Tech 21 Trademark 60 1x12" Guitar Combo Amplifier The Master Section includes Low and High EQ controls The Boost and Reverb functions can be accessed via the footswitch --either individually or in tandem by utilizing the Link button For solos, in particular, this unique feature gives you the ability of increasing the size of your sound, as well as the volume Included with the Trademark 60, is a triple-function footswitch to alternate between channels, engage the Effect Loop