And so, after learning that it was possible, here is DAVE powered by a 160 VdC / 3.5 Ah lithium-ion battery, without any inverter.
Operating voltage: 160 (max) – 120 (min) Vdc.
BMS for charging management and protection, designed free from EMI/RFI emissions. Outgoing have been put Neotech solid core UP OCC cables.
Like the other battery I use for the streamer and the MScaler, a double timer disconnects automatically at set times the charging from both the socket side and the battery side plug, completely isolating all audio components from the mains while listening and reconnects at night for charging, resulting also protected from possible thunderstorms or overvoltages.
It was delivered to me a few days ago, so I'll update with further comments regarding the audio result.
Here are my impressions of using battery powered DAVE,as well as for the rest of the system, consisting of the Lumin U1 mini and M Scaler streamers.
The streaming platform used is Qobuz, connected via ethernet cable to Sky Wifi (fiber optic router).
The connection between Lumin and M Scaler is via Toslink cable, while between M Scaler and DAVE is via Silver BNC cables.
I state that the realization of the battery for DAVE was carried out after observing the results obtained with M Scaler and Lumin and understanding that the disturbances
generated by the home network are insidious and very difficult to eliminate. So that was the way to go.
We come to the perceived differences, after a few days of listening and A / B tests, returning to the mains.
I state that these differences are not "macroscopic" but are to be understood as further improvements to a system, in my opinion, already excellent.
The sense of "digital sound", if it can be called that, understood as a sense of artificial on the higher frequencies, which was perceived in some pieces / recordings, has completely disappeared.
This is immediately highlighted by the Abyss which, being very revealing, clearly exposes all hardness. The sound is always very detailed, rich in nuances and micro details, yet soft.
The instruments, although DAVE is already very good at this, highlight further better separation and focus.
One thing I noticed: the on / off HF filter no longer seems to have any influence on the sound. I have always preferred HF off because activated it gave me a sense of "shortness of breath" to the music.
It also seems that there is no limit to increasing the volume, it does not break down in the slightest: with the softer high frequencies the mids come to the fore. Full-bodied and more precise bass
they increase the depth and everything improves together.
Another thing I observed: now the additional difference of the M Scaler is very noticeable. Feel every change in frequency up to 768 KHz where the sound expands in an incredible way.
I consider myself satisfied with the result obtained. It was a leap in the dark, at worst I would have been satisfied with having isolated the system against possible overvoltages or storms.