Carr Mercury boost switch

[kevmin]

Anybody here know how it works? What are the tonal differences and how are they achieved? Does it change bypass cap values? Thanks.

[Stan Malinowski]

The first "boost" position adds gain to the amp by taking the tone stack out of the circuit. The "second" boost position also removes the tone stack circuitry, but adds even more gain by removing the reverb circuit drivers. Pretty simple ideas that work GREAT!

[kevmin]

So you don't have any reverb available on the "second" boost setting? But you still have reverb on the "first" boost setting? I want to make sure I understand. Thanks.

[Stan Malinowski]

Reverb is still there on "boost 1". No reverb is available on "boost 2".