[LAU] USB audio interface support?

[Lorenzo]

Hi,

> 1) How much gain is needed by the Shure SM57 for comfortable recording
> with a low noise floor?
> 2) Whether the M-Audio Fast Track Pro, Tascam US-144, Alesis IO|2 or
> Edirol UA-4FX are able to provide pre-amping with that much gain?
>   
I'm not sure I understand correctly the question...
As for 'noise floor' much for example depends on the input signal, 
environment etc. or are you talking about the intrinsic 'noisiness' of 
pre-amps on the cited devices?. Maybe if you explain the situation/setup 
one could have a clearer picture.
Anyway, because the SM57 is a dynamic microphone you should be ok with 
virtually any decent mic preamp: at an extreme limit you could probably 
even plug it into your computer's "mic in" (but then of course might as 
well use a 10$ skype microphone or something :) ).

Lorenzo.