.Produced around 1982-1983.Pioneer SG-530 Stereo Graphic Equalizer .Output Level; 1V (6V max).Gain; +/- 0 dB.Frequency response: 5 Hz to 70 kHz.Signal to Noise Ratio: 100dB.Total harmonic distortion: 0.005%.Control Range: +/- 10 dB.Frequency Bands: 60, 150, 400, 1K, 2.4K, 6K, 15KHz.Dimensions 420 X 97 X 216mm.Weight 2.80 Kilograms.Made in JapanOthers.Good conditions.Detail in 1 Slider