Re: SM57 recording info
by XLR you mean XLR to 3.5mm, then that depends on how good ur motherboard/sound card is. I got a fairly good latency time with my motherboard (Gigabyte EX58-UD3R), which was about 6-8ms.
But this method is USUALLY very poor, most motherboards can't keep up and put out latencys of about 30-300ms latency. But using a different ASIO driver helps (ASIO4ALL is very good).
But after latency, the sound quality isn't all that bad, for a while i had the headphone jack of my Line 6 POD going straight into my motherboard and tweaking the settings on the POD did the trick nicely.
Now after saying ALL of that, i havn't come across any XLR-3.5mm jacks.
The USBx2u sounds like a very good idea, and it's made for microphones and shure is a very well trusted company. I Havn't tried it, but i wouldn't think they would put out an adapter that was unusable. So the chances are, the X2U will sound clear and have a low latency through ur USB posts. Surely there's people on youtube who have done recordings with it.
The next step up for latency and sound quality is firewire, but that's when **** starts getting expensive.
A good recording tool i've seen (and i've used my friends one) is the Line6 Toneport UX2 (or summin like that). That's made for guitar and you can plug in a mic, or plug ur guitar straight in and use thier modelling software. It sounds good and is really cheap (cause it's a USB interface)
Hope something from this monster post helps you out on your way.