MAXON SD9 The black sheep of Maxon's 9-Series, the Sonic Distortion offers a convincing balance between transistor and op-amp characteristics. The unique Low Boost/Hi Boost tone control offers plenty of beef while the output and distortion knobs dish out up to 55dB of vicious gain boost. At low-gain settings, the SD-9 functions perfectly as a full-frequency overdrive. Crank the gain and get gut-wrenching grind and singing sustain that'll turn a clean amp dirty and a dirty amp downright evil. Features true bypass, and die-cast zinc case. FEATURES Convincing balance between transistor and op-amp characteristics Unique Low Boost/Hi Boost tone control offers plenty of beef Output and distortion knobs dish out up to 55dB of vicious gain boost AC/DC operation (order optional Maxon AC210N adapter) Die-cast zinc case True Bypass Switching PRODUCT SPECS Input: 1/4" mono jack, Impedance 500K Ohms Output: 1/4" mono jack, Impedance 10K Ohms or lessControls: Distortion, Tone, LevelPower: 9V DC, 6 mA, center pin minusDimensions: (WxDxH) 74 mm x 124 mm x 54 mm Weight: 580g Model: Maxon SD9