Faster alternative to the ASR Emitter?

Swapping opamps is only slightly more challenging than changing fuses.

It does not seem credible that one would add a ground wire without recalling the reason for doing so. As Casouza is a self-professed 15 year compulsive tweaker, I might venture that there was in fact no verifiable reason to have done so.

I don't own an ASR and I have no experience with Burson opamps.

What I do have direct experience with is:

- I generally have preferred discrete output stages to opamps. So if I were game for rolling opamps, I would certainly consider what Burson, Dexa and Audio GD call "discrete opamps".

- I have indeed swapped opamps before and it's sort of a YMMV thing. But a number of various opamps are available for $20, $50, $100. And in a hobby where a cotton covered cable costs $1000, and people shell out hundreds for a power cord, I think opamp rolling is one tweak which is quite high value by comparison.