2 RCA 6SL7GT black plate smoked glass amplifier tubes. Both TV-7 test strong.

Description

2 RCA 6SL7GT black plate smoked glass amplifier tubes. Both TV-7 test strong.
2 RCA 6SL7GT black plate smoked glass amplifier tubes. Both TV-7 test strong.
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Description
Pair (2)
RCA
6SL7GT
Black Plate,
Smoked Glass
Amplifier tubes.
1954 production.
TV-7/U test strong.
Up for bids is a pair of RCA 6SL7GT twin triode audio amplifier tubes.
Both tubes were tested for transconductance (Gm), gas, noise, and shorts on my Dan Nelson calibrated TV-7/U tube tester using a digital meter for greater accuracy.
For the 6SL7GT to be considered "new" each plate needs a TV-7/U reading of 64 (Gm=1600*).
The TV-7/U minimum recommended value (65%) for each plate of the 6SL7GT tube is 32 (Gm=800).*Data is from the RCA Receiving Tube manual.
Pictured left to right with TV-7/U test results, Gm, production codes/dates and relative strength to NOS specs:
TV-7/U              Gm             Date code/date
Relative Strength
1.    48   48       1200  1200        439  September 1954
79%
2.    45   44       1125  1100        439  September 1954
74%
From a Gm standpoint, both tubes match within 2% and are
nicely balanced from plate to plate.
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 up to five tube auctions purchased on the same day and save 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 bidders in the State of Florida add 7% sales tax.
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