I was just wondering if it's good for recording concerts.
http://www.gracedesign.com/products/m201/m201.htm
(http://www.gracedesign.com/products/m201/pics/m201AD_workfile.jpg)
Sure, as long as you could plug it into an outlet :-)
Not sure how you would run it in the field for what we do.
For people that want/like the Grace sound and portability, the Grace Design Lunatec V2[just an analog preamp], and the Lunatec V3[analog preamps + ADC], are pretty easy to find used for good deals, and very easy to power, especially compared to the m201 above lol ;)