Pardon the double post, but here is some relevant information.
I did a test, and if you don't want to follow the link, below is my assessment that a blurbed about on it. I hope it helps(?)
I do apologize for the lack of effort, first though, in recording it but I was just messing around so that you could get an idea of inadvertent noise over asio that some devices have. This one doesn't seem to. So yay :) there ya go.
:Here is a test I did for a newgrounder who wanted my input on using the Akai Pro EIE 16bit model. Ukulele is a cordoba electro acoustic tenor. Recording software is Sonar X1. eleasped recording time is like ~20minutes. Driver is Asio4All.
:No preamp, no effects added, no hardlimiting, pure device -&rt; application without edit
:Basically, I'm really lazy -- and am just messin around -- so no compression, no goodness, no editing, most of it is left channel only which I will explain later, so deal with it. It is both a hardware and software test because I do not know how to Sonar.
:1) Ukulele - through powered internal piezo pickup 100% volume - high treble, med bass - ch1 gain 90% - mono on box, left on sonar - Asio4All driver
:3) Ukulele - through powered internal piezo pickup 100% volume- low treble, low bass - ch1 gain 75% - mono on box, left on sonar - Asio4all driver
:4) Ukulele - through powered internal piezo pickup 75% volume - med treble, med bass - ch1 gain 85% - mono on box, left on sonar - Asio4All driver Phantom Power off
:5) Ukulele - through fantom external pieze pickup, no volume control - no balance controls - ch1 gain 95% - mono on box, right on sonar - Phantom Power on.
:6) Ukulele - internal on L channel on test 4 settings, external on right with test 5 settings. Phantom Power on.
:Ok so here are my notes. The gain controls on each channel on the EIE are tempermental in that 80% is much softer than 90%. For most limited power or non-power operations -- mics, guitars, etc -- that you are running off of phantom power (+48V) you will be in this land.
:It splits 1/2 on left and right automatically. if you set it to be mono (blended) on the front switch, it will still split on the usb. However, on most daws you can just set one audio channel as mono and direct it from the "usb device 1 - left input" which is channel 1.
:Do not leave phantom power on any non connected channels, so if there is nothing in channels 3/4 turn it off. It will get rid of any noise. Headphone and master volumes seem to only matter to the output channels in the back. Keep monitor knob centered for the most part, unless you want to cut out most of either your computer or the inputs. I kept mine on "out" to hear my computer monitoring only and limit echo feedback.
:It powered my non-powered pickup fairly well. The noise you hear in the right channel is the pick up itself, not the device -- it is a PoS pickup, so no worries.
:I reccommend this recorder. I enjoy it and with a little love it packs a good punch. I might run a preamp or mixer before it for the sake of quality control, but for the most part Device - &rt; daw is fully functional to me.
:Next, if anyone wants it, I will record with a dynamic and some condenser mics in a limited space on acoustic instruments and voice to test. For now, though, this is what you get.