The JH1 Jackhammer Effects Pedal contains the most extreme distortion level to date, combined with a Contour section that allows you to not only scoop out the mids, but also choose the frequencies at which the scoop occurs. This means that you can tailor your sound to your own individual requirements. The sounds contained are always natural and realistic, like a super-high-gain valve head pushed to the max. 20dB boost on Overdrive 2 for super saturation on DSL401 FX Mix control for the parallel FX loop Master Reverb control for Sound Enhancements large spring reverb Master volume that acts as output attenuator Speaker emulated DI out Unit Dimensions - Dimensions (L x H x D) - 22.4 x 18.5 x 10.2 inch; Weight - 50.7 lbs.