Bridging two push pull power PCBs help!

Hey Y'all,

I’m currently buying components for a KT100 run power amp, which I will have someone else build due to my non qualifications with tube / high voltage technology. However, I still want to buy all of the components necessary for him to build it, while learning how the parts I’m buying work. I’ve recently settled on a couple stereo push pull pcbs (I haven’t decided which I’m buying yet), that are able to be bridged from two 80w+80w channels, to one 160w channel.What was wondering if is if it would be possible to take it a step even further...Would it be possible for me to buy two copies of whichever PCB i chose, and have the two bridged channels bridged again, combining the two 160w pcbs into channels into one 320w channel?

Here are the two PCBs I wanna buy…

Williamson push-pull Amplifier circuit board For 12AX7/12AU7/EL34/KT88/6P3/6L6 | eBay

Stereo Push-pull 12AX7+12AU7+EL34 Vacuum Tube Power Amplifier Board Bare PCB AMP | eBay


Anything helps!
 
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That is really expensive for a bare board, and you don't even know the circuit schematic. There are many well known
and tested circuits that would be more likely to work well. I would urge you to reconsider trying to go "high power" with
a tube amplifier. A 100W amplifier is only 3dB louder on peaks than a 50W amp. If you have a very inefficient speaker
that you want to play very loudly, solid state is much more suitable. Bridging a tube amplifier (which only works once,
and even then not so well) is seldom done. Which speakers would this be for?
 
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It is possible to input balanced signals into the two channels of a tube transformer output
stereo amplifier, for a mono output to an 8 ohm speaker, which is connected between the
two 4 ohm taps. Some amplifiers may not be compatible with, or work well with, such a
connection.

It is more common to parallel the outputs of the two channels of a tube transformer output
stereo amplifier, for twice the power. The two 16 ohm outputs would be paralleled for use
with an 8 ohm load, for example. Both channels would receive exactly the same input signal.
Some amplifiers may not be compatible with this connection.
 
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