2 Raytheon 5751 3X mica amplifier tubes. TV-7 test strong.

Description

2 Raytheon 5751 3X mica amplifier tubes. TV-7 test strong.
2 Raytheon 5751 3X mica amplifier tubes. TV-7 test strong.
Click images to enlarge
Description
Pair (2)
Raytheon
Type 5751
amplifier tubes.
3X Mica
Military grade 12AX7/ECC83
TV-7/U test strong.
Up for bids is a very nice pair of Raytheon 5751 twin triode audio amplifier tubes.
The Raytheon 5751 is a ruggedized military grade version of the 12AX7 so it can take some physical abuse without adverse results.
The 5751 offers lower gain than the 12AX7 but as lower gain cuts down on microphonics and noise, it's perfect for hi-fi amplifiers.
The silk-screened labeling is good on both tubes.
They were tested for gas, noise, shorts and transconductance (Gm) on my Dan Nelson calibrated TV-7/U tube tester.
The TV-7/U minimum recommended value (65%) for each plate of the 5751 tube is 32 (Gm=800).
Pictured left to right with TV-7/U test results and Gm:
TV-7/U             Gm
1.     48   52       1200  1300
2.     44   45       1100  1125
From a Gm standpoint, both tubes match within 11.5%
.
Click on any picture to enlarge it and get a better look at these Raytheon 5751 military grade, triple mica amplifier tubes.
They will ship as pictured, double bubble wrapped and carefully packed to ensure safe delivery.
All test results are guaranteed to be accurate however no warranty is expressed or implied as to how tubes will perform in any audio application.
Please visit my other auctions. When possible, I can combine into one shipment, up to five tube auctions purchased on the same day and save you money on shipping.
Read my feedback!
I pack and ship to you, the way I would want you to pack and ship to me. I
strive to ensure your entire buying experience rates 5 stars.
Winning bidder makes payment within 2 days
of the auction with USPS First Class Mail delivery.
Please read the fine print below!
Thank you for bidding & Good Luck!
1. Questions?? Please contact me BEFORE bidding!
2. As with all used electronics, this item, unless stated otherwise, is
sold as-is with no guarantees.
3. Returns are only accepted where
my description was inaccurate.
The pictures are a major part of the description. Enlarge and preview them before bidding, please.
4. Payment to be received within 2
days
of the auction.
5. Winning bidder in the State of Florida adds 7% sales tax.
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