User Manual for Electro-Harmonix 720 Stereo Looper Pedal

Quick guide from the manual

The Electro-Harmonix 720 Stereo Looper provides 12 minutes of high-quality, uncompressed stereo recording time (24-bit/44.1kHz) and the ability to store 10 independent loops. The device features reverse and half-speed effects, adjustable fadeout times, and a programmable second footswitch. It can be powered by an AC adapter or a 9V battery.

Controls and Indicators

LEVEL Knob: Controls the output level of the loop being played. The dry signal remains at unity gain and analog throughout the unit.

LOOP Footswitch: Used to record, overdub, playback, stop, and undo/redo loops.

STOP/FX Footswitch: Can be set to either STOP mode or FX mode. Press and hold the PUSH: MODE button for 2 seconds to toggle between these modes. A dot appears on the display next to the STOP label when in STOP mode.

LOOP Knob and PUSH: MODE Button: The knob is a rotary encoder used to select modes (L=Loop Select, p=Loop Progress, F=Fadeout Time) and adjust values (0-9). Press the MODE button to cycle through modes and select them.

Recording and Playback

Recording a Loop: Select an empty bank and press the LOOP footswitch once. The REC LED will light solid. Press the LOOP footswitch again to stop recording; the PLAY LED will turn on and the loop will begin playing.

Recording an Overdub: While a loop is playing, press the LOOP footswitch once. The REC LED will turn on. Press the LOOP footswitch again to stop overdubbing. The loop will continue to play with the overdubbed audio.

Stopping Playback: Press the LOOP footswitch twice quickly, or press the STOP footswitch once.

Loop Management

Erasing a Loop: Stop playback first. Press and hold the STOP (FX) footswitch for 2 seconds. The MEM LED will blink four times to indicate the loop is erased.

Loop Select Mode (L): Use the LOOP knob to select banks 0-9.

Loop Progress Mode (p): Displays the loop's progress. For loops under 10 seconds, it counts in seconds; for longer loops, it counts in tenths.

Fadeout Mode (F): Allows you to set a fadeout time (0-9). A value of 0 disables fadeout. Other values correspond to specific times ranging from 1 to 60 seconds.

Effects and Advanced Settings

Reverse and 1/2 Speed: Press the respective buttons to enable these effects. They can be used at any time during playback or overdubbing.

Undo-Redo: During playback, press and hold the LOOP footswitch for 2 seconds to undo the last overdub. Repeat the action to redo it.

Looping Order: You can initialize different workflows (REC/PLAY/DUB or REC/DUB/PLAY) by unplugging the power, then plugging it back in while holding the REVERSE or 1/2 SPEED button respectively.

Factory Restore: Unplug the power, then plug it back in while holding the LOOP footswitch for three seconds until the REC, PLAY, and MEM LEDs flash.

Connections and Power

Inputs/Outputs: The unit features 1/4" Left (Mono) and Right inputs and outputs. Use the MONO/L input for mono signals. The MONO/L output jack acts as a power switch when using a battery; disconnect the cable when not in use to save battery life.

External Footswitch: The FC Jack (1/4" TRS) supports external 3-button controllers (e.g., Digitech FS3X) for bank up/down and undo/redo functions.

Power: Requires 9VDC, 75mA (max) with a center-negative plug.