Atmasphere...When transponders (radar response avionics for planes) were first introduced they were all transistorized except for the output device which was a traveling wave tube. The high RF frequency used by the transponder was cited as the reason for the TWT. The TWT was a frequent failure item. Thank God it has now been universally replaced by transistors.
The switching frequency of digital audio amps is well below 2 MHz, and solid state power devices have no problem at such frequency. My CI D200s (UcD) switch at around 400 KHz and my CarverPro ZR1600s (TriPath) are up to about 1.5 MHz.
I wish I could afford one of your OTL amps, which I believe exploit the benefits of tubes without their drawbacks (except cost).
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The switching frequency of digital audio amps is well below 2 MHz, and solid state power devices have no problem at such frequency. My CI D200s (UcD) switch at around 400 KHz and my CarverPro ZR1600s (TriPath) are up to about 1.5 MHz.
I wish I could afford one of your OTL amps, which I believe exploit the benefits of tubes without their drawbacks (except cost).
.