@bassbuyer If you look at the rear panel of the Zen Mini Mk3 you will see the DC inlet accepts 9-24v.
I have it on good authority that, if everything else were to stay the same, simply turning up the wick to provide a higher DC input voltage will run the circuitry in its sweet spot.
The stock wall wart produces 12v.
The Zen LPSU produces 16v.
Innuos would doubtless argue that a warranty is invalid if you use anything other than one of their PSUs (even a 12v or 16v from another manufacturer) but loads of people do.
I actually run mine with a customised LPSU producing around 21v ie. with around 10% safety margin, though one would imagine the 24v stated on the rear panel also has a margin of error of its own on top of that. It doesn't run physically hot at 21v ! My combo has been on 24/7 for over a year and continues to deilver faultless service and smiles.
This might be for further down the line but I thought I would share a potential upgrade path for you.