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New old stock 9 pin miniature triode pentode. This tube was designed as a quiet 7199, but has the pinout of a 6GH8. So it requires an adapter to replace the 7199.
New old stock 9 pin miniature triode pentode. This tube was designed as a quiet 7199, but has the pinout of a 6GH8. So it requires an adapter to replace the 7199.