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So I've heard that there's a way to make CS:GO have 3D sound...
Is there a guide for that somewhere? I can't seem to find it.
It's the same process for almost every Source-engine game:
-Enable ALchemy (that is, copy dsound.dll and dsound.ini to the game's root folder)
-Set "snd_legacy_surround 1" in the console
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Some of my current options are:
a 2nd hand Auzentech Forte 7.1 for ~US$ 50 - received the Win 8 driver recently, X-Fi, headphone amp, no warranty so a bit risky
a 2nd hand Asus Xonar DX2 for ~US$ 70 - an older card, not sure how it compares to more recent Xonars, no warranty so a bit risky
a 2nd hand Creative Titanium for ~US$ 70 - the vanilla version, no headphone amp (?)
a new Sound Blaster Z for ~US$ 100
I'm not limited by a certain budget but wouldn't like to overspend on unnecessary features (such as a hugely powerful amp, considering my headset).
Any opinions on the options above, or other cards I should consider?
Out of those options, I'd probably pick the X-Fi Forte (especially at that price), though I would try to make sure it has a heatsink on the DSP or some other indication that it's one of the later batch of cards. Also, I'd definitely opt for Daniel_K's X-Fi Support Pack over the Auzentech drivers I had used several months ago.
Then there's the X-Fi Titanium HD, which is very capable, but generally around $100-120 these days, thus more expensive. Any advantages over the Forte that aren't driver-related probably wouldn't be noticeable with your headphones.
If you want to go Xonar for any reason, I'd suggest either the cheap DG(X) or the high-end Essence ST(X) line.
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Creative cards don't really handle positional cues better in general than Xonar cards, unless you're concerned with older games, but impedance is absolutely something to take into account when selecting your card/amp... AFAIK most of the ASUS Xonars have relatively high output impedance so even tho they have better amps than Creative's older cards they might sound a bit uncontrolled with lower impedance headphones... Dunno about output impedance on Creative's cards...
Those Beyers are actually harder to drive than the average headphone because of their low impedance/sensitivity, unlike most low impedance highly sensitive headphones.
The Titanium HD is Creative's best card and it's often on sale for $100 (should be discontinued for the Z series eventually), doesn't have any discrete amp despite what they advertise tho. A regular old X-Fi titanium seems a little expensive at $70 if it's second hand... I'm not terribly familiar with the Forte, the DX2 is kind of a rip considering you can buy a new DGX for like $50. From what I've read, the THX/SBX headphone surround emulation onthe new Z series isn't as strong as Creative'd old CMSS-3D or Dolby Headphone (used on Xonars), haven't heard one myself though.
You may or may not eventually realize you actually want an external amp to get the most out of that headset, so I wouldn't overspend on the card. Cheap DGX, the Forte if you read good things about it, the Ti HD if you find a deal, IMO.
For software-mixed games, it's really down to a matter of preference on CMSS-3D Headphone vs. Dolby Headphone, with plenty of outspoken proponents on both sides, myself and Mad Lust Envy among them.
They say the Titanium HD has a 35-ohm output impedance on the headphone jack. Didn't seem to faze the HE-400 much, but orthos are known for flat impedance curves, and I don't have any demanding dynamics lying around. (Nor do I plan to buy any when most of 'em are priced in used Stax territory. On the other hand, if someone would kindly lend me some more sets to review...an AKG K/Q70x or Sennheiser HD650 would surely be the ticket for demanding dynamics!)
The X-Fi Forte claims to have some kind of headphone amp, but I don't know if it's a dedicated circuit or another Titanium HD advertising incident. It'll get plenty loud, but I don't know the actual output impedance or the control it'll have over more demanding dynamic/ortho drivers.
And for that matter, the money spent on amplification at this point would be far better spent just getting a newer headphone, and I'd only consider paying up for the amp if the headphones absolutely require it (read: electrostatics).