@donavabdear Glad you found items that made a difference. Our Audio Hobby can be a never ending journey of different equipment and tweaks. If we could all start with stable and clean AC that would be a great start to eliminate one variable. Stand alone filters, conditioners, and regenerators all can give you good AC. AC cables, not necessarily expensive, made of quality materials and construction are important to minimize pollution of a clean AC source.
Start with clean AC and convert to stable DC in each component. However, audio remains a variable frequency and amplitude signal to process keeping unwanted noise at bay. Our home environments typically include cell phones, computers, smart TVs, Wi Fi, Bluetooth, and various convenience electronics that all contribute to EMI/RFI pollution. All that electronic noise can still cause problems with our audio equipment.
A Power Regenerator eliminated my system sounding different morning, afternoon, or evening. Prior to that several other "tweaks" made differences that were both audible and measurable. Each change was based on improving the quality of items like wire, capacitors, resistors, connectors, etc. Cost does not have to get out of control. Made my own quality shielded interconnect cables. Properly grounded everything, avoiding ground loops.
AC cables are a work in progress. Ditched the cheap manufacturer supplied cables and made one of my own and tried a couple reasonably priced "audiophile" cables. For my system different AC cables made much less difference that the Power Regenerator.
Everything matters, to a varying degree, due to many factors unique to each of our systems and environment.
Best of Luck.