Gain range: 0 to 25 dB Pickup Resonance Switch: Makes a single coil sound like a vintage humbucker ("1") or high output humbucker ("2")."1" - Resonance shifts down by 2-3kHz"0" - Resonance is not affected"2" - Resonance shifts down by 3-5kHz Bypass: True bypass Noise: -120 dBV (referred to input with gain set at 25dB) Type of circuitry: Fully discrete, class A, push-pull output stage Distortion: &lt 0.1% Power: DC 9 V battery, or regulated 9-18V DC adapter Current consumption: 4.27mA @ 9V (when LED is "on"), 2.80mA @ 9V (when LED is "off") Input impedance: 500K (when effect is "on"), Open (when effect is "off") Output impedance: 150 Ohms Dimensions: 2.61" x 4.90" x 1.40" (W x L x H) (6.63cm x 12.45cm x 3.56cm) Weight: 0.8 lb. without battery, 0.9 lb. with battery