Line 6 Helix Rack Multi-effects Processor Features: Tour-grade multi-effect guitar processor Snapshot feature instantly recalls each of your tone elements Output for Helix Control floor controller Takes command of your Line 6 Variax guitars Dual DSP-powered HX modeling engine 50 amps, 30 cabs, 16 mics, and over 70 effects Editing workflow can be mastered incredibly quickly 6.2" 800 x 480 LCD display 10 inputs, 12 outputs (including four effects loops) 8-in/8-out USB audio interface Multiple expression pedal outs CV/Expression out External amp switching XLR input S/PDIF, AES/EBU, and L6 Link digital outputs