Yep, the Acurus amps sound very similar and can be bought rather inexpensively nowadays. I had a multi-channel Acurus and it was a beastf an amp.
I have also had a Butler hybrid (tube/MOSFET) amp that I really, really liked. It has that signature tube sweetness mated to the high current ballsiness of a MOSFET amp. Keep your eye out for a Butler TDB-2250 here, they can usually be found for right around $1500. These are *fabulous* amps and will drive your Acoustats with real authority!
http://butleraudio.com/tdb2250.php
Good luck!
-RW-
I have also had a Butler hybrid (tube/MOSFET) amp that I really, really liked. It has that signature tube sweetness mated to the high current ballsiness of a MOSFET amp. Keep your eye out for a Butler TDB-2250 here, they can usually be found for right around $1500. These are *fabulous* amps and will drive your Acoustats with real authority!
http://butleraudio.com/tdb2250.php
Good luck!
-RW-