Guitar Effector 4 in 1 Distortion Overload Delay Effect Synthesizer black

Overdrive: Based on tube overdrive(ts9), with Drive, Tone and Level control knobs.

Drive--Adjusts the amount of overdrive; Tone--Adjust the amount of treble in the sound; Level--Adjusts the output volume.

FX Loop: The SEND and RETURN jacks allows you to expand your board with other pedals. The FX LOOP point is between the overdrive and delay modules.

Delay: with Repeat, Delay and Level control knobs, 25ms-600ms adjustable delay time.