BTW, not last year, but the year before, there were quite a few people in the David Ellis room who got to hear SB power supplies from Wayne at Bolder Cable and Hugh at AKSA Audio and all agreed that they heard improvements over the stock PS.
George
Of course they did, as it probably wasn't a blind test and no one had the stones to say otherwise. If I was in a room with folks who all swore they heard a difference, I wouldn't speak up to oppose either. Let's see a double blind test, level matched test, and then a unanimous decision. Then I'll buy one.
Henry,
When you come over, we can do a test with my SB I use in the HT system. I have the stock wall wart and an elpac PS modified by Wayne at Bolder Cable. We can send the digital out of the SB into the Modwright TP and listen to it with both ways. Putting aside which is preferred, I am confident you will hear a difference.
George
You do realize that because of your public confidence, you're already swaying his decision. Psycho-acoustics my friend. No offense, by the way; I am just not a believer, as a double blind testing has not proven otherwise. Unless there is something drastically wrong with the stock PSU, there should be no audible difference. Now if there is something wrong with the stock PSU, well, then Slim Devices will have a lawsuit on their hands. Also, if the dB level is increased or decreased, that doesn't count, as it's no longer level matched and even 1dB can be misconstrued as better or worse. Level matching is key.
Well, FWIW, I've had my Duet for little over a year now. I was one of the first to purchase a linear power supply for it when Wayne at Bolder made them available specifically for the Duet. After having it in my system for about a month, I noticed a dramatic increase in how the bass sounded. The bass was more "full" overall, but the biggest difference was how the bass tightened right up. It was a definite improvement. There was also in improvement in how quiet the background was compared to the standard power supply.
I eventually purchased an AVA Insight DAC. With the DAC the soundstage was broader, giving the instruments a more "3-D" like effect. I did have the op-amps upgraded just a few months ago and couldn't hear a difference between the new ones and the old ones.
I eventually sold the DAC and will be getting my Duet modded by Wayne. Having prior experience with Bolder products and doing a little research on Wayne's mods makes me comfortable that my Duet should give me the sound I'm looking for, above and beyond what I experienced with my external DAC.
I just wanted to shine a little light on the subject from someone who has first-hand experience at both ends, instead of spewing forth my opinion without any solid ground to stand on.
"A scam to get you to spend money", c'mon, you're better than that.
Doug
Like I said, YMMV. Prove to me, under double blind, level matched test conditions that you can pick out the non-stock power supply, and I'll believe you. Until then, their is no definitive research showing human beings can actually hear the difference. If I spent that much on a power supply, I'd probably convince myself I heard the difference too.
Also, it's my opinion, yes, but it's based on my experience and the lack of research showing that the differences are audible. Speaking of experience, have you ever partaken in a double blind, level matched test? I have. So I guess I do have experience at both ends.
George -
I wasn't knocking Bolder directly, just companies that charge an arm and a leg for upgrades that provide little to no difference at all. Those are scams IMO. But as you said, one man's subtle may be another's drastic. It's highly subjective, which is why I used the words "in my opinion." Sorry to have stuck a nerve dude.
Dan's work is proof positive. Dramatic isn't a good enough adjective. 
Ah...I am pretty sure his work is not proof positive. If it was, where's the proof?
