What kind of spurious signals and how was it measured? Anyone?
That should not be hard to do. Place a preamp on the stand to be tested. Run the volume up with a shorted input (phono would be best). Subject the preamp in the stand to a 20Hz tone measured at 90 db at the front panel of the preamp. Observe for the change, if any from the output.
Ethan Winer has made a lot of people mad over the years, and has been banned from multiple forums for doing so.
Part of that is because the guy tends to be a bit of a troll. For example, once he made the claim (and likely still does) that power cords can't make a difference- 'it's a power cord!" was about all you could get out of him. I challenged him to show his measurements, since he's a measurement guy. The funny thing was he didn't have any, and I did. They were pretty easy to obtain, too. When I pointed out that we could see a more than 2 volt drop across the power cord his instant response was that the power cord was a piece of crap. Now that struck me as trying to have it both ways; apparently even by his testimony power cords can make a difference even when they don't.
Then it turned out that his reference amplifier was a Pioneer (keeping in mind he is anti-tube) integrated that cost $600.00 (and as you might expect it did not have an IEC connection to allow for easy power cord exchange...). I and others tried to explain to him that the larger heatsinks, better quality components, larger capacity power transformers and filter caps in the power supplies of high end amps actually made a difference but he wasn't buying it (literally).
After all that he finally did get banned from that site. I don't find him all that credible and often a bit obnoxious, but that's me.
