The Yamaha DG Stomp, part of Yamaha's DG series amplifiers, is a digital guitar preamp in a sturdy stompbox. The DG Stomp boasts emulation of 8 types of amps on top of 16 speaker cabs. Modulation effects such as phaser, tremolo, rotary, and other basic effects like compression and reverb are included in this multi-effects pedal. Tuner and tap tempo are included, and you can connect your expression pedal to control 14 separate effects parameters.