Thought on OTL tube amps

don't mean to hijack the thread BUT was wondering why all the OTL amps I know of are tubes. Are there no solid state OTL amps? If not, why not? Just curious and hope someone will answer a question.

Blow a tube with your OTL and you could fry your speakers. Great sound, but some risk if you listen loud, or run tubes till they drop. Jallen

Most SS amps are OTL. Transistors are intrinsically low impedance devices and most circuit topologies don't need an output transformer. Tubes are high impedance devices and most circuit topologies do require a transformer to drive low impedance speaker loads.

I really enjoy OTL amps and have owned examples from Tenor (75w, 75Wi), Atma-Sphere (M60, MA1) and, Joule(VZN 100) and Berning (Siegfried, 270 and ZH 230...this one I use currently).

I have not had reliability issues with any of these or certainly any more than any other tube based amps.

They require careful speaker/system matching...your speakers would likely work well.

There is a transparency and immediacy to the sound that is very appealing to the OTLs they can also do bass and highs very well if set-up and used properly.

I would say that overall they are my favorite type of amp...but like you, I have several (types of amp) and enjoy the virtues of all.
I have yet to find anything that is perfect in all cases.

Macintosh is the only SS amp using output transformers that I am familar with.