Berning would be my choice if you have the appropriate speakers. To me speaker impedance trumps efficiency. If I were to buy a S.S. amp then the darTZeel would be on my short list, but there is no way in the more sublime aspects of reproduction that the dar is going to match the Berning. With higher impedance speakers, no amp type I have ever heard matches OTLs or David Berning's version of an OTL.
Which one to choose between two 80K$ tube amps?
There are two interesting 80K$ tube amps on sale at Audiogon.
https://www.audiogon.com/listings/lis9jhj0-david-berning-co-211-845-otl-tube
The first one is David Berning OTL design with output of 60 Watts.
it looks beautiful. But I had never used OTL amp yet.
I am curious how it sounds with high efficiency speaker.
https://www.audiogon.com/listings/lisa27ii-jadis-ja800-flagship-tube-amplifier-six-chassis-best-ever-made-nos-new-old-stock-tube
The second one is Jadis JA800 with 6 pieces and 400watts.
I had used JA500 (only 4 pieces with 350 Watts) from 2000 to 2002 to drive B&W Notilus 801 with utmost authority and unbelievable slam.
It was kind of lifetime experience to own this beautiful and overbearing monster.
But I could not use it during summer time in modest size room.
Thus I let it go and got Silbatone 300B SET amp to drive efficient full range speaker.
350 Watt to 8 Watt
If you have money or hit the Jackpot, which one will you go for?
https://www.audiogon.com/listings/lis9jhj0-david-berning-co-211-845-otl-tube
The first one is David Berning OTL design with output of 60 Watts.
it looks beautiful. But I had never used OTL amp yet.
I am curious how it sounds with high efficiency speaker.
https://www.audiogon.com/listings/lisa27ii-jadis-ja800-flagship-tube-amplifier-six-chassis-best-ever-made-nos-new-old-stock-tube
The second one is Jadis JA800 with 6 pieces and 400watts.
I had used JA500 (only 4 pieces with 350 Watts) from 2000 to 2002 to drive B&W Notilus 801 with utmost authority and unbelievable slam.
It was kind of lifetime experience to own this beautiful and overbearing monster.
But I could not use it during summer time in modest size room.
Thus I let it go and got Silbatone 300B SET amp to drive efficient full range speaker.
350 Watt to 8 Watt
If you have money or hit the Jackpot, which one will you go for?