David Berning preamp..looking for suggestions

Audioman, You've posted a bald-faced advertisement for something you apparently build and sell. That may be against forum rules, but do you have a website? That fact that Lamm use Hammond transformers does not per se raise the prestige of Hammond transformers, in my eyes, but Hammond products (tranformers and inductors) are certainly decent quality.  There's better, and there's worse,

Pani, I am surprised you felt compelled to go to solid state amplification to drive your Tannoys; I usually think of Tannoy speakers as being high impedance and high efficiency, thus well suited to even flea power SETs.  In fact, one of your responses comes from someone using an 845 amplifier to drive the same speakers.  Can you explain the reasoning?  This is not to say that there are not a few really nice sounding low-power SS amplifiers that one might consider for this job, such as the Nelson Pass "First Watt" amplifier family.

The subsequent discussion makes me want to know more about the Berning preamplifiers.

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.

Palasr, Thank you for the correction regarding the EA230.  I was just guessing at the model name, when I told the story about the Berning amplifier that produced the clicking noise on the speakers, when it was too close to the Modulus preamplifier. Apparently I got that part wrong.  For sure, then, it was some later model that did use a switching supply.  Actually, the model name is not so important as the point I was trying to make, with which no one seems to disagree:  DB knows his stuff, designs and manufactures excellent gear that is usually novel in some way or other.