Matched Pair OTK 6N1P 6H1П 6BQ7 6DJ8 ECC88 Milspec Vacuum Tubes New From Bulk Box Best Of Hawaii Calls

Matched Pair OTK 6N1P 6H1П 6BQ7 6DJ8 ECC88 Milspec Vacuum Tubes New From Bulk Box Best Of Hawaii CallsThis matched pair of new from bulk box, milspec OTK 6H1 6H1P 6BQ7 6DJ8 ECC88 dual triodes was tested on our Paul Hart modified TV7 U for shorts, gas and transconductance. There were no shorts or gas. These tubes were tested using 6BQ7 settings which are the closest US European tube type to this Soviet tube type. All have the OTK rocket and 8911 date codes. They measured 35 33 for Tube One and 35 35 for Tube Two. Minimum (65%) is 26 26 for the similar

An eight out of ten

"Britain" is printed on the tube itself and there appears to be an incomplete Amperex-style code near the base

These four Ken-Rad tubes tested as follows on our Paul Hart-calibrated TV7/U:

"Mama Told Me Not To Come" is the beginning of Side C and the songs following it finish out the remaining LP

Wish I could tell you how they sound

These four RCA 7551 tubes tested as follows on our Paul Hart-calibrated TV7/U:

new in box Sylvania 12W6GT tube tested to spec on our Paul Hart-calibrated TV7/U tube tester

This lot of six US-made type 43 tubes was tested our Paul Hart-calibrated TV7/U for shorts

marked for safe-and-easy insertion)

new in box US-made 6AS8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 95%/93% and 95%/94% for Tube Two

likely by GE