For your consideration ...A lot of 12 vintage Sylvania / GE 5U4 tubes. All are tested on our B&K 707 Dyna-Jet Dynamic Mutual Conductance tube tester. You can see the test scores in the first pictu

 

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Hi and thanks for looking. This is a seller ships world wide auction and all are welcome to bid. Pulled from a working Conn organ gutted a few days ago. Tons of these being sold on eBay from time to t

 

The Natrometer, a great invention in it's day. It was sold by the National Radio Institute in 1925. There were extra cylinders available at the time so as to not have repetition in the code. It is run

 

Dynaco FM-3 tube tuner kit. this a complete kit. Original owner did start building completing only steps #1& #2 , he did open the boxes and do an inventory there are check marks on parts list. inc

 

This Denon DP-45F turntable is in very good condition for its age! The plastic cover has some scratches from being wiped down over the years, but no gouges or anything like that. The turntable body is

 

i only ship to addresses in the usa sorry ,here we have a nos rca vacuum tube 6eg magic eye , i have no way of testing it, it looks great in original cardboard sleeve not original box,there is some ox

 

In excellent working condition, cosmetically it is good, but on the top there look to be some tape residue spots, looks like someone may have chipped a little of the brown paint when trying to remove

 

NATIONAL UNION ( NU ) 6113 / 6SL7 TUBE , Selling as used but may be New Old Stock. No Box. SIDE "O" GETTER Black Smoked Glass. MADE IN USA. Tested Good at 102% on my Sencor TC142 Tester. Check out my

 

Your bidding on one D9 crossover. One nob post is slightly bent. Plastic is perfect. Most importantly the electronics work as they should. Any questions ask please. Thanks