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IK Multimedia iRig MIDI 2 Universal MIDI interface for iPhone/iPod touch/iPad and Mac/PC
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USB MIDI Cable,USB 2.0 Type B to iOS Cable,OTG Lightning Cable Compatible with iOS 10.32 or Later Devices to MIDI Keyboard,Electronic Music Instrument,Audio Interface,Midi Controller and More-5FT - Walmart.com
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iRig Pro DUO I/O 2-channel audio interface with MIDI for iPhone/iPad and Mac/PC - NLFX Professional
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Amazon.com: Lighting to MIDI Cable, 6.6FT USB Type B OTG Cable 2.0 iOS Devices Compatible with Select iPhone,Midi Controller, Electronic Music Instrument, Midi Keyboard, Recording Audio Interface, USB Microphone : Musical Instruments
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