A member I know got a great deal on a lightly used ph10 and psu10 together. They had owned just the ph10 previously so had some baseline to compare. Their thoughts were it helped a little but might not be worth an $1100 purchase as an upgrade.
Hey, I think that's me!! I bought my PH-10 and PSU from Canada. Corby's audio?, or something like that.
When I did the quick A/B with and without the PSU, I had about 75 hours on both units. There was a difference, but it was not huge. However, this was about a month ago, and have since put at least another 50 hours on them.
I did test it again this past weekend, but only to test noise:
PH-10 setting was for MC, and without playing anything, I would turn the volume up on my PS Audio preamp, gradually until I was able to hear any audible hiss from my speakers at my listening position (7 feet away).
PS Audio preamp (0 -100 volume is displayed) it took to 48 to hear hiss with the PSU, and only 31 without the PSU. Nothing extraordinary technical about this test, but found it very interesting nonetheless.
