I need some advice from anyone willing to help. Just found this amp on Ebay. Does anyone know if this is a good amp? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2522997064&category=4713 I need a fairly powerful amp that will last awhile and make some noise. One that is good for playing small shows. (is a 12" enough?) The guy has like 45 of them for sale (all Buy it Now's). Here are the Specs: It is a Johnson Stage 100B. 90 Watts Peak 60 Watts RMS 88 Watts Consumption 12"Woofer 2" Tweeter 4-Band EQ with Parametric Mids Tweeter On/Off Switch Two Channels with Independent Levels 1/4" Line Out Thanks for any help.