800x600 1 perfectly matched pair Georg Neumann BV33 Moving-coil inputtransformers made in 1970’s Serialnumbers: 151 + 152 Ratio: 1:20 Permalloy core + permalloy double-shielding Source-impedance: 3

 

You are bidding on a two type 6SN7GT radio tubes. One is a new in the box Tung-Sol labeled JAN CTL 6SN7WGTA. The other is internally identical but only labeled 6SN7GTB on the top of the tube, but it h

 

Hewlett-Packard 82087A AC Power Adapter Hewlett-Packard 82087A AC Power Adapter for HP 31C, HP 33C, and HP 34C. 90-120V, 50-60Hz, 1.8 VA Max, 10V AC Condition: Very good used condition. Because my ite

 

Vintage 1970's NATIONAL SEMICONDUCTOR SCIENTIFIC CALCULATOR Includes the brown, leather-like case and the Instruction pamphlet. It takes 3 AAA batteries and it works well when they are inserted. There

 

MASTER INSTRUMENTS H ATTENUATION NETWORK 600 OHM IMPEDANCE ACCURACY +/- 1% +/- 0.05dB WRINKLE FINISH ALLOY FACE PLATE, SEE PHOTOS. LOOKS GREAT, SEE PHOTOS. VINTAGE! COMES EXACTLY AS SEEN, SOLD AS IS -

 

Here is a beautiful, well-made record weight made by Mapleshade. The system consists of a heavy brass ring, a wooden centering device, and a 10" translucent disk used to couple your vinyl album to the

 

Hello... up for your consideration is a Sovtek/Fender 5881WXT/6L6WGC beam power tetrode vacuum tubes, part number 039214. This tube has been tested, and works as it should. Item will be sold AS IS; NO

 

Here's a very nice Western Electric 249-B tube from the collection of an engineer who worked for AT&T I the 40's & 50's. Please note, if you send me the settings for my Hickock 533 or Sylvania

 

This auction is for a good used vintage Silvertone-branded, Sylvania-made type 12AX7A twin triode vacuum tube. This tube tested great on a reliable B & K Dyna-Quik Model 550 tube tester (a dynamic

 

I am thinning my tube collection as I need money more than tubes at the moment. Here i am selling a two 6l6gc tubes, one RCA black Plate and one Sylvania grey plate. I buy and sell nothing but nos or