GitHub - oandrew/ipod-gadget: iPod usb gadget for audio playback. Client app: https://github.com/oandrew/ipod
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Amazon.com: USB 3.1 3.0 Switch Selector KVM Switch 4 Port 2 Computers, Peripheral Switcher Box Hub for Mouse Keyboard Scanner Printer PCs with One-Button Swapping& IR Remote Control and 2 Pack USB
Using a Raspberry Pi as equaliser in between an USB source (iPad) and USB DAC | Page 3 | Audio Science Review (ASR) Forum
Archimago's Musings: MEASUREMENTS: Topping HS01 - USB 2.0 Isolator & Ground Loop Eliminator (and a listen to Santana's "Blessings and Miracles")
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