Best Sonos ZP-80 Mod?

Barrelchief,
Yes, the sound improvement is evident from both the analogue and digital outputs. Since I listen to the digital output through a superior DAC, that signal is better, of course. For casual listening (i.e., while I'm working busy the house), I use the analogue outputs. Before the power supply upgrade, I avoided the analogue outputs because the sound quality was unsatisfactory.

Have a look at the Pacecar mod via Empirical Audio. I've got one. Highly recommended.

How does the Cullen mod compare to the Empiracal?

Anyone?

Cullen mod - might be it for me, I am all ears.

Mrjstark, do you actually have the Cullen mod? If so, can you please elaborate? BTW, do any of these mods affect the Sonos' sw upgradability? Sonos typically comes out with a sw release once a quarter.