[glonq]

Immediately reminded me of "Telefunken U47". RIP Frank Zappa.

[cf100clunk]

Telefunken slapped their name on the pairing of the legendary Neumann U47 microphone with their amplification for the USA market:

https://wikiless.org/wiki/Neumann_U47

So Frank was correct to use the Telefunken U47 term, but audiophiles and engineers found it a bit misleading.