Know anything about the BSG Technologies QOL?

I would agree with all about having a good power cord. As usual, anything in the analogue mode picks up interference. The "loss of clarity" occasionally mentioned, I think, is the removal of that etched quality found in many studio recordings. What the Qol does is create a sense of air around the instruments and voices. I would be interested in feedback from anyone using full range electrostatic speakers in the system. With my big Sound Labs I can finally appreciate the true accuracy of sound, along with a sense of liveness. Because my listening area is so big (75 ft. total), I have back channels (some 25 ft. behind listener). I have them fed also with the Qol. Using an Audio Research SPD1 for the rear, the out of phase information is more realistically conveyed. I also think that with the Qol it is easier to reproduce real concert levels (I am talking about real, classical music concerts where the sound comes only from instruments and voices without sound reinforcement ala rock and other pop).

BTW guys where do you have the Qol installed ? Before or after the Preamp. In our situation it is after the preamp since we use a Phono/pre combo.
At first qol was to be installed before the Preamp, then an addendum was issued by BSG suggesting after the preamp.
BTW it likes footers as well. Using ebony cones with great affect. So experiment away dear chaps and always have fun doing so.

Ok here are our findings about Qol. It takes 500 hours to sound its best. That is when we detected so more changing of sound. Around 500 not exactly. Powercords do make a difference as well as power correction devices[ Uberbuss ].
Footers too contribute to more focused bass and tighter images. not to say as is is bad, just that with better.
We have tried, Ebony cones, Soundfusion, Pon -tunes, Ayre wood blocks and brass cones so far [ we like the Ayre blocks ]. All different results. realy is system dependant. Basically a tone control footer wise.
Let ya know how the "supreme" HIFI Tuning fuse works out for us. last but not least , leave it on 24/7 makes a difference.

I concur with everything Pipedream says. My unit has been used over 600 hours, and it is finally smoothed out (I leave the unit on 24/7 and have used the Isotek burn in CD a few times over the period). One last thing: using the XLR output for the main channels also really helps, especially if the source-to preamp and preamp to amp connections are balanced. Since my whole front end is on an isolated platform, a setup like that improves the sound of any component. An added bonus is when you use a classic, analogue FM tuner like the McIntosh MR 78 or Marantz 10B tube tuner as a source. I am sure the result is euphonic, but addicting.

Hey guys if you are using the Qol after the preamp, please try after source instead. Since I do not have a dedicated phonostage we placed the Qol after the preamp.
A buddy brought over his phonostage so we decided to listen both ways. We really liked the presentaion after the source.
I will keep our findings secret until you try and tell us what you hear.
Received the fuse a HiFI Tuning supreme. Expensive little sucker, but man O man it does make a difference for the good.
Balanced if you can will also add to the pleasure. also if you have the original version before the top cover change, dampen the top cover inside with either 3M sheets or dynamat.
Have fun trying and report back.