Designed by Tim DeParavicini, the QUAD II-Eighty takes inspiration from the original QUAD II amplifier. It is an 80-Watt mono power amplifier following in the tradition and philosophies of Peter Walker. The output section consists of 4 KT88 valves running as two pairs in push-pull with the hallmark QUAD topology of partial cathode loading in the output transformer. Specification Input Sensitivity (nominal)1V RMS for full outputPower Output80W RMSOutput Impedance4 Ohms or 8 Ohms, selectableTHD @ 80 Watts2 x EF860.5% – 30Hz – 15kHz1.0% – 20 – 20kHzResidual Hum and NoiseBetter than -94dBFrequency Response10Hz – 30kHz ( 0dB, -0.5dB)3Hz – 50kHz (-3dB)Damping Factor16 @ 1kHz (referred to 8 Ohms)Power Consumption240VA maximumValves2 x 6SL71 x 6SN74 x KT88
