Matched pair 6N8S 1578 tubes. Extremely rare military version of the 6N8S with round holes anode and 1578 stamp. New old stock, never used. Tested and matched on Amplitrex AT1000. These are a a direct replacement for the 6SN7 tube and are highly sought after for their great sound.Has date-matched made in 1980 on each tube. Guaranteed to be the real deal, beware of the many counterfeits flooding the market. A true 1578 tube will have this number stamped on the side in addition to the MELZ Factory Stamp. Made for Russian nuclear and military applications these were never available for free sale. The item "Matched pair Extremely rare 1578 6N8S audiophile 6H8S 6SN7 Metal base" is in sale since Monday, June 3, 2019.
This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "businkaolya" and is located in Ural. This item can be shipped worldwide.