A:Descriptin:SAPHUE Electric Guitar Vintage Overdrive/Volume/Tone Knob Pedal Effect Mini Single Type DC 9V True BypassA representation of the classic Screamer Tube, the overdrive effect is mellow, mellow, smooth-just outstanding! Also nice sustain. True bypass design minimizes loss of tone. Aluminum alloy housing with paint finish. Features:Power supply: 9V DC (not included in this package)Input & Output Socket: Single 1/4 inch (instrument cable). LED Light: LED indicator shows the working status. True Bypass: Minimizes tone loss. Full Metal Shell: Aluminum alloy housing with lacquer finishB:Descriptin:SAPHUE Electric Guitar Drive Pedal Gain/Level/Tone Knob High/Low Frequency Pedal Effect Mini Single Type DC 9V True BypassThe drive pedal gives you a rich, bordering on distortion overdrive, surpassing what a tube amplifier diode can provide. Open it up and find the kind of response and spacious harmonics of the large overdriven tube amp. Aluminum alloy housing with paint finish. Features:Power supply: 9V DC (not included in this package)Input & Output Socket: Single 1/4 inch (instrument cable). LED Light: LED indicator shows the working status. Full Metal Shell: Aluminum Alloy Case with Lacquer Finish C:Descriptin:SAPHUE Electric Guitar Crunch Guitar Effect Distortion Gain/Volume/Tone Knob High/Low Frequency Pedal Effect Mini Single Type DC 9V True BypassBritish Grade