Speakers make the biggest bang-for-the-buck! I will recommend a pair of the latest Quad ESL's. Your electronics gear is fine. The stock power cords are fine. The interconnects are fine. Others here will disagree with my views about cables/speaker wire. My experience goes back to 1976 when I bought my first really good HiFi system.
if you had this system, what would you do to make it sound the best you can
This is my first time using this forum. I'm looking to improve my system, and I'd like to hear your ideas of what you would change or purchase to make it sound even better. Current system: McIntosh amp MC202, 200 watts/ch; C42 preamp with DAC and 8 band equalizer; MCD 301CD; MR85 Tuner; streamer MB20. TT is Pro-ject Classic SB, Equalizer Sound Shaper 3 IC, Speakers Spendor A5s rated 150watts peak, cables Audioquest; R to R, J Corder Technics RS1520; Panamax Power. All pieces have original power cords. Audio cables are low-end. Music: Classical, Jazz, Easy/soft Rock. Joan Baez, Enya, etc. thank you for any advice.