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Matching 12AX7 Vacuum Tubes on a Tektronix 576 Curve Tracer
audiotubes
953 views
The Tektronix 576 curve tracer, originally designed for matching transistors, can be modified to match vacuum tubes. Unlike a tube tester, the curve tracer can operate a t...
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Matching 6V6 Vacuum Tubes With The Tektronix 576 Curve Tracer
audiotubes
1,742 views
This video shows our new method of matching power triodes, pentodes, and beam power tubes. We are using a specially modified Tektronix 576 curve tracer. It has custom mod...
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How to Spot Super Rare 12AX7 Vacuum Tubes part I
audiotubes
29,989 views
This short video briefly touches on some of the most famous and sought after 12AX7 NOS vintage tubes. Featured are the very rare Mullard longplates, Amperex Bugle Boy and ...
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Ghost Photographed at Fort Point, San Francisco
audiotubes
2,903 views
Happy Halloween from audiotubes.com We don't have a tube video today, just a short and spooky video of how we photographed a ghost at Fort Point in San Francisco, CA, in...
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How to Spot Rare German 12AU7 Tubes featuring the RARE Siemens Silver Plate!
audiotubes
8,389 views
Watch a brief video showing some rare German made NOS 12AU7/ECC82 tubes. This features the super-rare Siemens silver plate 12AU7, said to sound as good as the legendary Te...
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How To Spot a NOS 6550 / KT88 Vacuum Tube
audiotubes
16,470 views
This video highlights the most popular 6550 and European KT88 tubes that are new old stock. These tubes are used in hi-fi as well as musical instrument amps, and the vinta...
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How To Spot A Vintage 6SN7GT Vacuum Tube, Pt. 3
audiotubes
3,221 views
The conclusion of a brief survey of the more common vintage 6SN7GT tubes. Included are the full line of Sylvania types, their Chrome Dome types, and other brands that were...
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How To Spot A Vintage 6SN7GT Vacuum Tube, Pt. 2
audiotubes
3,749 views
More vintage 6SN7GT tubes are profiled here. These are the more common ones that are still rather plentiful today, in spite of being out of production for 35 years! Be su...
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Part II How to Spot a NOS EL34/6CA7 Vacuum Tube
audiotubes
8,261 views
More rare vintage EL34 vacuum tubes. These include the xf3 and xf4 types by both Mullard and Amperex, the xf5 type by Amperex, and the 1970s Japanese made versions. Shown...
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How To Spot a NOS 6L6GC Vacuum Tube
audiotubes
20,851 views
The most popular vintage NOS 6L6GC vacuum tubes are showcased in this video. Included are the rare KT66 and 350B types as well as RCA blackplates, GE, and Sylvania 6L6GC t...
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