TC Electronic G-Force Rack Mount Guitar Multi Effects Processor with 8 Simultaneous Effects and Memory Card Slot Front panel features a clear display and tuner, tap tempo, 9 Effect Block keys, two cursor keys for vertical navigation, a dedicated Parameter Select wheel and a dedicated wheel for changing Parameter values Choose to use the pre-programmed presets for generic coverage or create and store up to 100 customized User presets Unique external control of virtually any parameter via a MIDI board and expression pedals