Originally Posted by CFGamescape
Good stuff. Can you recommend good replacement opamps?
I'm currently running 2X LME49720 in the ompamp slots. If you haven't stumbled upon it yet, there's a novel of a thread covering modifications to the card.
Originally Posted by RustA
Have you ever heard about O2 amplifier? O2 is way cleaner and precise than ST(X) amplifier or E09(K) which is basically the same design. I have owned both, I know what I am talking about. You cannot expect wonders from soundcard's integrated amplifier (or from Fiio's E09), especially not in terms of current output.
Annies are low impedance current hungry headphones. Of course, damping factor of 7 or so is not bad but for a total control of the headphones' drivers, you definitely need as low output impedance as possible. STX is not good enough in terms of current, and not even completely suitable in terms of impedance match. Once again, STX or E09K are ONLY suitable for high impedance headphones which don't require current but voltage.
Both O2 and Magni will work better... Both cost around 100USD. That said, I would invest few dollars extra into better adapter for O2 plus went for 1x gain, to get the very best performance.
I understand that you can have a different opinion... But please, back up your point of view somehow! Loudness is not equal quality...
I've heard quite a bit about the O2. On a few occasions I've gotten some long sit down sessions with it. It's a great amplifier, and definitely a bargain. It is a little difficult to call it a 'giant killer' as it is often purported to be. I don't think the K701 driver is really a current hungry headphone. Yes, it needs a good chunk of voltage over IEMs or consumer line headphones, but I think synergy is much more important.
The Magni and O2 working better could be up for debate. The K701s for a long long time have been more about synergy with an amplifier over just about anything else. The good bass bump the STX gives in stock form, may actually be just what the doctor ordered for the people who think these are just way too bass light.
My recommendation to Gamescape is: just plug in the headphones. Don't worry about your next purchase, the next thing to buy, and if you're giving them enough power. Just listen for awhile. If you think to yourself "these really don't sound right and they really need more power", then look into a budget unit like the Magni or O2. If you're instead thinking "I wonder if these would sound better with the Magni or O2", from my experience, I'd advise you to not get ahead of yourself. If anything I'd call the Magni and O2 a sidegrade. If you really want to step up the performance of the STX, save up and get a higher level amplifier.
Originally Posted by dleblanc343
Nobody has stated the anniv as being better than the K1000 tho...
Nope, they just aren't. AKG by Harman isn't the same as the old AKG. They're just playing with plastic colors and pads, not really making a "statement" product like they used to.