For an on the cheap "disposable" unit we took this all in one approach from Behringer.
We primarily storm chase and needed a simple console and this little feature packed unit fit the bill.
Even including 48v Phantom power.
I only reference "disposable" due to the fact in our line of work audio equipment and water don't mix (pun)

http://www.behringer.com/EN/Products/QX1204USB.aspx

From my experience as a audio sound engineer I would have to say that in a "fixed" studio environment I would definitely pop the anvil case front off my rack of DBX compressors!