Marshall The Guv'nor is a guitar effects pedal with adjustable GAIN, BASS, MIDDLE, TREBLE, and LEVEL controls. Early model made in England, equipped with a Motorola TL072CP. There is a slight crackle, but it is fully functional and distorts smoothly and pleasantly. - Brand: Marshall - Model Name: The Guv'nor - Controls: GAIN, BASS, MIDDLE, TREBLE, LEVEL - Connectors: Input jack, Output jack aguilar darkglass markbass musicman fender moon kensmith alembic diamond boss roland ehx jhs dod digitech maxon ibanez fernandes greco gibson shin's shi-ei vox tcelectronics klon tim Timmy Vemuram danelectro Please note that we retain serial numbers and internal circuit images to prevent swapping and false claims of missing parts. Type... Electric Guitar