OTL amplifiers


Can anyone explain to me, in layman's terms, the advantages or disadvantages of OTL amplifiers? I have heard a lot about them, but have not listened to any to date. I am really a tube fan and want to reach tube nirvana and don't know if OTL is the way to go. Are they suitable for all types of music? Any information would be greatly appreciated. Thanks.
dfrigovt
SET OTL amps

BTW, the Joule VZN80 is a Single Ended Triode OTL amplifier...

Jim
re: SET OTL amps

Same goes for Atma-Sphere.

Perhaps Twl is referring to single tube SET's.
Yes, I'm referring to single tube SET, with my statements. All others are simply parallel configuration to lower output impedance. As Albert Porter once described it to me, parallel is like a choir singing, and single tube is like a soloist singing. No matter how syncronized a choir sings, it will never be as clear and articulated as a soloist. I thought that was a very lucid description. I think the simpler the better, as long as it can get the job done. Of course, there are certain speaker requirements for efficiency in order to use low power single output tube SET amps.
I think it's very WRONG to use the ZERO,You get out of not using an output transformer and there you are using them again.What is the use of using an OTL with transformer at the OUTPUT??