Up for bids is a Yamaha A 720 amplifier. This looks good and was tested as working on all inputs inc. phono. I left it for a couple of weeks and it was a bit of a slow start but worked well again. Additionally the back has to have jumpers as pictured or there will be no output from the amplifier. RCA plugs seem to work fine. Any ??? [lease ask and thanks for looking. (SPECS below) Shipping is calculated to your location, I add $ 2.99 for materials and handling SpecificationsCountry: Japan Manufacturer / Brand: Yamaha Co.; Hamamatsu alternative name Nippon Gakki Year: 1985/1986 Category: Audio Amplifier or -mixer Semiconductors (the count is only for transistors) Semiconductors present. Reception principle Audio-Amplification Wave bands - without Details Power type and voltage Alternating Current supply (AC) / 220 Volt Loudspeaker - This model requires external speaker(s). Power out 300 W (unknown quality) Model: A-720 - Yamaha Co.; Hamamatsu Material Metal case Shape Book-shelf unit. Dimensions (WHD) 435 x 147 x 399 mm / 17.1 x 5.8 x 15.7 inch Notes HiFi Amplifier2x105 watts into 8 ohms2 x 150 W into 4 ohms DINfractionated pre-amplifierPhono switch MM / MCPower output: 105 watts per channel into 8? (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.005% Damping factor: 45 Input sensitivity: 0.16mV (MC), 2.5mV (MM), 150mV (line) Signal to noise ratio: 76dB (MC), 92dB (MM), 106dB (line) Channel separation: 70dB (MM), 65dB (line) Output: 150mV (line)