.Produced around 1990-1992.Yamaha Stereo Graphic Equalizer with Spectrum Analizer.Input Sensitivy: 1V (7V max).Output Level: 1V (7V max).Frequency response: 10Hz to 50Khz.Signal to Noise Ratio 105 dB.Total Harmonic distorsion 0.006%.Control Range: +/- 12dB.Frequency Bands: 30, 60, 120, 240, 480, 1K, 2K, 4K, 8K,16 KHz.Dimensions: 435 X 122 X 271 mm.Weight: 3.5 Kilograms.Made in Japan