6C33 Vacuum Tube

[Paul Birkeland]

You can't get DC without at least one diode...

[RayP]

Since it appears that the amp is made in Hungary, I think we can give them a bit of leeway with their use of English.

By the way, here is a partial review.
https://www.stereophile.com/content/another-green-world

However $10k does seem to be a bit excessive even though the casework looks beautiful.

Incidentally, take a look at their GU-81 amp with the yellow coverings for the B+ which presumably is well over 1000 volts. Definitely too scary for me to even contemplate building.

http://www.tubeguru.eu/poweramps/

Another example of the GU-81 -
https://arstechnica.co.uk/gadgets/2016/03/icon-audio-mb-81-russian-valve-amp-200w/

Somehow I don't think there will be a Bottlehead headphone amp using these tubes in the near future.

ray