The PRO-Adapter connects to an Xbox 360, PS3 or Wii via USB, and the MIDI instrument plugs into the port on the side of the device. A three-way switch in the center (above the system button) toggles between drum, keyboard and guitar inputs. Just above the switch, is the velocity adjustment wheel used to "tune" MIDI drums and reduce cross-talk during gameplay. The triangular wedge button on the bottom right of the PRO-Adapter activates "Overdrive" mode in Rock Band 3, and a belt clip on the back of the peripheral keeps the adapter secured to your person (just mind the length of the USB cable as you leap about). There's also a headset jack on the adapter.
"We can't possibly guarantee compatibility with all MIDI instruments," warns Verrey, but the MIDI PRO-Adapter "should work with the vast, vast majority." Verrey guarantees compatibility with the real Fender Squier Stratocaster guitar that works with Rock Band 3, and a full MIDI instrument compatibility list will be published prior to the MIDI PRO-Adapter retail release ($40) this holiday.
Take a closer look at Mad Catz's Wireless Keyboard Controller in the gallery below and head past the break for full details.