Anyone HEARD the qol 'signal completion' device?

Csontos, I doubt if it is similair. It looks like BSG has just been granted a patten on their design.

I just had an opportunity to bring home a unit for an audition in my system and I tend to agree with most of the pros and cons discussed so far in this thread. And for me, to my ears, the cons add up to more than the pros. So, I returned the loan unit to the dealer.
The one most important aspect of the sound that deterred me from an outright purchase was the unrealistic expansion of image size of every instrument. Although the soundstage has expanded, so too have the piano, guitar, saxophone, violins and whatever else that is playing together in a band or orchestra to the point that each of them seems to extend from the far side of the left to the far side of the right of my room boundaries. May be seductive initially but it just doesn't sound real and right.

Jon2020,
This is an interesting observation -- one that I had not heard before. Since I live overseas, taking their 30-day trial could get complicated -- and expensive, with all the back and forth shipping. Based on what you have to say, the QOL does not sound like it has the sonic attributes that would take my system where I want it to go. I was curious about the QOL but I will not let my interest go any further.

Sabai,
Going by your previous postings in the thread, I would surmise that your system is pretty high end and resolving. That said, you may also like to know other aspects of my personal experience with the qol :-
1) The S/N ratio is indeed rather low as previously posted; I can hear more hiss and noise from my speakers in between tracks and during soft passages. With the qol out of the chain, the added noise was gone
2} When I cranked up the volume with the qol in place, there is a point where distortion can be easily heard and things start to sound ragged
3) Image size is quite stretched to the point of unbelievability. A glaring example is when the tenor sax is playing, it is as if I am standing at the "cusp of the crucible" so to speak, staring down into the deep belly of the sax - totally unreal
4) The bypass mode is not a true absolute bypass. Remove the qol from the chain altogether and the comparison is startling - one gets easily seduced by the immediate signal gain and think, ah, instruments have more body but take it out of the chain, and gradually crank up your system. You will realise a similar gain in instrument body but without the image stretching effect

From the patents posted previously, it would seem that the qol is an analog equaliser preamp with some gain that manipulates the left and right signals in an out-of-phase sort of way that expands the soundstage and instrument images in a very significant way. And this, to my ears and in my system, is to an unbearable degree.
But to be fair to everyone, you pay for whatever floats your boat. If you like the sound, enjoy. If not, return it. And there will be peace all round in this most peaceful of hobbies.

Jon2020,
Yes, my system is very resolving and has reached a level of continuity and holography that I really never thought it would reach.

Thank you for your observations. I find them very informative. In fact, they are so detailed that I wonder why they have never been reported in similar way before. Is no one else hearing what you are reporting here? Are your observations specific only to your system?

The only reports I have read about the QOL are either glowing ones -- with few specifics -- or vaguely negative ones where the individual decided to return the QOL.