SKU:59145894597
Valvo 12AT7 ECC81 Vacuum Tube For Your Univalve
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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 29 - Aug 3
Description
Valvo 12AT7 ECC81 Vacuum Tube For Your UnivalveThis Valvo 12AT7 ECC81 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured an underwhelming but well balanced 40 42 where minimum (65%) is 50 50 and 100% is 77 77. This tube has nice silkscreening; a flared base; sutured tops and excellent flashing. It sounded great in my Bottlehead, though is not recommended for this headphone amp which was designed for
Tube Three measured 76/76 where minimum (65%) is 50/50 and 100% is 77/77
(New 6679s typically test within 1
They have REI and Y3E date codes
It has shiny gray rounded plates
Etsy will indicate how many tubes are available in this Dutch auction
These eleven US-made 6AR11 tubes tested to spec on our Paul Hart-calibrated TV7/U
This milspec (US Navy) Ken-Rad CKR-78 / type 78 tube tested to spec on our Paul Hart-calibrated TV7/U
4 milliamps where new Russian EL84s typically test from the mid 20s to mid 60s with transconductance from 5000 micromhos
These three RCA 6MD8 tubes are new old stock
new in box RCA 6HF5 tested to spec on our Paul Hart-calibrated TV7/U
These two photomultiplier tubes could not be tested and are sold as-is
The board and lens comprise one unit
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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