1. Pure analog circuit design.
2. Wide range of adjustment.
3. Hardware pass-through design.
4. Powered by AC adapter.
5. SUSTAIN Sustain knob: Adjust the amount of compression effect.
6. ATTACK Tuner knob: Adjust the compression effect of the start-up time.
7. LEVEL volume knob: Control the volume of the effect pedal. When the effect pedal is working you can use this knob to adjust the corresponding effect pedal volume.