Soundcraftsmen RP2215-R equalizer / unity gain comparatorThis model has had all electrolytic capacitors replaced with quality Nichicon audio capacitors. (see last photo for old parts)Sliders all slide and were cleaned with face-plate removedUnity-gain lights balance setThis model is top quality EQ with hand-wound and tuned inductive coils in the EQ filter circuits. Most EQs use integrated circuits to mimic a coil. The real thing sounds better and cost more when new than lower models that didn\'t have them.From original Soundcraftsmen brochure: 1978
The Soundcraftsmen RP2215-R is the finest octave-wide graphic stereo equalizer available today. Our eight year journey into equalizer technology has given us specs like 114dB signal-to-noise and distortion of 0.01%. The wire-wound coil circuitry allows this through a front panel button. You can also monitor the tape recorded signal with the provided \"tape monitor\" button.Frequency response: +/- 1/4dB 5hz-100khz

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