AMP MODE BOOST Speaker Cabinets select the option "9v power

select the option "9v power supply included" in the power supply drop down box

while the left side passes through the Optical

Built to withstand the rigors of time and the road

MID Q - Internal trimmer

you get ALL of your tone at conversation volumes

AMP MODE BOOST Speaker Cabinets select the option "9v powerAMP MODE OVERVIEW The AMP MODE circuit is based on a MOSFET transistor which is a very popular type of transistor to use for boost circuits because it has many amp like characteristics when it clips etc. There can be downsides to this circuit though. Several very popular MOSFET boost circuits on the market have a very noticeable crackle when their boost knobs are rotated. We fixed this issue in the AMP MODE so it is perfectly silent when the boost