Does the break-in times you note include music going through the Puron or just being plugged in and "on."
The Nordost QV2 and QK1 work better together than either by itself, and work optimally in a two QV2 to one QK1 ratio. Contrary to the test above most reviewers have found the QV2 to make the bigger relative impact, and that is what I have experienced. I have three High Fidelity MC-0.5's which do very little as far as I can tell - not sure I'll keep them. I also use an Akiko Triple AC Enhancer, two QK1's, and most recently the Puron - all on a short cord power strip plugged into the same wall duplex as my power conditioner (1st photo). This power strip is attached to the wall via a three socket dongle that also holds two Furutech Clear Lines (2nd photo). I have four QV2's plugged directly into spare sockets in the Bybee Stealth power conditioner (3rd photo). For me the Puron works better in the power strip than directly in the power conditioner, and the QV2's work better plugged directly into the power conditioner. My last addition, the Puron, made a subtle improvement in instrumental textures, delineation of individual notes within the musical whole, and overall clarity. Added most recently before the Puron, the Furutech Clear Lines subtly improved soundstage depth and image delineation. The Akiko Triple AC Enhancer subtly lowered residual treble brightness/etch/glare. The QV2/QK1 combo reduced residual sibilance and electronic signature and provided more lithe and tuneful bass. None of these devices produced more than subtle improvements in my system but taken together the result is more relaxed, and natural sound with improved texture and image "pop" without pulling the musical fabric apart to spotlight particular frequency bands. Except for the Puron, which I just added, I have pulled them out and put them back one at a time to verify their contribution and lack of downside. Too soon to tell how the Puron ranks in effectiveness against the other plug-ins.
Have you tried two Purons on the same line (i.e., plugged into the same AC outlet)? If so what was the difference compared to a single Puron?
More is better. Just don't expect the results to double. Expect a linear decline in thee amount of improvement.. The negative attributes will increase.
I am using just one filter(iFi Audio on my USB. Rumor is there are those using multiple stacks. It is sort of like Tylenol. If tow is good, then a handful and a beer is better.(dont do that).
Oh please do not mix beer with Tylenol it is so bad for your liver!. Bu I get what you are saying.
As with drugs (my doctor recommended taking Tylenol and Motrin together for back pain) some mixtures work and some don't; a couple of pills is good but a handful is too many. Experimentation will reveal the optimum number and mix of noise filters. In my system two Purons are better than but not twice as good as one. Their value is cumulative when used with my four Nordost QV2/two QK1 combo, single Akiko Triple AC Enhancer, and Lessloss Firewall CMARC 640X. Ditched the High Fidelity MC-0.5's which I hear no audible benefit from as part of this grouping.
