What is the best OTL out there?

Another vote for Atma-sphere; not only for the product but for all the support after the sale as well.

Sufficed to say, if you have never sat in front of a properly set up kit with OTL amplification, you do not know what you are missing... The level of transparency and sense of open sound stage is simply exhilarating and astonishing and may well leave you with a possible conundrum. It is likened to an audio enlightenment. Once the clouds have parted, the brilliance shined through, and the singing have sung, you can't go back to pretending music anymore.

Count my vote with Atma-Sphere. I have had the MA-1 Silver Edition Mk.3s for some years now and couldn't be happier with their performance.

When people start this "best" business stuff though and are speaking of one component in an entire kit, within a listening room, and to someone's particular ear, it leaves me sort of itchy-scratchy. Perhaps a better comment I might make from my listening experience would be to say that, paired to the right speaker the Atma's are without musical compromise. 

Most OTL  are not producing enough plate dissipation for a pair of tubes,Imagine for a pair of 6c33c tube with max.of 60 watts plate dissipation can produce more than 25 watts class A of power, 3 x of 300b output in SE.

Not trying to change the subject, it just seemed like all the posters here would be the ones to ask. I would like to get recommendations as to whether anyone uses an OTL amp with Quad 57's. I bought a pair of these to try, after all these years, I have never heard a pair so I figured it was time to try them out. I have read on some other forums that a lot of the recommended amps mentioned here were if I remember correctly also recommended for the Quads. Does anyone have any experience with this pairing? 

Most OTL  are not producing enough plate dissipation for a pair of tubes,Imagine for a pair of 6c33c tube with max.of 60 watts plate dissipation can produce more than 25 watts class A of power, 3 x of 300b output in SE.

Its not a matter of plate dissipation, its a matter of output impedance. For some reason people really do want a low power OTL, but what happens is as you decrease the number of power tubes more and more of the total power generated by the output section is absorbed by the output section itself. So if you build a bigger amp its more efficient and the individual power tubes run cooler.

Not trying to change the subject, it just seemed like all the posters here would be the ones to ask. I would like to get recommendations as to whether anyone uses an OTL amp with Quad 57's. I bought a pair of these to try, after all these years, I have never heard a pair so I figured it was time to try them out. I have read on some other forums that a lot of the recommended amps mentioned here were if I remember correctly also recommended for the Quads. Does anyone have any experience with this pairing?

Quads and OTLs have a history together going clear back to the 1950s. We have a lot of customers that use our amps with ESL57s and ESL63s which are good speakers for OTLs due to a fairly benign impedance curve.