[Auction for this amp]
https://buyee.jp/item/jdirectitems/auction/q1207898486
https://auctions.yahoo.co.jp/jp/auction/q1207898486
[Auction agent]
https://baggageforward.co.jp/en/
[YouTube]
https://youtu.be/vpfw30-gXhk

ECL82, 6BM8, 6BM8-HiFi, 11BM8, and 8B8 can be used with internal heater voltage adjustment.

[Auction for this amp]
https://buyee.jp/item/jdirectitems/auction/n1200008961
https://auctions.yahoo.co.jp/jp/auction/n1200008961
[Auction agent]
https://baggageforward.co.jp/en/
[YouTube]
https://youtu.be/m1jbgbJ5lUg

[YouTube]
https://youtu.be/kwkIxQhXLGM

[YouTube]
https://youtu.be/qhb8XB1zf24

[YouTube]
https://youtu.be/VqDsMYWEkTE

[YouTube]
https://youtu.be/XrHf9pTulmw

[YouTube]
https://youtu.be/eCca3zGZi8c

[YouTube]
https://www.youtube.com/watch?v=ZaJIwaGPxjI

[YouTube] https://youtu.be/_dEbNIbPCBY