+ Post new Ad
2 Clean NIB Tightly Matched Pair GE FIVE STAR 5749 Industrial 6BA6 Test NEW NOS+, US $430 – Picture 0
2 Clean NIB Tightly Matched Pair GE FIVE STAR 5749 Industrial 6BA6 Test NEW NOS+, US $430 – Picture 0

2 Clean Nib Tightly Matched Pair Ge Five Star 5749 Industrial 6ba6 Test New Nos+

US $430

  • Elkhorn, Wisconsin, United States
  • Jun 10th
Open on mobile:
QR code
Tightly Matched Pair of Vintage GE 5 STAR 5749 Industrial 6BA6 Amplifier tubes.  Early black plate versions.  Test NEW / NOS+.  Results: TUBE 1:  5,300 mhos / 13.6 mA TUBE 2:  5,500 mhos / 13.2 mA Minimum for this type tube is 2,800 mhos and 4,300 is considered NEW. All checked tubes are tested for shorts/leakage, emissions (mhos) GM measured DIRECTLY in micromhos, plate current (mA) read digitally, and gas/grid current.  A voltage line adjustment is made after every test for best accuracy.  All used tubes will come in white, individually labeled white boxes with recorded emissions and automatically tested plate current ( if applicable).  Matched tubes are within the accepted 10% read value.  All testing is done on a Triplett 3444 quasi-laboratory tube analyzer designed to provide high resolution results for demanding applications.  My particular tester was rebuilt in July 2014 by C.G. Industries using military / industrial precision parts and FULLY calibrated to the exact specifications of the assembly line master model.  All tubes will be shipped with utmost care to insure safe delivery.   I offer a 14-day unconditional guarantee on all tested tubes.  I HAVE SOLD THOUSANDS OF TUBES TO HAPPY CUSTOMERS.  PLEASE CHECK OUT MY FEEDBACK.  NO DISAPPOINTMENTS. Thank you! *NOTE* I've noticed a vast majority of tube sellers on Ebay NOT listing plate current (mA) when trying to match power tubes.  Remember that this reading is much more important than emissions (mhos) when trying to MATCH tubes.   Tubes can have perfectly matched emissions while the plate current is way off.  This is not good because if you can't adjust the bias current, one (or more) tube(s) will run hotter (or cooler) putting undo stress on your amplifier.  That's why it is highly recommended to replace both tubes even if only one fails.  My tester automatically reads plate current (digitally) and I will include that number when applicable in my listing.  Again, this applies a lot more to power tubes such as 6L6, 6V6, 6CA7, 6550, 7027, etc.  than non-power tubes.  

Directions

Similar products from Nixie Tubes & Audio Tubes

JAN-5814A (5814) Vacuum Tube - SYLVANIA - USA - 1969

JAN-5814A (5814) Vacuum Tube - SYLVANIA - USA - 1969

  • Gloucester, Massachusetts, United States
  • Jun 11th
LOT OF (5) NOS 6AZ8 Vacuum Tubes - DUMONT - USA - 1960s (TESTED, FREE SHIPPING!)

LOT OF (5) NOS 6AZ8 Vacuum Tubes - DUMONT - USA - 1960s (TESTED, FREE SHIPPING!)

  • Gloucester, Massachusetts, United States
  • Jun 11th
6SD7 TUBE MADE BY RAYTHEON IN ORIGINAL BOX TESTS GOOD

6SD7 TUBE MADE BY RAYTHEON IN ORIGINAL BOX TESTS GOOD

  • Alfred Station, New York, United States
  • Jun 11th
RCA 6K8G ELECTRON TUBE NOS RADIO VACUUM TUBE BOX TAB DATE (3-46)

RCA 6K8G ELECTRON TUBE NOS RADIO VACUUM TUBE BOX TAB DATE (3-46)

  • Pawtucket, Rhode Island, United States
  • Jun 11th
1 NIB Amperex Holland Westinghouse 813 Transmitting Tube Tested & Guaranteed

1 NIB Amperex Holland Westinghouse 813 Transmitting Tube Tested & Guaranteed

  • Elkhorn, Wisconsin, United States
  • Jun 10th
Lot of 91 Small Vintage Radio / Television Tubes (Lot 36) Untested

Lot of 91 Small Vintage Radio / Television Tubes (Lot 36) Untested

  • Temperance, Michigan, United States
  • Jun 10th
2 NIB Matched & Balanced Pair Raytheon 5U4GB Rectifiers Test NEW NOS+ CLEAN

2 NIB Matched & Balanced Pair Raytheon 5U4GB Rectifiers Test NEW NOS+ CLEAN

  • Elkhorn, Wisconsin, United States
  • Jun 10th
RCA Repairman Case full Of Vintage Electron Tubes All Unused In Original Boxes-

RCA Repairman Case full Of Vintage Electron Tubes All Unused In Original Boxes-

  • Westbrook, Maine, United States
  • Jun 10th
1 NOS National Union 6K6G Power Pentode Big Coke Bottle Tests NEW

1 NOS National Union 6K6G Power Pentode Big Coke Bottle Tests NEW

  • Elkhorn, Wisconsin, United States
  • Jun 10th
NIB NOS 1975 Vintage GE 6AW8A Amplifier Receiver tube Tests NEW+

NIB NOS 1975 Vintage GE 6AW8A Amplifier Receiver tube Tests NEW+

  • Elkhorn, Wisconsin, United States
  • Jun 10th
Vintage Philco 80 280 380 ST Globe Tube WE GE RCA Radio Solid Plate Ham HiFi

Vintage Philco 80 280 380 ST Globe Tube WE GE RCA Radio Solid Plate Ham HiFi

  • Owosso, Michigan, United States
  • Jun 10th
2 NIB NOS Matched Pair 1975 Vintage GE 6AW8A Amplifier Receiver tubes Test NEW+

2 NIB NOS Matched Pair 1975 Vintage GE 6AW8A Amplifier Receiver tubes Test NEW+

  • Elkhorn, Wisconsin, United States
  • Jun 10th
3 Triple Matched NIB Sylvania 6AB4 EC92 6664 Hi-Fi Amplifier Triode Test NEW NOS

3 Triple Matched NIB Sylvania 6AB4 EC92 6664 Hi-Fi Amplifier Triode Test NEW NOS

  • Elkhorn, Wisconsin, United States
  • Jun 10th
1 NIB & Balanced RCA 6BL7GTA HiFi Audio Tube BLACK plates SIDE "D" Tests GOOD

1 NIB & Balanced RCA 6BL7GTA HiFi Audio Tube BLACK plates SIDE "D" Tests GOOD

  • Elkhorn, Wisconsin, United States
  • Jun 10th
Vintage Silvertone 80 280 380 ST Globe Tube WE GE RCA Radio Solid Plate Ham HiFi

Vintage Silvertone 80 280 380 ST Globe Tube WE GE RCA Radio Solid Plate Ham HiFi

  • Owosso, Michigan, United States
  • Jun 10th
2 Matched vintage Sylvania 12AU7A/ECC82,Amplitrex strong tested & auditioned.

2 Matched vintage Sylvania 12AU7A/ECC82,Amplitrex strong tested & auditioned.

  • Sunny southeast, United States
  • Jun 10th
2) RCA Type 38 Antique Radio Vacuum Tubes ~ TV-7 Tested

2) RCA Type 38 Antique Radio Vacuum Tubes ~ TV-7 Tested

  • Coweta, Oklahoma, United States
  • Jun 10th
Raytheon Electron Tube - 6AM8

Raytheon Electron Tube - 6AM8

  • Seven Valleys, Pennsylvania, United States
  • Jun 10th
RCA Radiotron Electron Tube - 6BF5

RCA Radiotron Electron Tube - 6BF5

  • Seven Valleys, Pennsylvania, United States
  • Jun 10th
GE Electron Tube -6BA8A

GE Electron Tube -6BA8A

  • Seven Valleys, Pennsylvania, United States
  • Jun 10th

People who viewed this item also vieved

DATA BOOK DIODES EDITION 48 1981

DATA BOOK DIODES EDITION 48 1981

  • Garland, Texas, United States
  • Jan 29th
DATA BOOK DIGITAL INTEGRATED CIRCUITS EDITION 14 1983

DATA BOOK DIGITAL INTEGRATED CIRCUITS EDITION 14 1983

  • Garland, Texas, United States
  • Jan 29th
Multilayer Ceramic Capacitors MLCC - SMD/SMT 50volts 0.8pF (1000 pieces)

Multilayer Ceramic Capacitors MLCC - SMD/SMT 50volts 0.8pF (1000 pieces)

  • Potomac, Maryland, United States
  • Jan 29th
88-108-MFD 330 VAC----Vanguard Motor Starting Capacitor New

88-108-MFD 330 VAC----Vanguard Motor Starting Capacitor New

  • Stephenville, Texas, United States
  • Jan 29th
900M-T-1C Replaceable 936 Soldering Perfect Solder Iron Tip

900M-T-1C Replaceable 936 Soldering Perfect Solder Iron Tip

  • LongGang District, Shenzhen City, China
  • Jan 29th
Continental Specialities Proto-Board 203A Powered Breadboard

Continental Specialities Proto-Board 203A Powered Breadboard

  • Valencia, California, United States
  • Jan 29th
Tektronix Custom Hybrid IC. Part Number 155-0091-00. Tested.

Tektronix Custom Hybrid IC. Part Number 155-0091-00. Tested.

  • United States
  • Jan 29th
Vintage USSR IC ( ALU ) Collection QTY = 123 pcs ALL different models K155 etc

Vintage USSR IC ( ALU ) Collection QTY = 123 pcs ALL different models K155 etc

  • Europe, Ukraine
  • Jan 29th
100Pairs 3Pin Waterproof LED Connectors for RGB Strip outdoor party Xmas Express

100Pairs 3Pin Waterproof LED Connectors for RGB Strip outdoor party Xmas Express

  • Shenzhen, Guangdong , China
  • Jan 29th
10 Pairs 3Pin Waterproof LED Connectors for RGB Strip light outdoor party XMAS

10 Pairs 3Pin Waterproof LED Connectors for RGB Strip light outdoor party XMAS

  • Shenzhen, Guangdong , China
  • Jan 29th
ADD/DROP WDM EDFA NC FILTER COUPLER 100Ghz C & L BAND ITU: 35 1549.32nm AVANEX

ADD/DROP WDM EDFA NC FILTER COUPLER 100Ghz C & L BAND ITU: 35 1549.32nm AVANEX

  • Thessaloniki, Thessaloniki, Greece
  • Jan 29th
ADD/DROP WDM EDFA NC FILTER COUPLER 100Ghz C & L BAND ITU: 35 1549.32nm OCLARO

ADD/DROP WDM EDFA NC FILTER COUPLER 100Ghz C & L BAND ITU: 35 1549.32nm OCLARO

  • Thessaloniki, Thessaloniki, Greece
  • Jan 29th
NEW PowerBright 1000 Watt Voltage Regulator Converter 110-220 Volts

NEW PowerBright 1000 Watt Voltage Regulator Converter 110-220 Volts

  • Wilmington, North Carolina, United States
  • Jan 29th
Tube of 94 Motorola MC78L09ABD +9 VDC Regulator Case 751 - NOS

Tube of 94 Motorola MC78L09ABD +9 VDC Regulator Case 751 - NOS

  • Vaudreuil-Dorion, Quebec, Canada
  • Jan 29th

By clicking "Accept All Cookies", you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts.

Accept All Cookies