The Kldguitar SD-03 is kind of three-in-one distortion effect.It features fully independent distortion circuits with different frequency-responses, which can be mixed together in any way you like it. This unique construction enables you to create extraordinary sounds, which were impossible to realize by other means and will satisfy many metal enthusiasts. Features Incredible-sounding distortion pedal with unique dual-gain circuitry · Provides super-long sustain and heavy mids and lows like a stack of overdriven amps. · Three-band EQ with semi-parametric Mid control offers a wide range of extreme distortion textures. · Controls: LOW, MID, HIGH, LEVEL, TONE, DIST. · A must-have pedal for any hard rock or metal guitarist. · Strong virtually indestructible steel enclosure. · Heavy-duty industrial footswitch · inside jacks. · On/ Off LED . · True Bypass design. · Military-spec glass-epoxy circuit board. · AC jack ( power supply sold separately) . · No tools required; battery compartment ( 9 volt not included) . · DIMENSIONS: 5.5( W) x50( H) x12.3( L) CM ( unpacked) · Weight: 0.7kg ( unpacked)