I'm a bit new to the enthusiast world of hi-fi audio, and have longed after Sennheiser HD-600 series phones and a nice amp for years and years-- I decided to pull the trigger this holiday season. I ordered the Crack kit today and the 650's are on their way. I have a pretty high quality DAC on my computer mobo, but it only outputs as a single 1/8 headphone connector. Is the norm to just buy an RCA set that splits the two channels from the single connector? This may be a stupid question and I think that is the correct answer, but I'm wanting to have all the proper equipment at hand when the time comes--I've got LOTS of lossless audio to enjoy! Any recommendations on a specific cable or does it matter much at all? Thanks in advance and cheers!