IMHO (from personal experience) the cable or power cord/vibration devices can be the issue. The good news is they are a lot cheaper to address. After spending $170 for a 1.5M Pangea coax (same specs as DH Labs @ $240) I tripped across a thread here about Ali-Express Chinese cables. I have no issues saving money especially on cables. Dipped my toe in the water and ordered Nordost Odin 2 (name knock-off), both a 1.0 and 1.5m for half the price of the Pangea! Figured it would sell quick but noooo. Anyway, the Odin 2 brought my entire system to new levels of enjoyment. After sufficient break in with the 1.5 I swapped it out for the 1.0m and was further shocked that a mere half meter shorter could reveal so much more. I wound up replacing all the cables in my system, but moved to Odin 2 Gold which gives me more texture, aka fuzz on the peach.
Since I swapped out the Odin 2 for Odin 2 Gold for over a year I have been searching for a Odin 2 Gold coax cable which I finally found and should be here in a couple days: price a mere $46 dollars and free shipping
HTH