Peachtree Nova 300

I have a Peachtree Nova 3oo which in itself is not the problem however the sound I get playing the same source - Qobuz - delivers remarkably different results between the following connections.

1. Sonos Connect with volume bypass via Audioquest Optical to Nova
2. Bluesound Node 2 via Audioquest Coax to Nova
3. iPhone via USB on Nova using bog standard Apple lightning to USB cable.

To my surprise 1 and 2 sound remarkably similar. But 3 outshines them both by a country mile. Much more detail and openness.

I am currently playing with Roon as the UI, and ideally would like to avoid having to plug my phone in to play music...

Any suggestions/ideas of what to tweak please?

I’ve had a Nova500 in my system (Dynaudio Contour 60, SoTM SMS-200 Ultra, Marantz SR7011 for movies) since December. The USB connection I find sounds best out of the SoTM but to be fair I haven’t critically compared each input. 

Im still tuning the acoustics as I’m cursed with a square room, nearly going crazy with port-plug combinations and positioning tweaks!!

all that said, it ain’t bad at all.  One day I might go back to tubes with the Contours as I’ve heard good things but for now,  the Peachtree is a keeper.

Anybody do the upgrade from a Nova150 or Nova300 to the Nova500. There is a special price continuing this month for the upgrade. I have a Nova150 and it is $2K to get to the Nova500. Not sure if I should do it.

I have had a Nova 150 for quite some time now.   Running Tidal and Amazon music from IPad via a USB to lightning Audioquest Cinnamon cable.  Sounds nice thru my Egglestonworks Fontaine speakers.  They are not that efficient (87) so I decided to purchase the Nova 500Amp and use my 150 just as DAC/Preamp.  Hoping the extra watts will help my speakers light up at a much lower volume level.  Low level listening is important to me and I like to hear the details and nuances without having to turn the volume up that far.  Will let you know after I receive it and integrate it in for a bit how it is.  Joyous Listening....
Christian

Followed this thread to this point. Anyone use the PT 300 or 500 with Sonus Faber speakers, specifically the Olympica IIIs?
I’ve got these speakers currently in a 7.2 system (Marantz 7705 with Marantz M8077 amp), but want to dedicate to a proper 2 channel listening experience. Integrated preferably, and with a Home theater bypass capability.
Suggestions welcomed...