In Reply to: RE: change by load posted by Thorsten on December 11, 2014 at 02:56:42:
I cannot see anything wrong from outside. I did not open it because opening the product will void warranty, or void my right to return it to the seller.
I also thought about the possibility that something is wrong in power supply.
Unfortunately, the manufacturer (Styleaudio) refused to answer whether the distortion I have is within their specification or not.
There were products with magazine reviews with similar defect or similar intentional tuning (high 2nd and 3rd harmonics at low frequency). See for example YBA 2 preamp review in Stereophile.
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Follow Ups
- possibly something wrong in power supply . . . - dave789 03:33:09 12/11/14 (4)
- RE: possibly something wrong in power supply . . . - Thorsten 21:32:36 12/11/14 (3)
- defective active ground drive, for example - dave789 22:28:46 12/11/14 (1)
- RE: defective active ground drive, for example - Thorsten 22:59:06 12/11/14 (0)
- it is very frequency selective. - dave789 21:59:09 12/11/14 (0)