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Clayton Audio Class A

Just curious: are there many amplifiers out there that use a balanced bridged class A design like Clayton Audio?
For both the M300’s and the single box version S2000, Wilson uses two class A 75 watt amplifiers in bridged design per channel. Just haven’t seen that topology spoken of much. They do sound quite good. Would love to learn more about this topology. I know it allows larger class A wattage outputs but still surprised that bridged designs double down. (300 into 8/600 into 4). Thanks for your thoughts about balanced bridged class A topology.
audiobrian
audiobrian OP
186 posts
 
Thanks roberjerman. Good to know that about the earliest Adcom design. I wonder if there are any other balanced bridged class A designs on the market?
tecknik
486 posts
 
Accuphase Class A amps do as well. 8ohm 60w, 4ohm 120w, 2ohm 240w, 1 ohm 480w. Bridged mode, 8ohm 240w, 4ohm 480w, 2ohm 960w.

Accuphase has serious power.


audiobrian OP
186 posts
 
Thanks technik; Accuphase is serious power class A!  I guess what was confusing me about the Clayton S-2000 is that it is a single chassis dual mono class A design with each channel already bridged. (2 x 75 watt class A amplifiers per side)for output of 300 wpc class A into 8/600 into 4.  Essentially two monophonic bridged amps in one chassis.
roberjerman
4,319 posts
 
I doubt that the Accuphase amps are of the dual-bridged design. This particular design does have a problem with low impedances. Too much current draw - too much heat from the output stages! That's why Adcom abandoned it after the GFA-1 and went back to conventional class AB output stages.Without that cooling fan it would overheat and shut down!
tecknik
486 posts
 
Check out the Accuphase website roberjerman, I could be wrong but those are the number posted and I have the A65, granted in stereo mode only due to available funds to get a second one but stereo mode for 60 watts of class a has serious power.
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