By the way, I came across a great deal and may get the Sennheiser HD 800 and a budget amp/DAC combo in the near future. Once I do, you could walk me through a test of its positional capabilities in a streamlined way if you like, since I don't normally do computer gaming.
Honestly, given the kinda gaming I've gotten the impression you do, I don't expect it to matter much. Positional cues are most important in shooters and have value in strategy games (Somewhat, but not important.) and stealth-action games. Now on the other hand, if you play a shooter that implements virtualization like L4D2, Call of Duty, or Battlefield, you'll benefit from it. The trick is just to turn on the virtualization and...play. Listen for gunshots, footsteps, character communication, anything that hints to the position of something or someone in your vicinity. Some games have rendered this tech useless or at least made it a chore to get working, though. Counter-Strike titles don't have it enabled by default. You have to toy around in the developer's console to get it working at all.
The HD 800 is often said to have the best imaging of any headphone. If the definition of "the sense that a voice or instrument is in a particular place in the room" is to be taken at face value, it would appear that imaging and positional ability are synonymous.
Imaging is important but generally, gamers seem to focus on having a wide soundstage as it highlights the direction of a sound, especially in shooters. I'm not sure about this but based on what I've read, imaging is mostly useful for determining distance, which is important but secondary to soundstage in most shooters. It's also worth noting that virtualization can kill imaging: CMSS-3D is, to my ears, VERY accurate directionally, but it makes everything sound fairly close. Then again, I AM using headphones with crap imaging but a wide soundstage, so that could just be me.
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Positional capabilities of equipment is how easily it allows a person to get an idea of the spatial position and distance of sounds, and obviously it is different person to person, and even time to time, i.e. learning about how gear and the sound clips in games sound which can take a lot of time to learn even with 3d dsp. Most games already automatically alter the sound of audio clips based upon distance and spatial position relative to the player's character's position and direction, and although most might not deliberately do time delay, stereo panning and volume differences are more than enough to pinpoint where objects are relative to character once you learn how different games do it. What 3D dsp's can do is deliberately exaggerate spatiality cues like panning, reverb, and delay, but not essential to figuring out spatial position and distance, and imo, they always sound worse compared to not using such dsp when using mid-fi or high end gear. With mid to hi-fi gear, it really is more enjoyable to listen to the sounds with as little DSP as possible, and let your brain acclimate and learn to tell distance and position of sound clips with the gear you have.
Enjoyability is not functional value, it's an aesthetic. "Not essential" does not mean "Not helpful." If it was unquestionably superior for practical purposes only, I wouldn't have made this thread. We're talking straight-up competitive gaming value at any cost to the sound quality. I don't care if it sounds like peanuts dropping on a tin can as long as I can tell with more accuracy where the sound came from. DSPs seem to work well for that. If the solution you're recommending is better for that and that in particular, please explain.
I don't like to diss dac's and amp's, but people reading this thread are going to get the idea that somehow sound cards might actually compete with real audiophile gear, which I think is really sad. First of all, sound cards aren't designed for sound quality, they are designed to do a lot of different things like a a/v receiver is designed to do a lot of things. That is not to say sound cards aren't useful, they will always have a purpose if people actually use them for their functions and don't mistake them as devices that have the main goal of improving sound. I started out in audiophilia with good sound cards like HT omega claro, and I can assure you, sound cards have nothing on real audiophile gear. Someone said STX sounds about the same as the $1000 benchmark dac. Yeah, that's because they both sound as flat as pancakes using cheap ass opamps and archaic designs, and imo aside from somewhat more macrodetail they are little different than mp3 players or $25 cd players. Comparing them to real audiophile gear is like comparing viewing 2d images on a roll of film vs realistic 3d images. Soundcards are suboptimal for sound quality for many different reasons and will always be suboptimal, because of things like the SMPS in a computer having orders of magnitude more jitter than linear psu's, being small enough to fit in computers, and being swiss army knives with a kajillion inputs and outputs that audiophiles will never use but which are there so people who actually want to record stuff or use 7.1 can do so through the sound cards. And if you buy a $200 soundcard for the 3d DSP SOFTWARE and not for the other functions that soundcards have, you're way overpaying.
Flat is good for positional audio, yes? Which is the entire point of this thread. Enjoyability is a secondary -tertiary, really- consideration to a highly competitive gamer, judging by the crap they usually buy to gain an edge in the fight. The impression I've taken away so far is getting a cheap DAC/amp combo along with an entry-level sound card for the DSP is a cost-effective solution, but this previous poster (Who, I should note, has actually compared the Essence cards with the DACs he was referring to) seems to think that for the price, they're actually good deals, although obviously you don't need them for just the DSP/software. By the way, he said they're close, not at the same level, and that most people won't hear much of a difference. Nowhere did he say they were equal.
People trying to decide between a sound card and a good external dac/amp for sound quality and not for the stuff offered by sound cards, then obviously go for the external dac/amp. Something like the nfb-15 or nfb-11 would be leagues ahead of any sound card. And that's not hyperbole, if you read any reviews of what happens when you stick burson or audio-gd discrete opamps on soundcards, it's usually people saying the sound difference is drastic and immediate, and even soundcards with discrete opamps can't compare to these kinds of entry level audiophile dac/amps.
http://audio-gd.com/Pro/Headphoneamp/NFB1532/NFB15.32EN.ht
And what is "the stuff offered by soundcards?" Positional audio? Or something else? If it's the former, then, once again, that is the entire point of this thread. I apologize if you're simply here to correct something erroneous that Derbigpr said but most of this seems irrelevant to this thread's topic. If it's not, clarify, please.