IK Multimedia SPPDLCSIN Audio Interface for Guitar and Bass Players Manual Inputs Record 2 simultaneous guitar and/or bass instruments at the highest possible quality MIDI Controller: The built-in expression pedal, switch and volume knob can be assigned to any parameter of the AmpliTube software or any other amp and FX modeling software that responds to MIDI control Versatile: Can also control any FX plug-in, virtual instrument or DAW with MIDI control capabilities Expandable: Add an additional expression pedal and 2 additional control switches to build a powerful pedal board rig with a total of 6 controls for live and recording use Familiar, Classic Design - Classic rugged, metal, wah-style, compact enclosure with a volume knob and 3 LED indicators that operate as a tuner or level indicator (when used with AmpliTube)