Working, excellent sound. See all pictures for detail physical. Description Trust Pioneer to make your shopping for a stereo receiver as easy as one-two-three. One: First, determine the amount of power output you need. Your Pioneer dealer can help with this. If your listening room is of average size, chances are that the Pioneer SX-650 will be just right. It delivers a continuous power output of 35 watts per channel, min RMS at 8 ohms, from 20 to 20,000 Hertz, with no more than 0.3% total harmonic distortion. Two: Be honest with yourself about the kind of preamplifier control versatility you really need. The Pioneer SX-650 has click-stop tone controls with center-defeat positions, a high filter, tape-to-tape dubbing and more. But it saves you money by leaving the frills to more expensive units, concentrating Instead on real preamp performance - such as including a super-quiet phono equalizer with +- 0.3dB RIAA precision and a big 200mV overload for wide dynamic range. Three: Evaluate your AM/FM needs. Note that the Pioneer SX-650 has high FM sensitivity and selectivity, PLL multiplex for superb stereo separation, and a special IC for AM to more than satisfy your requirements. Trust Pioneer to deliver what you need and then some - one-two-three in the SX-650. Specifications Tuning range: FM, MW Power output: 35 watts per channel into 8Ω (stereo) Frequency response: 10Hz to 50kHz Total harmonic distortion: 0.3% Damping factor: 30 Input sensitivity: 7mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line) Signal to noise ratio: 70dB (MM), 90dB (line) Output: 150mV (line), 30mV (DIN) Speaker load impedance: 4Ω (minimum) Semiconductors: 1 x FET, 9 x IC, 21 x transistors, 29 x diodes Dimensions: 480 x 149 x 371mm Weight: 13.1kg Year: 1976