To upgade or not, that is the question. Where is my weak link?

[msgb]

 

[msgb]

My set up:

PS Audio Power Outlet

Myryad Mi 120 & Ma 120 in bi-amp mode (connected with QED Qunex 3)

Myryad MC100 Cd Player connected with QED Silver Spiral interconnect

Sonos connected (with QED Reference Digital Coaxial) to Burson Audio DA-160 Dac connected to Amp with QED Silver Spiral interconnect

Rega RS7 biwired to amps (Ma for lows, Mi for highs) with Ecosse CS 4.4

I am thinking that the speaker cable is the weak link and the likely upgrade but your suggestions are welcomed. I was thinking of getting QED Genesis Silver Spiral bi-wire cable but that might be overkill?

 

[altruistic.lemon]

Why do you think there's a problem?

 

[msgb]

I don't think there is a problem per se, just wondering if I am getting the best out of my set up and if I could improve. I am happy with the sound but also don't know what I am missing...