Recommended Speaker List for Atma-Sphere OTL Amplifiers.

..and to pile on a bit, the Vandersteen way preserves the transfer function of the main amplifier, which is part of the point of this thread....

How does Tannoy & atmasphere match up? Especially in the bass department......

Very well is the short answer.

I have used the MA-1s amp with the Vandersteen Treos without subs and they sound great!

Dragon, it all depends on how and what you like to listen to. If you are a rocker and like to play loud than an efficient horn system like those mentioned above would be the way to go. But if you tend to listen to more acoustic instruments, jazz and classical at moderate levels then the mid range purity of a full range ESL would be best. Something like the Sound Labs 545. I am not crazy about ESL-57s because they are just too fragile and in all reality the Sound Labs is a much better all round speaker. It is much better in the mid bass and it's high frequency dispersion is much better as well as being tough as nails. Ralph also insists they match up with his amplifiers beautifully. The 545s are also a lot smaller than the big boys. I believe they are narrower and taller than the ESL-57s and would take up less floor space. They are less sensitive than a horn system and will not go as loud but still 8 watts will get you to 95 dB, a comfortably loud volume and theoretically you could hit 102 db with a 60 Watt amp, louder than most of us listen.

I’m a little late to this thread sorry.

 I’ve come across some older M60 mk2 amps a friends has at his audio shop the price is right so I’m seriously looking at them. Question is will they drive high efficiency horns like the current klipsch heritage line. I’ve currently been trying  some modded heresy 3s with the thought to move to the new Heresy 4, Cornwall 4. Or La Scala in the near future. 
I’m very new too OTL Amps but am quite versed in SET etc. I’m coming from SET 300b Amp. So tubes are not new just OTL. 
Also I read the amps can be run with less tubes at lower power is this correct? 
I am considering a trip to the shop for and update-recap-etc as required.  Probably new tubes as well as the ones in it are unknowns and miss matched. I suspect the previous owner pulled his good tubes when he traded it. 
Thanks I’m advance 

glen