The Line 6 DL4 Delay Stompbox Modeler is the first stompbox to give you digitally modeled effects. Includes 16 vintage delay and echo effects including Tube Echoplex, Space Echo, Deluxe Memory Man, Analog Delay, Reverse, and many more. It also provides for 3 programmable presets and an onboard Tap Tempo control, 14 seconds of sample-loop memory, true bypass switching, an expression-pedal input for real-time control of all effects settings, and stereo inputs and outputs. Runs for up to 30 hours on four C batteries or with the optional PX-2G power adaptor. Add the optional EX-1(TM) Expression Pedal to your Line 6 gear to modify the length of your delay time as you play.