Marshall JH-1 Jackhammer Metal X-L Pedal CONTROLS: O/D AND DIST MODE SWITCH, VOLUME/GAIN CONTROL, BASS/TREBLE CONTROL, CONTOUR LEVEL/CONTOUR FREQUENCY FEATURES: SOLID METAL CASING, PASSIVE BYPASS POWER: 9V JACK SOCKETS: INPUT JACK: GUITAR INPUT, OUTPUT JACK: Signal Out/ Bypass INPUT IMPEDANCE: &gt; 1 M0hms, OUTPUT LOAD IMPEDANCE: &lt;20 k0hms