So you know that the linear power supply is the culprit. Probably from the transformer.
Grounding can be a problem with low level turntable cartridges . Your LPS probably has a 3 prong plug whereas the standard ( wal-wart) has only 2. Try reversing and/or lifting the plug of the linear power supply at the wall with one of those 2 prong adapters.
ozzy
Grounding can be a problem with low level turntable cartridges . Your LPS probably has a 3 prong plug whereas the standard ( wal-wart) has only 2. Try reversing and/or lifting the plug of the linear power supply at the wall with one of those 2 prong adapters.
ozzy