you dont think the emotiva stealth would do it justice?
so for your 650hd do you use 2 dacs and 2 amps at the same time? or do you usually use either bitfrostt+lyr or ud301+bhcrack, etc. ? (sorry if this is a dumb question)
I feel that is not good for me considering most people ive met with 650hd usually stay around the 500$ range for dac/amp and they make much more money then i do, so i really am in no position to buy 1000$ amp/dac.... im leaning most to the emotiva stealth cus it also has spidif input (i am a PC gamer and plan to utilize dolby surround for games too) - the emotiva steallth is the only thing i've found in that price range that has everything i want.
I've never used the Emotiva Stealth but used to have a Emotiva pre-amp & amp a while back and it was pretty good, actually sold them to start this headphone journey.
Usually use Bifrost and BH Crack for the HD-650 but the Ember is also really good and great if you don't want to build the BH Crack. Current Bifrost is $400 and Ember is $350, add $50 for shipping and you are at $800, for this you get a great DAC and one of the most versatile amps around, drives high z headphones like the HD-650 and planars like LCD-2f with no problem. If you feel that dolby surround is a feature that only the Stealth provides then it will probably be your best bet at this time and it seems to have a few posters that really like it. I used the optical for both my Bifrost and UD-301, don't like dealing with drivers for the USB, too many issues and possible conflicts with other drivers.
For playing games I use a HD-700 out of a Teac AH-01 (its below the lower right edge of the TV) or a small Sony 5.1 amp (can't see under the desk) and 5 speaker / sub setup, see pic below:
Center channel is missing in this picture, just moved the blueray player up from under the table, can also see old m/m stack on the computer. If gaming is more important then HD-700 is easier to drive than the HD-650 but see that you don't like too much treble it might be a bad choice.
My suggestion, keep the HD-650 and save for now, I was able to live with my HE-400 and X1 out of my computer for a few months before having enough funds to update my DAC and amp