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Originally posted by Mark_H:
Whenever I try to assess these tweaks I always try to set up parallel systems so that I can switch live between them and hear the changes - that way I don't have to rely on subjective short term memory.
Me too -- particularly among things that are going to be subtle, that you probably have to 'listen for'. I'm skeptical of sense memory under these conditions -- too many variables for our minds to play with and affect judgement. I'm even more skeptical of claims that the sound is 'transformed' by this or that tweak. As has been pointed out, Bob Stuart and the folks @ M aren't dummies; they'd spend the extra $50 or whatever and go through the necessary approvals. C'mon, who else spends the time to write their own code?

Having said that, as a G68 owner, I'd love to A/B modded vs. stock.