Difference: Cary SLI80 Signature vs non-signature?


What are the different between Cary SLI80 Signature and non-signature? which is newer model? Cary website is still selling the non-signature version, does it mean the signature version are the limited edition? which is better?
thx...
audiorichard
I know F1 version is the best of three, but it is out of my budget. Mike, can you give me some detail of the non-signature and signature?
what Cary sells now & has for some time is the signature version. the non-signature version did not have 4/8 ohm switches, triode/ultralinear switches or headphone output & also had a chrome deck. this info is from an old thread on audioasylum I read years ago. you may want to email or call Cary to confirm.
Oh great, that is the information I need. Thank you so much for your help. Pehare!!!