Quicksilver Contact Enhancer

I've done a lot of experimenting with the Quicksilver, yes, it does sound brighter at first but over the long run the brightness disappears. Over long term use I've noticed no changes in tonality.
Some might say I'm just getting used to the added brightness. I doubt that is the case because I've done tons of tweaks over the years, some have remained, some have gone. Sometimes I can even be fooled for a few weeks, perhaps even months, but in the long term I do hear the pros and cons. Quicksilver has remained in my system for well over a year now. As usual YMMV.

The same thing happened to me and I called the owner Brian Kyle.. He stated at around the 3 week period things will settle down.. Sure enough my limited patience was rewarded by smoother highs, tighter bass, smoother midrange larger soundstage, and three dimensional sounding then before...Almost sounds like a cable upgrade but its not..
FYI I have had his Quicksilver contact enhancer for over one year and I have felt no need to switch back to the lesser products that I have indeed tried and within a month later sent them back for a refund..

FYI, Jena Labs warns against using it due to possible shorting out problems.

http://www.jenalabs.com/info/metalic-warning.html

I've had the Quicksilver and Quicksilver Gold for years now. Initial impression is brightness but once things settled, my system became more transparent and revealing. I have not observed any uncalled for brightness or fatigue after the burn-in period. If you have not tried it, I would strongly encourage you try this on your cable feed, video cables and such. The effect on video is more dramatic and for the better from the start--amazing.

I also use the Q.S Gold and found it to be mandatory in my system ( without it I can hear a loss of resolution and a slight harshness to the sound).To say that QS is causing a brightness is misleading yourself because you are hearing your system for the first time without the addition of the micro-arcing between the contact points! I have used the QS on my HDMI DVD cables ( 3-d images that you could touch) to a startling result and on my Mercedes ignition cap and plugs ( smoother power and great mileage).I have further treated all my power supply cables inside my Wadias and fuses and power outlets and circuit breakers.It really does take 3 weeks to settle in and is well worth the wait time!!Hope this helps Dennis