The only thing that needs upgrading if you want to go all the way is the Dac and streamer…I would get the Playback Designs MPD-8 and their streamer too…
Weak link
Overall, I am happy with my system. Have a minor case of upgradeitis. Wondering where you would upgrade. Speakers KEF reference 3 non meta. Continuum 8 amplifier. T+A dac 8dsd dac/preamp. Innuos pulsar streamer. Wireworld interconnects and speaker wires not sure of model. Room is non treated 15x18. There is carpeting and window treatments.