I have a pair of Sennheiser HD25-1 II's that I would like to use on my ps3 when playing games or watching movies as I currently do not have a speaker setup and just using the in-built speakers on the TV which suck. So I have 2 questions:
1. To get this connected to my playstation, I used the standard AV cables, going into the playstation, then connected an RCA to 3.5mm female adapter, then a 3.5mm extension cable from the adapter to my headphones so the headphones reach while I'm on the couch. There's just one problem with this though...no volume control! So, to add volume control, is it simply a matter of adding one of these: http://headphones.com.au/psingle?productID=352
2. I know this setup probably won't give me the best quality audio, so can anyone recommend a good setup to give me the best possible audio quality out of my headphones without spending a fortune? From the brief research I've done, adding an Astro Mixamp seems to be pretty popular...does anyone have any experience with this setup and would you recommend it, or should I go for something else?