^^ I would even go one step further, and say that you don't need a preamp at all -- if the recorder is good. For condenser mics in rock clubs, you can do fine with Edirol R09 or similar. For condensor mics in ambient settings, the Sony PCM D50 or M10 work great. So, the main issue is getting battery or phantom power, depending on the mic. The simplest setup I used for recording live shows is a custom made battery box (two 9V batteries to give 18V, 2k resistors) powering a set of Beyerdynamic MC930 into an Edirol R09 recorder. A step-up phantom power supply would work as well.
Richard