I have just purchased this to use with my iphone and PC as I thought it would be more useful to swap from between the two as my first foray into the world of DAC and (slightly improved) digital audio.
I have yet to get hold of a apple to camera cable to use it on my phone but have plugged it into my PC (sound card on the front with the usual usb/minijack outlets) and it makes a huge difference, but with all audio i am getting a high pitched whine. When I pause the audio the whine carries on for 8-10 seconds and then stops. The whine kicks in even if the PC makes it's 'bell sound' when plugging in or removing a peripheral and lasts the same amount of time. It's constant with a permanent audio source, be it itunes, you tube etc. Is it just a rubbish card or something else. I am running the dragonfly with the jitterbug but makes no difference if attached or not.
I am a complete newb with this stuff so any help would be appreciated.