Capacitor-less amps

"There is some confusion: "in the signal path" means in series."
I agree; that's the definition I always understood.

"Decoupling capacitors are in the signal path."
'Decoupling' usually means a relatively small cap from DC power to ground that isolates one part of the powersuppply 'line' from the next. Decouplers are NOT in series so are not in the signal path. Did you mean COUPLERS?

"Parallel caps are fine and necessary - cleans up the signal which everyone likes."
You'll have to be more specific for me to understand what you mean.
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Yes, you are correct - I meant coupling caps and not decoupling. The input coupling cap is generally the one in the signal path.

Decoupling caps are from power to ground (parallel to the power supply reservoir caps) to remove radio frequency components - hence cleaning up the sound. the power supply caps, being much larger in size, remove the ripple to clean the sound of those frequencies.

Aball...Yep. I don't know what I was thinking. I guess that the point I was making is that the PS capacitors are such huge values, compared with coupling capacitors, that they would look like a short circuit to an audio signal.

This is a forum where people will argue that different types of "wire" will each have their own sonic signature. Yes a large PS cap will look like a short circuit to an audio signal. Will it also impart it's "sonic signature" to that audio signal when it passes through? You bet'cha.

John_tracy...But it doesn't pass through it.