[Amps] Cary LK-800 vs Amp Supply Co. LK-800A?

[jmaass at columbus.rr.com (Jeff Maass)]

I have been looking through an old Amp Supply catalog, looking at
the LK-800A, an amplifier using three 3CX800A7 triodes. We have 
a Cary LK-800 at PJ2T. They look like very similar amplifiers, with
some differences in the front panel.

Are they cousins? Brothers? 

How do they differ? 

Which came first?

I think Denny Had was involved with both Amp Supply and 
Cary Audio (which makes tube-type audio amplifiers).

73,
     Jeff Maass  K8ND

     Caribbean Contesting Consortium - PJ2T
                       http://www.pj2t.org 
 http://home.columbus.rr.com/jmaass/Radio/PJ2T_Aerial.htm