Line 6 DL4 Delay Modeler Pedal Online Guitar Shop, Authorized dealer of line 6, Line 6 DL-4 Delay Modeler Guitar Effects Pedal the Line 6 DL-4 Delay Modeler Pedal. This 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 realtime control of all effects settings, and stereo inputs and outputs.