Walker EST Silver treatment?

Mike, great caution about care in applying a silver contact enhancer. One nice thing about the Walker E-SST/SST versus others on the market, however, is that SST's carrier fluid dries and, as a result, SST does not migrate (this is not to say that is can't flake when applied too generously). The challenge, of course, is to apply only a very thin coating and make sure the applicator doesn't accidentally "wander" where you don't intend to apply it. It is highly conductive.

"i would very strongly caution that SST be used very carefully."

Arafel, I use Walker Audio's Extreme SST and consider it an essential part of my system set-up. It really does work. But, the best way to determine if it will make a material difference for you is to try some in your own system. If it doesn't work for you, Walker Audio offers a refund if you return the unused portion within 30-days.

If you search the archives you should find quite a few comments about using E-SST/SST. Here's a link to a post about our experience with Extreme SST, and the post contains links to several reviews elsewhere:
http://forum.audiogon.com/cgi-bin/fr.pl?ymisc&1101694286

http://www.walkeraudio.com/sst.htm
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George, there is no need to re-apply unless you disconnect. The effect of the treatment does not "fade" over time as long as not disconnected. While the instructions do say you may connect and re-connect multiple times (as John points out), pay attention to what you hear. Sometimes you do need to re-apply upon disconnecting/re-connecting. Lloyd has updated his instructions as follows:

"Before reconnecting, it is beneficial to take a used applicator with the SST wiped off (some will still be embedded in the applicator) and spread over the connector. This will help to distribute the SST that remains on the connector. If you reapply it, make sure there is not excessive SST on the connector. If there is, clean it as directed above before applying more." http://www.walkeraudio.com/sst.htm