How do I play my electronic drumkit in Rock Band 4?
Supported electronic drumkits on both consoles include the ION Rock Band Drum Rockers and nearly every electronic kit with MIDI-Out capabilities.
You will need an Xbox 360 Rock Band 3 MadCatz MIDI Pro Adapter AND a PDP Wired Legacy Adapter to use your ekit in Rock Band 4.
NOTE: The Wired Legacy Adapter does not work with other wired instruments for the Xbox 360, such as older music game controllers or Rock Band (1) instruments.
You will need a PlayStation®3 Rock Band 3 MadCatz MIDI Pro Adapter to use your ekit in Rock Band 4. As with other legacy controllers, your ekit will only worth within the game itself.