David Berning preamp..looking for suggestions

My only problem with Berning design is the use of SMPS (switch mode power supplies). From all the gears I have heard till this day which has SMPS, none of them could manage to sound without some "digital" hash/artifacts. Not a single one. My only logic to this is, after all the signal is just shape of the wave, the actual thing that takes this shape is the power and is delivered to the signal. If the power itself has any noise/hash (in a SMPS the noise/distortion would be similar to that of digital domain) then no matter how good is the amplification circuit one ultimately hears those "digital distortions". And no PSU is undistorted.

Lewm,
Tannoys are efficient speakers but they are not typical "high efficiency" speakers like the Altec, Avant Garde or the likes. Tannoys specifies their efficiency rating based on the HF driver. The LF driver is actually 4-5 db less efficient. The LF driver of the Tannoys can go low in the bass and needs to be gripped, which is why there are views that a amp with a bit of negative feedback works well for the Tannoys. All said, I have finally zeroed upon a Audio Note PSE 300B with 18 watts as my amp. It does 90% of the things better than I wanted. Only the very low bass seems to be rounded off which is okay for me.

"My only problem with Berning design is the use of SMPS (switch mode power supplies). From all the gears I have heard till this day which has SMPS, none of them could manage to sound without some "digital" hash/artifacts. Not a single one"

and yet with the Berning design there is no digital hash/artifacts. Truly a black back ground and completely transparent.

The ZOTL One Pre is truly phoenomonal but for a fraction of the price the Micro ZOTL2 sounds just as good but with fewer bells and whistles.

Transparency and black background is something we get in digital playback in spades. Most Lps don't sound as clean as a good cd. Yet there is something about analog playback which is more like the real life (even cassettes sounds more natural than CDs). The artifacts that make digital sound "digital" is embedded deep in the mix and we only hear it as a whole along with the music. Ultimately we respond differently to analog and digital playback and that's what I hear between digital power supply and linear power supplies. 

Lancelock,
The unique experience with the Berning design is probably because DB himself is just smarter than anyone else in the industry.  Quiet and modest, as well. (I have met him a few times in my life, but I have none of his gear currently, and I have no financial interest in his success.)  A few decades ago, one of my friends purchased a Berning amplifier (I think it was an EA230), and he had it placed right next to his Modulus preamplifier, in a cabinet.  (At that point in time, DB was known to us as a local genius designer.) We could hear the switching noise over the speakers, until we moved the amplifier a few feet further away from the preamp.  Since that one experience, I know of no instances where switching noise has been a problem with a Berning product.  My friend ended up with a pair of Berning ZH270 amps running his Acoustat speakers.  I auditioned the same pair of amps on my own 'stats.  They were dead silent in both venues.

Don't listen to that nonsense about SMPS and digital hash/artifacts. Its all about implementation.