Anyone HEARD the qol 'signal completion' device?

I've been reading this thread with some interest; especially after reading Robert Harley's review recently. I've been curious about adding room 'tweaks', either the Syergistic Research ART system of bowls on wood blocks; the Stein music harmonizer system, or this product...seems like they all have supporters, but only have funds for one of them. How sensitive is this device to interconnect cables? In other words; have you used identical quality cables from pre-amp to amp; and added identical set for the qol device? Does it reflect different quality or brands of IC's, or is it pretty immune to cable influence? Same with power cords? I'm just thinking about the total price of admission to this dance; $4k for the device; $500-$800 for quality balanced 1 m IC's; and $400 for a power cord; makes it as much as a new DAC, or component. If I jump; I'll probably place it between preamp(tubed VAC) and solid state mono blocks...any issues with impediance matching? Thanks. Looking forward to hear from other people's experience...as I have problems in my room itself; that this might help solve.

I heard the QOL device today while visiting with Dave Weinhart; of Weinhart Design in Los Angels; he had it after his EAR pre; and hooked up to EAR tubed amps; driving Magico M5's; source was Sooloos server running thru Star-tech dac, and I brought my own familiar music; and engaged the QOL on and off at my request.
I was an initial skeptic; but now I'm a convert; with this uber system; the sonic depth; detail, staging, decay, and 'meat on bones' improvement was not subtle. I plan on placing an order; that's how certain that what I was experiencing was real; and would help me enjoy the music in my own home system even more. While on one hand it does strike people as 'snake oil', or simply pressing the loudness button of an old stereo; it does make a significant sonic improvement; without causing harm; at least to my ears. I guess I echo the glowing endorsements of folks who have actually heard one. It would be nice if the price of admission went down; but I am now a believer.