My dac has one output and I need 2, one for my speakers and the other for my headphones. I don't ever need both to work at the same time and plugging and unplugging 2 RCAs at least once a day isn't a very appealing idea. 1. Would this thing degrade sound quality in any considerable way...

I was wondering if anyone bothered to try something else besides the stock pads with the headphones mentioned in the title. The stock pads are very comfortable, I am interested from a modding perspective and would like to know the pads used, how easy it is to put them on and the effect they have...