The Line 6 DL4 Delay is a programmable stomp box, chock-full of classic guitar effects, with the power and versatility of incredible digital modeling technology.
The DL4 Delay Modeler has 3 programmable presets, a Tap Tempo switch and includes a Loop Sampler; Tube, Tape, Sweep, Multi-Head and Analog Echoes; Low Res, Rhythmic, Stereo, Ping Pong, Reverse, and Auto-Volume Delays. It may be powered by either four C batteries or the optional PX2 power supply.

Line 6's programmable stomp boxes are like a full collection of rare, boutique pedals in each box. These pedals provide 16 effects, 16 presets, optional expression pedal input for control of all effect setting, complete programmability, stereo in & out and True Bypass switching.

After they finished designing POD, Flextone, AX2, Spider, and Amp Farm, they weren't content to sit, rest, and read all the raves from reviewers and users. Not at Line 6; they were spending all their time thinking about what they could build to make a guitar player's life even more fun than it normally is. One day,it came to them: Why not design the first great sounding pedals with models of all the most in demand, classic, hard to find effects, make it fully programmable, and put it into a heavy duty, pro-quality, true bypass stompbox? So they did.