Comparing Two Pairs of Mono's

Yes both the 7B and 8B are true mono block amps. They have a very high slew rate, one of the highest in the industry.

Are Bryston monoblocks true/dedicated mono amps?

If they are not true mono block amplifiers then again your point is well founded.

Sorry charles you asked , here is a Stratos monoblock bridged. https://ibb.co/VVtFCsq
(misprint the L&R bridging strap is output not input)

Here is the Stratos wired in stereo https://ibb.co/fSShKFn


Cheers George

I had the Karthago and later Kismet monos. I bought the monos after I heard KEF driving their Muons at CAF with them. They are good sounding amps for the price and come with a 20 year warranty. Klaus’s systems generally sound excellent at audio shows. I still have his Kismet speakers. No experience with AVA.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://odysseyaudio.com/stratos-mo...
@georgehifi,
This is what I am referring to. If they are not true mono block amplifiers then again your point is well founded.
Charles

Odyssey does cite their mono blocks are stable with a 2 ohm impedance load.

Not the ones I've seen Charles, he may have a true non bridged monoblocks model I haven't seen yet. They are easy to spot if you see inside.
Cheers George

OP: there are many active threads related to both brands over on AudioCircle.  I recommend you take a look around there.

I am not very familiar with this brand but Odyssey does cite their mono blocks are stable with a 2 ohm impedance load. Although I don't know the claimed power or current into that low impedance. 
Charles

George, 
Good to clarify true mono block amplifiers compared to  bridged stereo amplifiers.  It is a meaningful distinction that some may not be aware of. 
Charles 

They are both just bridged stereo amps, I wouldn’t do either.
Only thing improved is wattage when you bridge a stereo amp, everything else take a hit, especially stability into low impedance speakers.

Go with true monoblocks of something else.
EG: used Parasound Halo JC1 monoblocks and they have high or low Class-A bias for serious or non serious listening.
https://www.ebay.com/itm/274899124769?hash=item400143c221:g:YukAAOSwSJNhEiIC

Cheers George

Buddy just sold off Pass Monos for the AVAs 225 sound.

I saw Klaus in operation a few years back at CAF. Didn't care for the style, YMMV.  Prefer the mom 'n' pop vibe of AVA.  Bought the M225's, and they're excellent.