Well I sold my aguilar AG500 to fund the purchase of an AVALON VT-737sp and last night was my first gig without it. The Avalon is on the way now. I used my ampeg SVP-BSP preamp with a Raven labs TBeq throug my avatar b210's. Well.....life without the AG500 sucks ass! There is nothing better for a live rockband in my opinion than the aguilar. The setup with the ampeg and eq where ok but, the tightness and feel just wasn't there no matter what I did. If the Avalon turns out to be not what I was looking for, I am buying a new AG500 pronto! Hopefully the the new preamp will be here before our next 2 gigs this upcoming weekend. Also, I found the the aguilar solid state head was much more forgiving of dead strings than the ampeg. I found this to be true of aguilar's other tube gear also. (not as forgiving) If anyone has used both the Ag500 and the avalon 737, I would very much appreciate your opinions. Can I get the same sort of tone but, maybe even better out of the Avalon? Or, is the avalon a big, loose, tube sound? I need some comforting here folks. God I feel sick.