have been engineered. While still being delicately balanced a fast, crisp and detailed sound is achieved, whilst producing an output current suitable for modern loudspeakers, including our very own ESL. KT-88 output valves work in push-pull configuration, while a choice of 4 Ohm or 8 Ohm taps allow for a wide choice of loudspeaker configurations. Specifications Power Output40W RMS THD @ 700Hz0.3% @ 40W 0.03% at 1W Residual Hum and NoiseBetter than -80dB Frequency Response10Hz - 30kHz (+0dB, -0.5dB) Damping Factor20 @ 700Hz (referred to 8 Ohms) Power Consumption180VA maximum Loudspeaker Taps4 and 8 Ohms Valves2 x 6SH7 Input 2 x KT88 Output 1 x 5U4G Rectifier Input Sensitivity1V RMS