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Differential Balanced Sound Quality

I've read where running a true balanced (differential) amplifier as such sounds much better than running it single ended (I'm assuming the same amp has both balanced and single ended inputs here).

Why would that be the case? Is it merely the improved SN ratio, etc. from being balanced, or is it something circuit related with running each channel's plus and minus through separate amplification stages?
greg7
pragmasi
212 posts
 
I apologize if you see this as being patronized, that was not my intent!
Cool... no problem.
Take a look at the first hit (this is an images search). The first image shows both what you’ve described **and** what I described in the same image, the latter of which does not have the Johnson noise issue.
Absolutely, agreed... I was talking about the topology shown in the first image.
IME the statement is only true if opamps are used *and* the internal circuitry is single-ended
Yep... op amps are the usual way of doing it and that's what I was talking about.

BTW love the look of your amps and I can see the passion you put into them.


cal3713's avatar
cal3713
1,421 posts
 
Thanks for all the discussion folks.  It's always nice to read a thread that actually educates, or at least presents the opportunity...
oldears
386 posts
 
For those of you who might be technically less adroit, I suggest to search for "pints with Ayre" and listen to why balanced is one of their design constructs (along with "no op-amps", zero feedback, etc).
jwl244
64 posts
 
Thanks everybody I feel like this thread should be a sticky. I'm learning a lot and also being confused by a lot of this high level discussion!
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