Up for sale is a vintage Tung-Sol 6SU7GTY vacuum tube featuring desirable black glass construction and brown micanol base. This tube is marked “AGED 48 HOURS”, indicating factory quality-control aging and testing prior to release. The 6SU7GTY is a premium low-noise industrial and military-grade tube highly regarded by collectors, audiophiles, and vintage electronics enthusiasts. Details: * Manufacturer: Tung-Sol * Tube Type: 6SU7GTY * Brown Micanol Base * Black Glass Construction * Marked “AGED 48 HOURS” * Made in U.S.A. Condition: * Untested due to lack of testing equipment * Getter flash remains intact * No cracks or chips observed
AMPLITREX TESTED RESULTS ARE ON BOX.
These are the extremely rare and impossible to find Dark Brown base variation. Both tested NOS on an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1- 91/91% ip 100/100% gm Tube 5- 121/126% ip 112/112% gm
New In Box Tung-Sol 6L6GC STR Reissue Factory Matched Tube Pair. Tubes are burned in, tested and matched at the factory. Factory test results are on factory sticker label on the box. These are plug and play, ready to go.
Matched with a new Maxi Matcher 2.