Tube Museum New York
About Us
View Cart
My Account
Help / FAQ
Search:
Audio Tubes
Holy-Grail Preamplifier Tubes
Preamplifier Tubes
Power amplifier Tubes
Tuner Tubes
Full & half-wave Rectifiers
More Tubes
12AT7 / ECC81 / ECC801S
12AU7 / ECC82 / ECC802S
12AX7 / ECC83 / ECC803S
ECC85
6922 / ECC88 / E88CC / CCa
Microphone Tubes
Services
Tube Information
6922 / E88CC / CCa Tube Museum Tube Review "TOP 6"
Factory Tube Codes
Siemens Halske Munich Codes
USA Tube Codes
Telefunken German Codes
Mullard U.K. Codes
Philips Holland Tube Codes
Tube Museum on eBay
tubemuseum store
Join our mailing list!
Home
>
More Tubes
>
SYLVANIA NOS 6SN7-GTB Perfect Platinum Matched Pair Tubes
Alternative Views:
Availability::
Subject to availability
Product Code:
SYL-6SN7GTB
Qty:
Description
SYLVANIA NOS 6SN7-GTB
Perfect Platinum Matched Pair Tubes
Triangular Black Plates
ACTUAL PICTURES & TEST MEASUREMENTS OF THE TUBES YOU WILL RECEIVE
Superior TRIANGLULAR-BLACK-PLATE designed for critical industrial applications where 10,000 hour life, close triode section balance, rigid construction and stability are required.
- Cary 805M amps
- Cary 300 SEI
- Mastersound 845 monoblock 2008
- Audio Note M2 preamp
- Aesthetix
10,000 hour low noise Matching Platinum Pair for a 6SN7GTB
ACTUAL PICTURES OF THE TUBES YOU WILL RECEIVE
Rarely do you see such a fine NOS tube pair with Perfect Specifications:
How to read this LCD:
This is side 1 of tube # 1. The factory 100% spec is 9.0 mA and this side tests 10.8 mA or 120%.
The GM or mA/V 100% factory spec is 2.60 mA/V (2,600) and this side tests 3.40 mA/V or 130%
The H-to-K ( which stands for Heater-to-Cathode Leakage)on the top right corner is zero (0) uA Perfect!
You never want a tube with ANY H-to-K Leakage. The mA Gas is normal in a POWER tube, these insignificant micro-gasses burn off anyway during "break-in" which is 56 to 96 hours. THESE ARE 10,000 RATED HOUR TUBES.
YOU SELECT PAIR # 1 or PAIR # 2 or THE QUAD!
Tube # 1: 10.8mA/10.4mA and 3,400/3,400 GM 130%/130% = >100%) (AVAILABLE)
Tube # 2: 9.5mA/10.2mA and 3,400/3,400 GM 130%/130% = >100%) (AVAILABLE)
SELECT ONE (1) FOR A PAIR or BID TWO (2) FOR THE PERFECT QUAD! ...
Tube # 3: 9.6mA/9.7mA and 3,400/3,400 GM 130%/130% = >100%) (AVAILABLE)
Tube # 4: 9.5mA/9.6mA and 3,400/3,400 GM 130%/130% = >100%) (AVAILABLE)
SELECT ONE (1) FOR A PAIR or BID TWO (2) FOR THE PERFECT QUAD! ...
100% FACTORY SPECIFICATIONS: 9.0mA and 2.600 GM (2.60mA/V) = 100%
Great 1950's USA tube now extinct in NOS or NOS condition! Made specifically for audio in the 1950's in USA!
ACTUAL PICTURES AND TEST MEASUREMENTS OF THE TUBES YOU WILL RECEIVE
COMES IN THE ORIGINAL WHITE BOXES AS DISPLAYED IN THE LAST PHOTOGRAPH
COLOR BOXES NOT INCLUDED AND DISPLAYED FOR HISTORIC REPRESENTATION ONLY!
Superior designed for critical industrial applications where 10,000 hour life, close triode section balance, rigid construction and stability are required. 6SN7GTB BLACK-PLATES were also labelled and synonymous to VT-231
Great USA tube soon to be extinct in NOS!
Related Products...
NOS U.S.NAVY 1944 RCA CRC-6SN7 GT black-plate black-glass MATCHED PAIR
$598.00
Add
TELEFUNKEN 6AV6 6AT6 for McIntosh MR67 FENDER HARVARD
$50.00
Add
NOS KEN-RAD 6SN7-GT VT-231 Ken Rad BLACK BASE MATCHED PAIR
Add
PHENOMINAL E80L 6227 GOLD BWB PHILIPS VALVO HOLLAND NOS
$89.95
Add
NOS GE 12AY7 6072 TUBES for Rode Classic microphone
$99.95
Add
Share your knowledge of this product with other customers...
Be the first to write a review
Browse for more products in the same category as this item:
More Tubes
Preamplifier Tubes