@blindjim Topology isn’t always the big deal with some amps, say tube amps for
example. There are tube monos running sE only. Very nice ones.
There
is a very good argument which paralelles this thread…. Fully
differentially balanced or single ended designs, which is best?
Cost
no object (C.N.O.) builds of either SE or XLR amps should have the
balanced amps doubling the costs of the SE amps provided both amps were
made . of identical parts as the XLR amps use effectively a twin SE
arrangement or twice the parts list essentially..
I can point to a number of issues that belie this comment:
Topology is actually a huge deal with many amps, especially tube amps. I've been trying to see how I might have misinterpreted your comment but I don't see how.
A cost no object (or even on a budget) balanced amp does not cost twice that of single-ended circuitry nor does it have twice the parts- that is a very common myth! I don't have to look very far to prove that out- most of our amps cost **less** than single-ended amps despite having greater power and performance (and yes they are full balanced and differential). Part of the reason for that is we don't have to pay for an output transformer, but even if we did, output transformers for push-pull amps are easier to build and thus less expensive.
So you can see that topology is huge.
