Well if you had heard the HD 560 Ovation II's you'd know they are no weak headphone, many in the HD 560 II thread said they are actually better than the newer 600 and 650 as they don't have the veil , all I know in the last 20 years of owning them nothing and I mean nothing has sounded more detailed in audio. I honestly for real can't even comprehend anything being more detailed than them.
As for using onboard audio, well Purity Audio is rated for 600 ohm twice that of the HD 650 and my HD 560 II's so and they power the 300 ohm 560 with ease and sound ultra clear using it.
Do I wonder about desktop amp/dac yea sure, but after what I just spent , mind you after reading this forum for a decade and waiting 20 years just using 560 II's. I say I'm probably the most patient addict here haha and I can't wait to hear the newer pairs of what Senn has to offer.
How 650 sound and what not has been talked about forever , I can't personally add anything really to whats known about them, but pairing them , 560 II' and Momentums with this new breed of onboard audio is certainly still up for debate. I can't wait to find those answers come monday.
Oh also let me edit to say yea I want to try a Carda or Clou Red JasPis cable so yea maybe I have went off the deep end. But I'll also say I bought used so and I'll never pay anywhere near full price for those cables. I seen one on ebay go for $37 another was sold for $40 elsewhere. I'll just hold out another 20 yrs if I have to hehe.
Edited by hdtv00 - 3/7/14 at 5:01pm