B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 0

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 1

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 2

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 3

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 4

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 5

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 6

B&K Dyna-Jet Model 707 Tube Tester... Dynamic Mutual Conductance w/Manuals., US $275.00 – Picture 7

B&k Dyna-jet Model 707 Tube Tester... Dynamic Mutual Conductance W/manuals.

US $275.00

Saint Louis, Michigan, United States
Feb 27th

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This B&K 707 is in working condition. I have tested over 20 different tubes with accurate readings, verified by my Hickok 6000a tester. Inside panel is in very nice condition as you will see in the pics. Outside box shows wear..... 2 sets of tube charts both original, 1 set never used....The B&K 707 is the ultimate professional-grade tester for: a shop technician who services tube gear on a regular basis, allowing fast screening of tubes with minimal time expended. Solid build quality allows years of low-maintenance operation and reliability. a tube seller who values his or her time and appreciates convenience/simplicity any user wanting a good quality tester with maximum simplicity of operation and speed of use. Personally, I can easily say that the B&K 707 or 700 is my #1 rated tube tester for anyone who fits those criteria. If you only test tubes occasionally, or have a small tube collection, or feel the urge to write down “accurate mutual conductance scores” (not that any single Gm score actually exists…), …then for these folks you would certainly place less emphasis on the convenient Dyna-Jet sockets, and will want a different tester. For my needs — the ability to save time and test a large number of tubes, the B&K 707 or 700 is an ideal shop tube tester. Pros: Dyna-Jet sockets make testing multiple-section tubes fast, efficient, and with mutual conductance test method (of course, Diodes/Rectifiers are quickly tested for Emission). If you are testing a large number of tubes, the experience is a true pleasure that has no equal. Very high build quality. Tests modern Compactron, Novar, Magnoval tubes. Overall ‘good’ shorts and leakage test, but not perfect in either respect. Excellent choice for testing modern sweep tubes. The #83 rectifier tube can be easily replaced with cooler and more efficient solid-state diodes. Documented calibration procedure. Manual is well written, excellent documentation, detailed explanation of the circuitry. The Tube Data Charts list modern tubes that many testers cannot test. Top choice for any high-volume tube vendor or hobbyist that is testing a large number and wide variety of tubes. The 700-707 will give you a quality test and the ability to weed out the duds quickly and efficiently.