I guess I should check in here more often. I thought my thread was done in September. Thanks to all of you have responded here in November with some really helpful information and suggestions.
Ferenc, your comment on the Altmann amp is truly interesting. You're the first person I've seen report using the Altmann, and that you like it with the Trio tells me you are a man who listens and doesn't give one whit about the cosmetics of your amplification devices. I am also curious about your use of the REL Stentor II sub. I assume you have replaced the AG woofers, is that correct? Are you using one or two RELs? If so, at what frequency are you crossing into the REL? I didn't think the REL was able to go up high enough in frequency to mate with the Trio's lower mid horn.
711 smilin, the Mactone sounds very interesting as well, but given the inability to audition one with the Trios along with their cost, it probably isn't going to happen.
Atmasphere, it seems to me that you are saying that neither SETs nor solid state amps work properly with the AG Trios due to the Capacitors in the crossovers. Don't most speakers with crossovers use capacitors? Your comments seem to conflict with all the results of others who report very fine results with SETs and now Ferenc stating he is getting fabulous results with the Altmann amp, which to my knowledge (correct me if I am wrong) doesn't use any feedback just like most of the SETs that others have found favor with. Yet you claim that an amplifier with feedback is required in order to achieve proper results. It does make one wonder.