Eventide Ultra-Harmonizer, 8-Channel Effects Processor 1,800 great effects including over 20 Virtual Rack programs featuring up to 5 effects ganged together, and numerous 5.1 surround programs Create your own Algorithms using Eventide's development tool VSIG or VSIGx 1/4" instrument or XLR balanced inputs and outputs AES/EBU, S/PDIF, ADAT digital I/O Expressive effects: Continuous control of any and all parameters through MIDI, external footswitch, or Expression pedal input