Check this out, heard of Altmann Tube-o-Lator ??

I ran into this site and figured Audiogoners might be interested, since we're discussing tweaks, upgrades and the likes in our quest for........well........you know.
A simple, brush-on, laquer-based coating applied to specific electronic components on circuit boards.
Supposed to work wonders for D/A's, Preamps, Amps etc., provides a warm, musical, natural sound when cured.
I'm gonna try it out, what the heck. It's removable if you wish, comes in a small vial, costs about $55 bucks.
Here's the link: www.altmann.haan.de/tubeolator/default.htm