The Voodoo Lab Sparkle Drive MOD keeps the original Sparkle Drive overdrive and adds three custom mods selected with the MOD switch. Vintage mode is the stock mid-focused 808-style circuit for blues and solo boost. Lead adds gain with a thick low end and soft highs for single-note lines. Rhythm cuts mids for punchy power chords and funk. High Gain delivers articulated highs and aggressive low end when you need more saturation from one box. The CLEAN control blends a boosted direct signal with the overdrive to restore attack and feel that traditional overdrives compress away. Push CLEAN up and it also works as a 100% clean boost with high output. True bypass via gold-contact relay. Operates on 9V DC or a 9V battery. Handmade in the USA. Specifications Type: Analog overdrive with clean blend Modes: Vintage, Lead, Rhythm, High Gain Controls: Gain, Tone, Clean, Volume, MOD selector Switching: True bypass, gold-contact relay Power: 9V DC, 35 mA, center-negative (or 9V battery); supply not included Dimensions: 4.75 x 3.75 x 2" (121 x 95 x 51 mm) Weight: 1.15 lb (0.52 kg) Origin: Handmade in the USA In the Box Sparkle Drive MOD pedal