Anyone HEARD the qol 'signal completion' device?


An ad in TAS... touting this box. I remain skeptical but would like to know what your impressions are if you have heard whatever it does!
128x128woodburger

Showing 8 responses by jon2020

Sabai,
Yes, my experience is specific only to my system which is likewise quite resolving. So, it may sound different in another system which may turn out to be a positive experience for the owner. As the cliche goes, to each his own.
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.
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.
213cobra,
Phil, your observations are spot on. Sometimes it may seem insensitive to call a spade a spade but in this hobby, where value is paramount before we part with our hard-earned money for an outright purchase, we just need to call it as it is. Benefitting the whole community is indeed the aim of such a forum and you have done so very well.
Every component will have its pros and cons and a balanced view is what all of us here need. I wince whenever I hear pure gushing without a single caveat. When Larry gives not a single caveat, it is only understandable, given his capacity as CEO of bsg tech. But dealers of the product would want to be balanced and more circumspect in their views because it is very unlikely they would want to sell anything else in their store without saying to a potential client, "Oh, by the way, you should take this box home too or else, whatever you are buying WON'T let you hear everything that you should." If a dealer says that with every source, pre-amp, power amp or speaker component that he is trying to sell, then his integrity does come into question a fair bit or worse, he might lose the sale altogether.
A good thing I observed from my local dealer of the qol is that at an audio show, he merely displayed it but did not hook it up with the other components on active display. I guess he did not want the qol to detract the listener from the intrinsic qualities of the separate components that he was exhibiting.
Regards. Jon.

Shakeydeal,
You are much applauded for your prescient statement above that it will be going for muuuuuuch less when the bottom falls out. Well. we all know what it is going for now - 40% less in a recent screamimg ad. Ouch!
Has anyone else tried the qol in their systems lately? It seems like this has gone off the radar for quite a while now.
Ozzy, I know you still like yours and I respect that. If it works well in your system, why not?