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@finger_jockey > Virtually all of the Pioneer DDJ controllers can be used as a MIDI device with an iOS device. Unfortunately, most of them require drivers on the host to function, so the majority do not work as audio interfaces with iOS. Controllers like the WeGO family were designed specifically for this purpose and those are the only ones we officially support as audio devices.
How was it you got the SB2 working with an iOS device? Even with a Y cable to provide external power from a wall adapter, I get an error message with the DDJ-SB/SB2/RB:
