I understood that, because the LPS-1 is a virtual battery PSU, the 'charging' power supply doesn't have to be anything special at all!
Well, yes and ... no.
If what UpTone guys say is true (and I have no reason to doubt their words), then indeed the PSU quality should not matter.
However, different PSUs still differ in the amount of noise they inject back into the AC power line, which may have an influence on the rest of your gear connected to the same AC line.
Here are the AC noise measurements I have taken using the
Trifield EMI Power Line Meter:
As you can see, the Meanwell PSU kicks back as much as 270mV of noise (over the reference level of 23mV). Compare this to just 1mV of noise injected by Teddy Pardo PSU under the same load.
Here all the PSUs that I have tested:
1. Teddy Pardo linear PSU
2. UpTone JS-2 linear PSU
3. SOtM supplied SMPS (PowerTek)
4. Meanwell SMPS
5. Generic linear PSU
6. Ktec SMPS that I got with an external HDD
7. iFi iPower SMPS
8 Co Ming Data SMPS
And here is the test rig:
Audio Power Industries Power Wedge Ultra 215 power conditioner + the Trifield EMI Power Line Meter
Test setup (under load - LPS-1 + SOtM sMS-200):