Pair, Vintage Tung - Sol Type 6550 Radio Audio Output Amplifier Tubes, Good
Item History & Price
You are bidding on apair of Tung-Sol type 6550 radio/audio amplifier tubes. One is branded TI (Texas Instruments), and is an earlier example with solid plates. The other is branded General Electric. On my Amplitrex AT1000 tester, the TI tests with 80% emission, Em and 88% grid emission, Gm, while the GE tests at 75% Em and 86% Gm. So they are good strong tubes with nearly matched grid emission. The octal key is broken off on one, so care needs to ...be taken when placing it in a socket. They are guaranteed to be good strong tubes that should be a great sounding pair. Shipping weight is 13 ounces. Please see my other auctions for more interesting radio and audio items, and tubes.
