Can SMPS based preamps/amps sound organic ?

welcome Kijanki.
the Magtech regulated power supply looks like a switching regulator but it is not a traditional SMPS (like the kind used by Rowland, Linn, Benchmark, etc) but it looks to me that it is some sort of Pulse Frequency Modulated (PFM) switching regulator - it monitors the pulsating waveforms out of the regulator & the rail voltages (it seems that the system has some knowledge of min rail voltage & max rail voltage & what the acceptable ripple should be) & when the rail voltage goes below the min, it multi-pulses until the rail voltage reaches the max & then shuts off. Cycle repeats when the rail voltage falls below min. 

2ndly, it seems that the Magtech power supply is very much like the multi-voltage used by ARCAM in their class-G amplifiers. see this link:

http://www.arcam.co.uk/ugc/tor/a49/Class%20G%20Explained/Class_G_the_ultimate_amplifier_technology_150714_A.pdf

the Magtech regulated power supply looks like a class-G PFM regulated power supply......

Bombaywalla, I'm familiar with class G principle of operation.  And you're right - their "invention" is pretty much class G. It does not matter if you switch signal or supplies - it is still switching operation.  Rowland (IMHO) is the leader again with unpopular, while great sounding choices.

Interesting references. FYI, I tried to find Mr. Sanders’ patent or patent application for his regulated power supply design, which would have provided more information about it.  But extensive searching at the Patent Office website (uspto.gov), using numerous search terms that seemed likely to be relevant, turned up nothing. So unless I somehow missed it the application has apparently not yet been submitted.

Best regards,
-- Al

Hi Almarg,
please see this blurb that appeared in Stereo Times in 2013 that clearly says that the Magtech regulated power supply is patent pending:


http://www.sanderssoundsystems.com/latest-news/219-january-2013-sanders-magtech-amplifier-receives-the-stereo-times-most-wanted-components-2012-award

Almarg,
found 1 patent application for Roger Sanders re. ESL loudspeakers (not the regulated power supply):


http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4&p=1&f=G&l=50&d=PG01&S1=sanders-roger$.IN.&OS=in/sanders-roger$&RS=IN/sanders-roger$