The Booster side will provide plenty of extra volume (‘Level’ control) with the added bonus of a ‘Gain’ control to dial in a little drive or edge. Another feature of the booster side is the ‘Norm/Fat’ toggle switch, which, when engaged in the ‘Fat’ mode, will give your bottom and low mids a kick in the guts.
The Compressor can be used by itself or in combination with the boost. Its circuit is one of our own based on a few legendary compressors that we have admired and found useful in the past. It features a ‘norm/bright’ switch that, when switched to the ‘bright’ side, will give your sound bit more zing or top end.
Because The Mrs features two circuits (compressor and booster) you can, of course, combine the two. Doing so will give you a sonic pallet that goes from loud and clean to outright filthy. If desired, you can drive the booster harder with the compressor side resulting in some pretty crazy (and loud!) dirt tones. This sort of application is just the thing to push an amp in near breakup mode right over the edge. In short: Experiment!