This Greer Amps - Moonshot Class-A Treble and Mid Pre is a great boost for bringing a vintage sound and texture to push the front end of your amp. Here with two controls, a simple Master Volume and Treble/Mid boost, this Moonshot allows you to dial in just the right amount of low-end and midrange dirt and texture into the circuit. Turn up the Master Volume to push your amp into some classic overdrive snarl. Want to fatten up a single coil? Roll down the Treble/Mid knob. Want to brighten up a Humbucker? Roll it back up. Simple controls for some classic tone and all analog texture.