DIY How to Bias a Marshall DSL 40c Guitar Amplifier Using a Multi-Meter DSL40c Measure Plate Voltage

This video covers the process of biasing a Marshall DSL40c tube amplifier. The process covered in this video will be the same or similar on many other tube style amplifiers. Bias both EL34 power tubes to approximately the same millivolts Please be sure to use caution when measuring the plate voltage, as you’re dealing with around 450 DC volts. There is also the possibility of electric shock even after the unit has been unplugged, please use caution at all times. Marshall Dual Super Lead 40c DSL40c Guitar Amplifier