First thing. Plug your amp directly into the wall. You can do this now.
You will get very significant improvements with direct lines, amp power cord, and power conditioner for your non-amp components, then get power cords for your components.
The first three will probably have the biggest impact. Together they should be very significant. I’d schedule an electrician for the direct lines. 10 gauge ROMEX can do the job well... much more expensive options are available, I’d just do the ROMEX. I just used hospital grade outlets to begin with and upgraded to high end later so I could understand the impact. They were notable, but my system was really at a high performance level by the time I did these.
I would start shopping for a very good quality power conditioner. I’d look closely at Shunyata and IsoTek. If I had to buy one now I would get an Everest... consider it something you will have for 20 years. So, it is worth getting a good one. It improves all your components other than your amp. Mine is 25 years old... and is still considered excellent.
Power cord for amp. Look at Audio Quest storm series or Cardas. Cardas will be a little warmer... the Audio Quest Hurricane is absolutely wonderful... although the Dragon is even better. 2 meters is best... think of them as power conditioners.,.. the longer the more conditioning.
Finally, power cords on you components... very worthy. I use Transparent on all my equipment (all wires) except the amp... The Transparent high current was too expensive for me at the time.

