Try a google search. They are out there available for purchase.
https://www.tubemonger.com/MP_MINT_NOS_Tungsram_PCC88_Jan_Feb_MAR1971_Hungary_p/756.htm
https://www.tubemonger.com/MP_MINT_NOS_Tungsram_PCC88_Jan_Feb_MAR1971_Hungary_p/756.htm
How the hell do you select a tube?
Try a google search. They are out there available for purchase. https://www.tubemonger.com/MP_MINT_NOS_Tungsram_PCC88_Jan_Feb_MAR1971_Hungary_p/756.htm |
Here are a couple compilations, regarding the presentation (etc) of various 6922 iterations: (https://www.head-fi.org/threads/6922-tube-review-17-top-6922-6n23p-e88cc-cca-7308-e188cc-tubes.76107... ) and: (http://www.audiotubes.com/6dj8.htm) +1 on Brent Jessee Recording as a top source, for info and tubes. |
Further info: http://hktubeaudio.homestead.com/files/6dj8.html |
I would suggest reading through threads on the PS Audio website Forum. Lots of BHK 300 users commenting on their direct experiences: https://forum.psaudio.com/t/bhk-signature-250-or-300-tube-rolling/2652/254 https://forum.psaudio.com/t/since-my-first-bhk-300-thread-got-sort-of-hijacked-heres-mine-on-evaluat... There very nice amps for the dollar, and they can be moved around sonically via tube choice. I liked Amperex 6922 White Labels from the early '60's a lot. |