"Item Description :
Its classic vintage overdrive circuit adopts 1+1 dual channel design, can be used alone or connected in series, you’ll get warm OVERDRIVE, fierce CRUNCH or vintage DISTORTION by 1+1 connected in series.
1.Each channel features independent diode clipping circuit & Feedback switch, you’ll get tones with subtle nuances by adjusting the pedal
2.Dual channel with independent Volume and Tone control
3.Power: 9V DC adapter
1* R-20 King of King Vintage Overdrive Pedal
1* User’s manual"