J. Rockett Audio Designs Airchild Six Sixty Compressor; Effect pedal for guitar; Compressor; Emphasizes overtones and balances transients without destroying the sound image; The Tone knob controls an active tilt EQ: clockwise boosts the treble and reduces the bass, in the other direction boosts the bass while reducing the treble; Blend control allows mixing of the unprocessed and compressed signal; Threshold control determines the degree of compression; Controls: output, tone, blend, threshold; Inputs and outputs (6.3 mm jack mono) at the head end; Footswitch: effect on/off; Heavy, sturdy housing; Mains adapter connection: Hollow plug socket 5.5 x 2.1 mm, negative pole inside; Power supply: 9 V DC, 20 mA (not included - suitable power adapter available under Art. 409939); Dimensions (L x W x H): 107 x 72 x 42 mm; Made in California, USA