The Pioneer GR-777 is a legendary 10-band stereo graphic equalizer with a built-in spectrum analyzer, produced by Pioneer between 1988 and 1998. It is one of the most sought-after hi-fi equalizers of that time, loved for its iconic dual display and extensive functionality. Key features Digitally controlled analog EQ: Although the equalizer is digitally controlled via buttons or remote control, the audio signal remains fully analog for warm sound quality. Dual Spectrum Analyzer: The device shows the frequency bands for the left and right channels separately on a clear display. Memory features: You can save self-set EQ curves in memory, in addition to the factory preset profiles. Tested and fully operational! Pictures are original of this lot and part of description. There is one small gold knob cover went missing. Please check pictures. This doesn’t affects performance and the knob is still clickable.