![]() Allo make an LSPU the Allo Shanti which powers both a Raspbery Pi and their addon Digione Signature hat and this has been tested and proved to be a very good PSU. The real problem is that there does not seem to be anyone building and selling high quality SMPS power supplies as they do LPSU supplies. There will be (Benchamark I presume being one) companies and designers who do look very closely at the power supply and then build a much better specified and functioning SMPS which within the design they have works as well if not better than any LPSU in that design. In most case they are a cheap and simple thing just provided to get things working and with little thought or expense wasted on how it could be improved. ![]() SMPS has been adopted as the cheap and almost universal way that many small items like DAC,s Phono Stages and other less power hungry items are powered. We can argue about which is best but all of them can and should be a little bit better than a simple wall wart which is the main SMPS we come across. I think this is because Linear Power is well understood and has a simple (well I do not understand it, but then again I am Bear of very little brain) for those with the knowledge set of rules and parts that mean a good quality psu can be produced by many companies. Now there are quite a number of companies and individuals who make very good and excellent Linear Power Supplies and some cost more than the item they are powering. Power supplies I think most of us have come to agree are not only essential for any equipment to work but also a main and vital part in getting the sound quality of any item to work in a good way. This was because Tim knew his subject and knew how to design and build good amplifiers that he knew would sound musical and satisfying, what individual parts he used was almost irrelevant as he just used what was needed and then made that item work in the overall design which is the main thing. All of them sounded excellent and had I been able to afford one I would have been very happy with any of them. I also heard a solid state single ended amplifier and an SET designed by him. Tim of EAR designed some valve amplifiers, he also designed and made some solid state ones. If it contains class A, class D, valves or batteries of themselves they do not guarantee a good sounding design. A good amplifier is a good amplifier and it is because it has been conceived and designed and then made to a specification that works. We may well be getting in to the Class A versus other classes and Solid State or Valve arguments. Your experiences please. Note I am suggesting personal experiences similar to the Node 2i thread rather than just a copy and pasting of Benchmark publicity material. Has anyone done that? If a good SMPS can be as good or better than a good LPS (but cheaper, smaller, more efficient etc etc) then surely someone somewhere must have done that? So that got me thinking and I have started this thread with the hope that Wammers will come forward with other examples of where they have taken out a LPS from a DAC or other device and have replaced it with a (obviously good quality) SMPS with a resulting improvement in sound quality. Am I misrepresenting the Benchmark position? I don’t know.Įlsewhere on the Wam we have the pimped Node 2i thread where very many Wammers have taken out the SMPS from the 2i and replaced it with an external LPS with easily heard improvements to the sound quality. Click to expand.It seems to me that Benchmark are putting a lot of faith in the bulk of the SMPS noise being outside the audio band and paraphrasing, that it is therefore of no consequence to the sound quality of the DAC.
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