Mosky Guitar AMP Effects Small Size Dyna Comp Compressor Stompbox True Bypass Musical Instrument Compatible with most electric guitars.For wide-ranging use. Useful for increased sustain with stable dynamics. This strombox guitar effects will produce that percussive, clicky sound on a clean guitar that you've heard on so many pop hits. It also adds smooth sustain to lead lines. True bypass design to minimize tone loss Small Size, Big Sound