Boss GE-215 15-Band Graphic Equalizer

The GE-215 is a 15-band graphic equalizer with 2 channels. The 19‘’ rack unit was introduced in 1990.

Each of the 15 bands can be adjusted by +/- 15 dB, with the maximum adjustment range reduced to +/- 6 dB. The device has a high-pass filter that cuts off frequencies below 40 Hz with 18 dB / octave. The input/level switch has +4 dBm/-10 dBm, the input impedance is 100 kOhm, the output level is +4 dBm (+20 dBm max)/-10 dBm (+6 dBm max), 600 ohms output impedance, a residual noise of less than -96 dBm, a frequency response of 20 Hz to 20 kHz, 0 +/- 1 dB and a total harmonic distortion of less than 0.05%. There are two inputs and two outputs.