Well I just gave this hack a shot. I got the CCK and a USB to mini USB cable. My UHA-4 doesn't have a USB is only has a mini USB. I connected the CCK and got device not supported on this device. I then tried a reboot of the device reconnected it and the warning message didn't come up. I connected the amp to the CCK using the mini usb to usb cable and hit play on my iPod Touch. The sound came out of the external speakers and sent nothing to the amp. I'm rather disillusioned right now
is UHA-4 async or adaptive/ etc? maybe certain chipsets are not supported?