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|The Quad II is a monoblock power amplifier that makes an ideal addition to any ESL speakers. The minimum frequency response on this amplifier is 10 Hz and the maximum frequency response is 20 kHz, +/- 2 dB. Additional features on this Quad power amplifier include a total harmonic distortion of 0.8 percent at 12 watts/700 Hz, and residual hum and noise better than -90 dB. Moreover, the input sensitivity on the Quad II is 775 millivolts RMS and the power output is 15 watts RMS. Five valves located on this Quad power amplifier include two EF86, two KT66, and one GZ34 valve. Furthermore, this Quad power amplifier offers an output impedance of 8 Ohms and a damping factor of 11.75 at 700 Hz. This monoblock power amplifier measures 33.5 cm in width by 1.2 cm in depth by 1.7 cm in height and weighs 8.3 kg.|