What tubes/models of lathe cutting amplifiers were used at the beginning of the electrical age of recording?

[freddi]

I would assume they were single - ended and relatively low powered (?)
Such info mig5h give insight as to the "tone" of records cut in that early period.

 

[gijser]

I think only direct heated triodes existed then.

 

[rayma]

https://www.psaudio.com/blogs/copper/around-the-world-in-80-lathes-part-28

 

[freddi]

Many thanks - I'd like to see some schematics for their amplifiers too sometime.

 

[rayma]

Try asking these guys.
https://lathetrolls.com/index.php