
Hey,
I've not heard the 701's, but between the Sennheiser models you listed, the 600 has the tightest sound and are the most neutral sounding (through the sound of their padding). The 650 sounds similar but has a bigger soundstage and boomier bass; its bass boom colours the music nicely, but I find it can detract from the neutrality of the source.
So if i go with the hd600, would you recommend i get the Cardas cable or the 650 cable? I understand both are improvements, although obviously the 650 cable is much cheaper.



























