I agree with others here that vibration control is important. Try these. A lot of people here swear by springs as isolation devices, and these are adjustable for weight and only cost $23 for a set of four. They’re from Amazon so if they don’t make a meaningful improvement just return them — what’s there to lose? This is absolutely where I’d start.
https://www.amazon.com/Tertullus-Isolation-43mm%C3%9738-5mm-Aluminum-Turntable/dp/B09QC1DJXT/ref=sr_1_3?crid=3BSW0GILOATNE&keywords=Tertullus+spring+feet&qid=1691621394&sprefix=tertullus+spring+feet%2Caps%2C434&sr=8-3
DAC VIBRATIONS 2
DAC Vibrations?
Has there been any evidence that vibrations Ken affect the effectiveness and translation of digital to analog conversion on a deck that may be in need of vibration protection?