• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Gold mine of DI¥ audio tubes schematics from Japan

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Thank you!

Soundhappy,

I just discovered this thread and wanted to thank you for your work putting it together. Also please express sincere thanks to those in Japan for making this material available.

I also very much enjoyed the historical photos of the Japanese culture.

FANTASTIC!!!

Again, thank you!

Kind regards,

Steve
 
Last edited:
but were output transformers and 300b tubes any cheaper ? (they make some great OPTs in Japan)

Vintage Tango, Tamura , tubes can be find on the local used gear " second hand " market
and in small electronic components boutiques as well.

This one was the prefered shop of Sakuma Susumu Sensei

佐久間駿 コンコルド 真空管アンプ

New OPTs is produced and phone number and web link is included etc.

MJ1901_(07)appendix_transformer-handbook.pdf - Google Drive

Enjoy :)
 

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どうもありがとうございます
Domo arigato gozaimasu
 

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+
 

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