This is a fantastic unit with no issues and comes with foot controller. The foot controller is powered by the rack unit with an XLR cable from the unit to the controller. No extra power supply is needed. The data from the controller is also supplied by the XLR cable. This was my backup unit but I do not need a backup any longer. It never left my studio, because I never needed the back up.
It can store up to 768 presets. Go to https://www.fractalaudio.com/p-axe-fx-ii-preamp-fx-processor/ for information from fractal. It has top-of-the-line studio quality FX. The following is a list of on board FX:
29+ Drive Pedal models
Dozens of Delays
19 Reverb types
Totally customizable Wah
Highly customizable Whammy
Fixed and Intelligent Harmony
Shimmer, Crystals, etc.
Phaser & Uni-Vibe
Flanger, ChorusPanner/Tremolo
Rotary Speaker
Tone Match
7 powerful Filter types
Graphic & Parametric EQs
Many Compressor types including pedal, studio, and optical
Limiter/GateFront-end Noise Gate
Mono Guitar Synth
Built in Looper
New “true” Tape Echo
VocoderAnd more…