what else do i need to improve sonic performance?


Luxman 550 A II
Harbeth Compact 7 ES3
AZ Hologram II
Rega P5 DV 10x5
Hegel DAC HD11
PS audio PWD
Nordost LS RD

Wondering if I change stock power cables and get power plant cleaner, how much could improve the sonics, certainly I am a novice in the hobby, and always reluctant to spend money in power cables and so on, in fact always used stock pieces,
really appreciate your help.
mountainsong
I am a big fan of Pat Metheny and the Pat Metheny Group. I can tell you that on many of the albums, the music is absolutely wonderful, but the recordings are not great. A really good system will put a spotlight on bad or subpar recordings and equipment. I have just about everything that Pat Metheny has put out and will go to any Pat Metheny concert when they come to my area. But, as I mentioned, some of their recordings are not great. The music is, but recordings aren't and I definitely hear it in my system. One of my favorite albums is Secret Story. Absolute wonderful sound (music and recording). Check it out and see if the sound quality is better than on the album. I couldn't begin to suggest changes to your system. But obviously, in your opinion, changes are necessary. Therefore, find dealers or friends that will let you audition or borrow equipment to demo in your home. This prevents buying equipment without knowing what it will sound like in your system in your home and realizing that you made an expensive mistake. If you can't find a dealer, then a friend maybe. One piece at a time, until the issues are solved.

enjoy
I also agree with Philjolet but would add ditch the PS dac . I had listened to that dac with hi.rez files and transport. I was not impressed at all pick up a good tubed dac.
what Tube DAC to pick from, i have 2 DACs on my home,
The HEGEL HD11 quiet impressive.
advice please