We just got in two choices in used AVA amps that might interest you. They are not on our used equip page at our web site yet.
A recent Synergy 240 amp built in a decent Dyna ST-150 chassis. Circuits are perfect, old Dyna chassis has seen better days, has dent in faceplate and a few scuffs. Asking $545 including 30 day satisfaction guarantee and one year parts and labor warranty.
An nice Fet Valve 400R hybrid amplifier. This was an upgrade to an older version of this amp so it has a captive power cord. Asking $1245 including 30 day satisfaction guarantee and one year parts and labor warranty.
I have bench tested and run both in my system and they perform just fine.
Call me at 651-330-9871 if you are interested.
Frank Van Alstine