I have the microrendu, LPS-1, and HD-Plex. My DAC is a Schiit Yggdrasil. I just got the LPS-1 and will report back after extensive listening. I'm also considering a Mutec MC-3+ USB, so I can use AES to the Yggy.
I see you're in the UK - you might be interested in comparing a real battery PSU like the ISO-PS to the LPS-1? 6.6V high current output - perfect for power input to many devices
This is one of the units going on tour as announced on WBF here
Why would a good battery supply be any different? Because the LPS-1 uses a voltage regulator which I & others have found doesn't sound as good as direct battery power - even the latest & best ultra-low voltage regulators.
Why might this be? I believe that the low noise measurements shown in the datasheets do not tell the whole story - I believe it has to do with the dynamic behaviour of the power source & how it handles the noise that is generated on the circuitry being powered. This noise is transported back to the power source via its ground link & how this is handled may well differentiate direct battery power from a voltage regulator. Whatever the technical reason, listening reveals that there is not a subtle difference anytime a voltage regulator is bypassed with direct battery power - even if that regulator is powered by battery.
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