I have found a better CDP - more "organic", maybe even rolled-off, Tubes in my Amps, soft-domed rather than metal Tweeters in my speakers, power conditioning, isolation devices for CDP and Amp and room dampening/diffusion have all made an audible difference to my tinnitus-affected listening.
And I agree the room was the single biggest factor in my particular journey.
And I agree the room was the single biggest factor in my particular journey.