SKU:80674071939
2 US-Made 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing Lot Of Two
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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Description
2 US-Made 1625 / VT-136 Vacuum Tubes Milspec NOS-Testing Lot Of TwoThis new old stock testing matched pair of US made 1625 VT 136 output triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 68 for Tube One and 78 for Tube Two where minimum (65%) is 40 and 100% is 62. These tubes have excellent flashing; Micanol bases; double, dimpled sheet getters and two additional support rods per tube for increased rigidity and lowered
This Moss Music Group DBX pressing has no surface noise but a very few pops and ticks
Tube One measured 54 while Tube Two also measured 54
new in box RCA 7C7s tested to spec on our Paul Hart-calibrated TV7/U
Not for use in guitar and bass amps
Tube Two measured 10
It is a bit microphonic
short base
Both measured 72 where minimum (65%) is 58
Their filaments are spirally-wound -- hence the "S" in "ECC83S" -- for low noise operation
new in box US-made 5J6 tubes tested to spec on our Paul Hart-calibrated TV7/U
10-15% OF THEM ARE NOT SUITABLE FOR HIGH END AUDIO APPLICATIONS
This NOS-TESTING matched pair of Sylvania 6BG6G output tubes was tested on our Maxi-Matcher with 400 volts on the plates and a bias of -48 volts for shorts
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