Anyone HEARD the qol 'signal completion' device?

Ron, although people do debate whether the effect is a good or a bad thing, it does seem to be a very noticeable one, certainly when trying at least 2 or 3 recordings. In my system I hear a lot of out of phase ambiance which makes it sound like I am more enveloped in the music. A bit like listening to an out of phase signal whilst still listening to the in phase signal. You can rarely miss that effect. The stage gains about 2 feet in a stage that is otherwise 13ft or so. Again very noticeable. I also find that what people call forward is actually a diminution of depth and an increase in the size of individual instruments. Instruments do sound more illuminated from within (as RH said) but that is at the cost of loss of imaging and positioning accuracy. When I did a simple sweep I got a 2db difference across the spectrum but consistently. In different recordings however I get perceived differences as much as 5db estimated. Results do indeed vary with recordings, quite substantially. The usual reaction of seasoned audiophiles is WOW this sounds better, wow etc etc. After about 3 or 4 tracks people lose that initial enthusiasm and become more critical about the issues I mentioned. I completely understand why people with less resolving systems may not suffer from that and I also understand the enthusiasm given the magnitude of the effect. My system is also not limited by cost (you can see it here on audiogon) so I pretty much know when my neighbor is shaving. In my case, I didnt go further in my auditioning to compare dynamics etc. The loss of imaging is a big deal for me. Plus a pair of Ypsilons just arrived and I am rather spending my time comparing them to my system instead...

In my response yesterday I may have sounded a little elitist when I stated that if you amp. preamp or speakers cost less then the Qol you would be better off spending your money elsewhere. I would like to clarify that. If you have an amp.preamp or speakers that you can sell for say $2K take that money, combine it with the $4K you were going to spend on the Qol & trade up. It is a buyers market & for 4-6K$ you could get some wonderful gear for that kind of money. In the 40+ plus years I have been in this wonderful hobby, I have constantly traded up.Like most of you I am not one of these 1% types that can just go out & purchase whatever I feel like.I trade up when it is an improvement & when I can afford it.With that out of the way, I would like to talk a little more about the Qol.What finally convinced me to purchase it was I spent a couple evenings just simply listening to music I knew very well.I ignored the bypas completely. Sometimes the Qol is not the most accurate sounding piece but most live performances have "errors' as well.What conviced me was the fact that in my system it has a very relaxed believable musicality to it.It gets me a little closer to being there. However one persons wine is another's vinegar. A wine I might call a fruit bomb somebody else might call a hedonostic delight. If you can afford one give the Qol a try and listen for yourself. Just because somebody may have a system that costs more then the average house & does not like it or they don't want to put another "filtering" cable in their system that is their opinion and they are entitled to it.The 30 day trial is very reasonable & will give you ample time to use the best sound testing device you have"your ears".

Dear Mihalis and Lwin, Thank you for your posts. At the suggestion of Pipedream, I installed the QOL after the source whereas before I had it between the pre-amp and amp. That one change has made a great difference in the overall presentation and enjoyment of the music. My amps, preamps are Ypsilon ( very resolving). So, any difference to the sound is very noticable. Yet, this QOL has changed the sound I think for the better. I haven't lost the resolution yet some "presence" is now apparent. Got just over 250hrs of breakin and ordered the Hi-fi supreme fuse. The jury is still out but now leaning slightly on keeping it. Have about 2 1/2 weeks to decide. I agree with both points of view about the merits of resolution and musicality. thanks Ron

I found I like it better after the source as well. Of course those with Integrated amps do not have a choice.

Interesting, I didn't try it after the source because I use both analogue and digital and wanted to avoid the extra switching. I wonder why that would make any difference if the claims of the manufacturer were accurate. The mystery continues!