I like the idea of having another gadget but in reality I'll probably be using my phone to listen on the way to work so I'll look at the A /D route
I think you can use pretty much any USB compliant ADC with the iphone/ipad usb adaptor.
@Airhead started
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I like the idea of having another gadget but in reality I'll probably be using my phone to listen on the way to work so I'll look at the A /D route