The MF-103 12-stage phaser is a direct descendant of the original Moog modular synthesizers, yet can be used with any instrument level to line level signal. It contains two compete modular functions: a 6 or 12-stage phaser with resonance control, and wide range LFO with amount control.
- RATE rotary control, which varies LFO's frequency over a 250:1 range.
- AMOUNT rotary control, which adjusts the amount by which the LFO output varies the phaser sweep.
- SWEEP rotary control, which moves the phaser frequency response over a six-octave range.
- RESONANCE rotary control, which adjusts the height and sharpness of the peaks of the phaser frequency response.
- DRIVE rotary control, which adjusts the gain of the audio input to the phaser.
- OUTPUT LEVEL rotary control, which balances the phaser signals with the bypassed signal.
- LO-HI rocker switch, which chooses between the low LFO range (0.01 Hz to 2.5 Hz) and the high LFO range (1.0 Hz to 250 Hz).
- LEVEL, a three-color LED that is used to set the DRIVE control.
- LFO, a LED that indicates the LFO rate.
- BYPASS, a two-color LED that tells whether the phaser is active or bypassed.