Not that you're probably interested any longer, but I believe the main difference to be the use of discreet transistors in the phono and line stage of the AGI 511A in place of the op-amps used in the phono and line stage of the original 511.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.
