Quadraphonic records (LPs to you and me)

@tatyana69 

You Bryston has nothing to do with Quadraphonic Descrete-4 records. In fact your Bryston designed for Digital Audio (Dolby Surround) in Home Theater application. 

To play records you need just normal stereo (Left and Right channel). 

Quadraphonic Records (Descrete-4 or CD-4) require special cartridge and special processor, also 4 speakers. You can learn more about it here https://en.wikipedia.org/wiki/Compatible_Discrete_4   

@tatyana69

The Bryston very successfully codes 2 channel into 7.1.
I never play analogue into stereo

Why do you need 7.1 if you’re playin’ stereo vinyl at home ?

Proper stereo set-up reproduce holiographic 3D imaging and this is all about analog, you don’t need another speaker on the back of your chair and additional side speakers to play stereo vinyl.

If you playing 2 channel stereo via home theater 7.1 setup then i don’t know what you’re actually listening to, but definitely not what is on the record (mixed and mastered for 2 channel stereo in the studio). The sound/mastering angineer has just Left + Right monitors in front of him. 

When you decodes 2 channel to 7.1 how come it can be better than just Left + Right if the recordning was made for Stereo?