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In Reply to: RE: Listening impressions of Regen battery tweak posted by theob on November 27, 2015 at 09:52:51
"One other sonic improvement, and maybe its the reason for all the other sonic benefits, is transients now are much more distinct and not smeared."Yes, I find the realism of the soundstage is greatly improved - more solidity & distinctness to the individual elements. As you say the distinctness of the leading edge of sounds seems to be improved. It's always difficult to relate our auditory perception of elements such as these with underlying changes in the analogue waveform (as we see from the inconclusive measurements done so far on the Regen) but I believe that & more stable noise floor (& possibly a lower one) is responsible for the lack of any perception of smearing?
It's hard to believe that these perceptually OBVIOUS sonic improvements wouldn't be measureable, isn't it?
I'm hoping to send my battery modified Regen to Bibo01 & Tom to do NCD difference measurements but I'm still not holding my breath that conclusive differences will be found as noise floor stability (in the presence of dynamic signals) is not easy to measure, I believe.
Edits: 11/27/15Follow Ups:
Finally got just one Regen running by tapping into the little prong (that runs from the mobo to the top of the back of USB output connector ) for the 5v. And into the battery ground as you suggested. I used another Regen as the 5v source. Result was not as good as my initial 2 Regen configuration. Just to be clear I use a very expensive power cord into the 2nd Regen power source. Using a generic power cord makes the comparison closer. Sonic differences are (for the dual Regen) deeper depth, tighter bass more extension top and bottom, better inner detail and dynamics. Power cord is KK palladium or something like that. Retail value was something like $1k bought it when I was working and had more $ than diy skills. So there it is. Sorry to debunk the theory that 1 Regen is better than 2. It all depends on the individual power supply to the Regen 2nd one that is.
I've no problem being wrong but from what I understand of your setup you are running a 5V from your mobo to your DAC. It would not surprise me that this sounds worse than the previous 5V which was coming from your 2nd Regen?Do I misunderstand your config?
Edits: 11/29/15
I run a USB cable from PC to the battery powered Regen whether it's running solo or in tandem with a 2nd Regen. I don't understand your comment. When I ran solo battery powered Regen it was 5v powered by yet another Regen not connected to anything except the mains. I soldered its 5v terminals to get 5v to go to my 3.3v battery powered Regen. Even in single or double Regen the Regen dumps the incoming USB 5v power, as I understand. So the boundary conditions are the same for single or double Regen.
Right, when you said mobo, it confused me (I'm reading this on a phone) - I want sure where the 5V was coming from, that's why I asked.So the 2 Regens is still better than one - very good!
Edits: 11/29/15
I've also run a REGEN off a 5 volt (USB) supply rather than the supplied power supply. It seemed to work OK, but probably because my DAC doesn't require 5 volts from the REGEN.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
John Swenson early on recommended the following power supply for the Regen
http://www.ebay.com/itm/30W-DC9V-Hifi-Linear-power-supply-Regulated-PSU-for-DAC-amp-digital-display-/141503525422?pt=LH_DefaultDomain_0&hash=item20f244722e
I bought one and have used it ever since on my Regan. It made a significant upgrade to the sound of the Regen
Alan
OK, perhaps try a TeraDak U9VA Linear Power Supply w/5V USB output if one's DAC required it?Seem to recall that the Audio-GD Amanero board is powered by a liner supply inside of the DAC.
Edits: 12/03/15
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