raiders4life12 said:
My wifi is not reliable enough to use an airport express the amp is not near the router. I also wanted to use the same usb that i am going to use with my MacBook. Also I wanted to use USB so I could use the Cambridge DAC instead of the iPhones.
Get an Airport Express and buy or borrow a long ethernet cable.
Set the AEX up with the cable, then once this is done you can remove the Ethernet cable and just transmit to the AEX over Airplay. Set the channel to something like 36 in the 5Ghz band to avoid regular wi-fi traffic, works beautifully.
As I keep saying, the digital out from a macbook usb is fundamentally different from the digital output from an iThing. There are good reasons for this though it is beyond my area of expertese to explain why.
Using an AEX means that the dac in the iThing is not used, you can use the dac in the AEX or output digital optical to your Cambridge dac, your choice.