ISP Technologies Decimator G-String Pedal V-II, Noise Reduction Pedal, 6.3 mm Jack inputs and outputs for Guitar IN and Guitar OUT, Further connections: 6.3 mm jack DEC IN and DEC OUT, Input impedance: 500 kOhm, Maximum input level: +12 dBu, Effective noise reduction: 60 dB, Dynamic range: 100 dB, Total harmonic distortion: .05%, Power consumption: 35 MA @ 9 V DC Release response, Compatible mains adapter: Article number #409939# (not included)