NOS NIB pair of tube amp MicroPhone transformers 300CT to 50K impedance, they are about 1.5 x 1.75 x 3" excluding solder terminals. You get a very clean pair, with an original box.

 

Technics Model SB-F1 2-way speaker Please review all pics

 

This is a single lot of four reels of TDK Audua LB-1800 tape for reel to reel recorders. This is the stuff that the professional labs used, and is the tape that most manufacturers used when calibratin

 

Up for auction. A pair of beautifully restored AR-3a speakers with original ALNICO woofers. During the restoration, all original material was used from Vintage AR. Replaced the old scratchy potentiome

 

Up for bids is a pair of Amperex Orange Globe ECC83 12AX7A Tubes. These tubes have orange globe logo with a halo getter. Date codes are ?/Delta9I2, ?/Delta7J5. Tubes were tested on our calibrated TV-7

 

vintage zenith solid state circle of sound clock radio in great condition works great!

 

Perfect operating order. Original Walnut Case, Operating and Service Manuals included. This unit is owned by a retired electronics engineer who has kept it in tip top shape for more than 25 years. Onl

 

Here is a great buy at 2 tubes. all tested on our hickock 533 tester. both triodes mutual contance was reading steady and true at 1100-1200 micromhos on each plate . 1250 is the rating for a brand new

 

Here is a Matched Pair 1952 Sylvania 6SN7WGT Tubes. They have black "T" plates. Testing these tubes with my Hickok 539B Tube Tester where 3000 uMhos is considered by the data book to be NOS, these tub

 

Here we have 14 RCA 7895 Nuvistor tubes. All test strong between 80 and 120 where 68 is the minimum All tubes test good with no shorts or leakage. Tested on a B&K 707 Dynamic mutual conductance tu