Pioneer SG-505 7-Band Stereo Graphic Equalizer from the ’70s.
Frequency Bands: 32, 64, 125, 500, 1K, 2K, 4K, 8K, 16KHz
Output Level: 1V (6V max)
Gain: ± 0dB
Frequency response: 5Hz to 70kHz
Signal to Noise Ratio: 90dB
Total harmonic distortion: 0.04%
Control Range: ± 10dB
Semiconductors: 14 x IC, 2 x FET, 12 x transistors, 13 x diodes
Dimensions: 420 x 150 x 341mm
Weight: 6.9kg