Feature:
You have zero latency monitoring. This is it's main value along with the low noise AD and DA converters. It does work very well with powerfull computers. My 2008 PC dual core notebook, has some stutters when playing or recording but most of the time the stutter is not in the recorded file, it's just a playback problem. However, use a powerfull PC! It helps a lot. XLR in is nice to have, even the line jacks are balanced if you want to. S/PDIF is there but I have not used it yet. It seems S/PDIF out is not always available! Phantom power, which works. Has MIDI in and out but never tested it yet. The guitar input is crap. This is no real Hi-Z input! It should be done with a switch because you really need to change the impedance of the input for guitars. Emu claims it can be done with the stageless potmeters but forget it. Even with a phantom powered DI box, guitars still don't sound great. No high frequencies... You have sample frequencies up to 192kHz but not with Mac and S/PDIF also stops at 96kHz. This does not matter, it's over the top. For normal music stuff I use 48kHz at 24 bit. You can go to 32 bit. You can't do field recordings because it needs EXTERNAL 5 volt power. You could make a battery thing, but that won't last long because I feel a bit of heat which means quite some power use.

Quality:
I love-hate it. As said the converters and inputs are very high quality without any noise. If you hear noise, it's your gear. The adjustment of the recordings however, is very problematic. The knobs are too rough and the inputs too sensitive for distortion. The LED meters are far too rough, use your PC. I'm a very precise person, so don't think it's me. The guitar option is total crap. No real Hi-Z The house is made of flimsy plastic with flimsy knobs, but if you do not let your childeren operate it, it will last. The soft clipping option does NOT work. It's creates instant Jimi Hendrix distortion. I don't understand how it's design could have left the lab like this. The little knobs to lift ground level are also b*llsh*t. When I had a groundloop noise, those switches just turned the sound into maximum power 60Hz humm.

Value:
200 euro is too much regarding the flaws it has. It would be worth 400 euro's if the distortion and the guitarport were fixed! And I would have payed for that!

Desirability:
I had a good nerdy appeal to it, but it does not completely do what is says. It's a photo model with false teeth and a wig.

Sound:
This device records in a scientific way. There is no coloring to the sound. Most devices sound a lot warmer than the Emu 0404, so dont't be surprised by that. It's not a bad thing to have a raw recording without any character. You do have to warm it up yourself if you like such sounds. Allmost no noise, I never found devices without such a low noise level. The sound is fantastic with mikes, but the device is EXTREMELY difficult to adjust when you want to prevent distortion. Especially with line and guitar recording. The potmeters are connected to electronics that mess with the value. Over a certain point, amplification is boosted beyond control, no matter how carefull you turn the knobs. Good headphone port quality. Never heard clearer playback of recordings, and I work at a TV station where they use pro stuff.

Ease of Use:
You must know a thing or two about the system menu of your PC configuration screen and how to adjust sound cards. If not, you'll need a nerd. The software is outdated but still very useable. Cubase LE works fine but you really need to read a lot about it. Wake the card up in the VST section and connect it to channels on the timeline or mixer. It took me one day to find that out but I'm no musician at all. The Amplitube software did not work but they gave me a free new product which works fine. It's not that great but good enough for what I payed for the entire set. I never tested the other software, that comes with it. Proteus looks like something nice but it's only a guess.

Support:
The support reacts within the day but they can't do anything about the stupid design flaws anymore ofcourse.

Overall:
There is no good USB audio device. Believe me. All others have loads of noise and considerably worse microphone inputs. The Emu is the only one without these sound problems and it is the only one with zero latency. Tascam has no zero latency and clicks with guitars, Line6 devices have bad mike inputs, Edirol stutters all the time etc. etc. I'll have to live with the impossible recordlevel knobs and I'll have to build or buy a decent guitar input, with real impedance adjustment. Even a DI box did not give me what I wanted.

Feature:
Two clean preamps, digital i/o midi i/o direct monitoring no 4x4 interface touches this in this price range

Quality:
built great, cant complain

Value:
the best thing i brought for my home studio this year!!!!!!!!!!!!

Sound:
24bit 192k, pthd converters!!!!!! this sounds great!!! i had a mobile pre 1st and when i connected this one the sound quality blew me away!!!!!

Ease of Use:
pretty simple to use but having a problem setting it up with aLL the devices (windows media i tunes etc.

Overall:
this is a great interface if you are not using pt and you want great sound

Feature:
Feature packed. Wish they included the DSP FX like in the PCI version but this is way easier to use and has pres, headphone and is USB2 so I won't take any points off.

Quality:
Solid build and looks good.

Value:
After using it, it definitely feels like a steal.

Desirability:
Had to have it after having the PCI version which i'll keep for the effects.

Sound:
Top notch specs and you can hear it.

Ease of Use:
Lots of knobs, that's the way to do it.

Support:
EMU support is great. Never used their official support but they are on many forums helping and answering questions which is something you don't see everyday.

Overall:
Would buy this again without hesitation.

Feature:
good enough.

Quality:
it's plastic.

Value:
113db SNR for this price? By far the best audio I/O under $600!

Sound:
just look at the specs.

Ease of Use:
pretty straight forward.

Support:
no problems yet.

Overall:
This product has made mixing a lot easier. I usually don't have to worry about the noise floor anymore.

Feature:
Not a lot of features, but what it does it does very well. Especially considering the price. Favorite features are the soft limiters, the good metering, and the analog volume control.

Quality:
Built well and looks nice.

Value:
Very good value for money

Desirability:
I couldn't find any other product on USB that has this kind of quality for the price.

Sound:
It's very quiet and has very accurate and pristine sound.

Ease of Use:
Everything is on the panel so it's very easy.

Support:
Haven't used so don't know.

Overall:
If only this could be bus powered i'd give it a 10.

Feature:
Direct monitoring could be better but is ok - the level button comes full circle, which is annoying

Sound:
Crisp and clear - I use it for acoustic guitar. Very good considering the price, i guess

Feature:
4in/ 4 out I found 2/2 I tryed with Behringer ECM8000 measure mic, plenty of noise

Quality:
I own als PCI 0202, it was realy incredible good, USB 0404 is incredibly bad

Sound:
Can't get good sound with ASIO driver, cracking, noise no sound at all, tryed with all major ASIO synthesizers Absynth, Massive, Reaktor, buffer size set up to 500ms, no good result, There is no update driver on the Emu website

Ease of Use:
There is nothing difficult here, in fact you don't need a manual, will be better if they will something, for example if your ASIO driver doesn't work

Support:
You get some manuals, but no updates for drivers

Overall:
If I would get a good working ASIO driver, thus substantial element of the system, I would be very satisfied with this product, so I keep and I wait

Feature:
built in soft limiter is useful. The hi/low impedance inputs either get confused with some guitars, or do not bypass the mic preamps. so if you're looking to record guitar, it often sounds muddy.

Quality:
I went through two units, each one working fine for about a week before one of the inputs failed.

Value:
If your unit keeps working it's a good value, but I'd suggest something different if you want to record guitar.

Sound:
More crackling than other units at moderate input levels.

Ease of Use:
Easy to use, but only because there's not a lot of options

Support:
Fast response, but support is intended to help get it working, and have no actual knowledge of recording.

Overall:
This product wasted a month of my time