This is the Main Amphetlabs Soundhead lo-fi system Fuzz. Manufactured in South Yorkshire by D*A*M. Essentially this is a copy of Robert Hampson's (from Loop) Jumbo Tone Bender, which he used on all the Loop records. Roberts original unit came with some factory "faults" which made it a real unique sounding Fuzz pedal. David Main recreated it for him so he could use it whilst touring and it also features on the new record.