What is the best mod for a Sony SCD-1


I have mostly Sony ES products.
aolterrance
That's simple, take a look at the following review...
"Tube Research Labs" MOD is one of the best, most affordable, and effective approaches you can get.

http://www.6moons.com/audioreviews/stephstuffers/stuffers.html

having had both the kern mods..almost the full mod..and the vse mods the vse mods ..imo..give the better sonics by far..others may believe otherwise.