SFX-01 - Pickup Booster Specs: Gain range: 6 to 25 dB Pickup Resonance Switch: Makes a single coil sound like a vintage humbucker ("1") or high output humbucker ("2"). "1" - Resonance shift down 2-3kHz "0" - Resonance is not affected "2" - Resonance shifts down 3-5kHz Bypass: True bypass Noise: -120 dBV (referred to input with gain set at 25dB) Type of circuitry: Fully discrete, class A Distortion: < 0.1% Power: DC 9-12 V battery, or regulated DC adapter Current consumption: 3.5mA @ 9V (when LED is "on"), 1.5mA @ 9V (when LED is "off") Input impedance: 500K (when effect is "on"), Open (when effect is "off") Output impedance: 5K ohms Dimensions: 2.5" x 5" x 2" (W x L x H) (6.35cm x 12.7cm x 5.08 cm) Weight: 0.8 lb. Without battery, 0.9 lb. With battery Chassis material: Heavy duty 1.6 mm steel