Phono pre amp question.

[Cal Weldon]

We have occasional glitches in the system. They were apparently deleted at one time but I see now Variac has had to delete the same ones.

 

[Wavebourn]

Here is one more version of Bokarev's phono preamp:

An externally hosted image should be here but it was not working when we last tested it.

 

[Wavebourn]

Any suggestion of a tiny Russian power tube to pair with it? 😀

I found some except 6П37Н that actually is a huge nuvistor.

Miniature output tubes are:

6П25Б (6P25B) 4.1W ''Èñòîê2''. Ðàäèîëàìïû - ïî÷òîé. Ïàðàìåòðû è õàðàêòåðèñòèêè 6Ï25Á-Â

6П30Б (6P30B) 5.5W ''Èñòîê2''. Ðàäèîëàìïû - ïî÷òîé. Ïàðàìåòðû è õàðàêòåðèñòèêè 6Ï30Á

6П35Г (6P35G) 5.2W Ëàìïî÷êà èëüè÷à - ðàäèîëþáèòåëüñêèé ñàéò

 

[DennSPb]

Here is one more version of Bokarev's phono preamp:

An externally hosted image should be here but it was not working when we last tested it.

Very interesting...

 

[Jenyok]

Super miniature tube 6N17B, 6N16B.
RIAA corrector.
Super miniature tube 6S17K, 6N16B.
RIAA corrector.
.
Find OTL scheme for 32 Ohm headphones on NUVISTOR 6P37N (6П37Н Russian character).