Any thoughts about LPS-A6 [eversolo DMP-A6] linear power supply?
Did anyone tried this?
Is there any benefits?
In some forums they say there is improvements, but for me it is hard to believe
Many believe an LPS sounds "cleaner" than an SMPS. You'll hear them talk about "noise" and "jitter." Others say it's total snake oil. I don't have the science or the equipment to prove the case either way.
I have a Chord Qutest that came with a wall wart. When asked why he wouldn't spring for an LPS on such pricey products, Robb Watts said the power supply was irrelevant - or at least an LPS wouldn't provide any improvement. I thought I'd check this claim with a basic battery bank. I didn't hear a big difference, if any, from the battery.
I did, however, spring for an SBooster, which is hilariously twice the size of the Qutest. I wasn't expecting it to fare much better than the battery. I was shocked to hear a massive difference. What I mostly heard were artifacts that sounded, to these ears, like a party trick I'd be willing to pay for. It's cool when a cymbal crash seems to just hang in the air. I dig that. I don't think I'd ever noticed something similar with a drum hit. That made my day.
Of course, it could have been the switch from the MacBook to a streamer, any streamer. It could have been the Mk II filter I got with the SBooster. Then again, it could just be me hallucinating because hype is hypnotic.
Years ago, I bought a home-built amp called the M2 (Matrix Squared). It came in two boxes: one for the amp; the other for the power supply. That amp (which was probably decrepit by contemporary standards) felt "holographic" compared to other amps I'd had that utilized some kind of wall wart. Again, this could have just been good engineering or great hype.
Installing an LPS in your DMP-A6 will void the warranty. For a lot of people, that would be an unacceptable risk to take with their $900 integrated streamer/DAC/pre-amp. It's something you can't do on the higher-tier DMP-A8, which has two PSUs: a regular SMPS and LPS, each positioned at opposite sides of a larger box. Either EverSolo believes in the hype or is hoping to profit off of it, even if it adds heft to its production costs and makes the DMP-A8 more expensive and less likely to sell as many units as the A6.
To quote Tricky Dick in his infamous Checkers' Speech, "We're keeping the dog." The SBooster may be a boat-anchor-sized placebo but, in this case, ignorance is bliss. Without a blind A/B test, this is just anecdotal rambling. I really hope I'm wrong - and the real difference comes down to a better clock and lower distortion.
I also have a Wandla, which comes with an SMPS as if none of this mattered, while the Oor it pairs with can be powered by another SMPS or by the Oor, which is a hybrid power supply. Reviewers wax rhapsodic about how the Hypsos really adds refinement to the Oor, a claim I never properly A/B tested.