I hope so. What is wrong with SMPS?
I actually think this is a complex question.
The normal accusation leveled at SMPS is that they kick high frequency noise back into the mains.
When I bought my microRendu (mR) I also got an IFI 9V iPower. These have been built using noise cancellation to stop rubbish being sent back into the mains. There was a good thread on Computer Audiophile (Power Supply (8+) Group Test) where a series of PSUs were measured, and the IFI did very well. However, I preferred the SBooster - my comment on CA:
SBooster LPSU 6v:
Got this last Friday. This is not a Damascene experience, in my system it does not change the character of what I hear; bare in mind that I am passing the mR output into a Mutec MC-3+USB. What the SBooster does do is:
- Improve the quality of the high frequencies; and
- Further uncover low level information in the music.
Signe from Eric Clapton Unplugged.
Standard test piece for me. Included in the supporting percussion are a triangle and wood blocks. These were evident before but, in the case of the triangle the emphasis was on the leading edge and it could almost sound truncated, and out of time in places; now you hear the rounded ring, it falls further back into the mix but you can here what the percussionist is doing. Similarly the wooden blocks are more of the piece and you can hear the resounding wooden sound, rather than a greater emphasis on the strike.
In summary, the Sbooster improves on what my system is doing right. This can almost sound minor, but in terms of what we are after in High Fidelity I suspect it is not - I just don't think it will supply this on its own. If your system is in good shape it will help focus what is already there.
In my system the effect of removing SMPS has been to remove edge leading to a more relaxed, but no less detailed and dynamic, presentation. That said the introduction of a bit of edge with the right music can be a boon!
However, I believe the effect of SMPS depends on how the device is engineered. I noticed no such edge with my Naim NS01, which uses SMPS. While I would expect Naim to take the time and trouble to address SMPS issues I would NOT expect this of IT companies.