SKU:37686173971
Matched Pair Amperex 6BL8 Vacuum Tubes Valves 7199 Substitute
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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
Description
Matched Pair Amperex 6BL8 Vacuum Tubes Valves 7199 SubstituteThis matched pair of Amperex 6BL8 pentode triode tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 41 41 for Tube One and 43 41 for Tube Two where minimum (65%) is 34 36 and 100% is 52 55. As I write, I am listening to them with adapters in my Dynaco Stereo 70. They make excellent 7199 substitutes and sounded great in my amp. They were played with
This Sylvania triple mica 12AU7A / ECC82 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts
All were made by Sylvania
new in box US-made 22KV6 / 22KV6A tubes tested to spec on our Paul Hart-calibrated TV7/U
These seven 6A6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts
new in box RCA 6DQ6B / 6GW6 tubes tested to spec on our Paul Hart-calibrated TV7/U
There was no shorts or gas
These six 12BY7 / 12BY7A / 12BV7 tubes tested as follows on our Paul Hart-calibrated TV7/U where minimum (65%) is 46:
Top: crenelated
This lot of five US-made new old stock
RCA-LABELED ECC189 / 6ES8 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts
Transconductance measured 2020 micromhos for Tube One and 1630 for Tube Two
new in box US-made 1S5 tubes tested to spec on our TV7/U
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