Always consult the official Owners Manuals first
Looper block
Contents
Manual
User contributions
Features
The Looper on the Axe-Fx II is a separate effect block (instead of a mode of the Delay as on the Ultra). It has the same features as on the Ultra (with Stack and Reverse) but with 60 seconds loop time. Source
It's mono!
Be aware that the Looper block sums the signal to mono.
Using switches
Go to I/O > Ctrl to assign the looper controls (such as Play and Record) to switches on a floorcontroller. Use a latching switch for Play/Stop and momentary switches for Record, Stack and Play Once. A walkthrough for the MFC-101 is here.
Surviving preset switching
The loop buffer will be erased upon presets switches, unless Spillover is enabled. If the preset you're switching to also has a Looper in loop mode, you can continue to control the looper.
Handy tool for dialing in tones
Use the Looper when dialing in sounds. Place it before before the Amp block, and record a "unamped" guitar tone. Now keep playing it back while adjusting amp settings. You'll hear the differences in real time. Alternatively, use it to compare two sounds. Place it after the Amp block and record. Start tweaking. When you want to hear the original tone, play back the sample.
