This auction is for a B&K model 700 Dynamic Mutual Conductance Tube Tester. This tester is for parts or repair. This tester was found at a estate sale along with other test equipment. The tester l

 

Vintage metal base Mullard EL34. No reserve.

 

Vintage Tube 12AX7A /ECC83 Two (2)International TUBE New in BoxThis is a vintage12AX7A /ECC83 These tubes have only been taken out of the box for pictures and seem to be in factory condition. I don't

 

This is a pair of wall mounts for the Realistic Minimus 77 but should fit several others. These are Shack catalog number 40-2062.  If you have a pair of 5" woofer aluminum body speakers from Radio sh

 

Nice ACROSOUND 20-20 tube amplifier ULTRA-LINEAR POWER TUBE AMP Nice Rare and very Desirable Acrosound 20-20 stereo amplifier featuring Mullard EL84 outputs I have enjoyed this amp for years Features

 

Heathkit RLC Bridge IB-5281 >>> FREE SHIPPING <<< I powered it on and tried the three L - X range settings. The meter worked and the level control moved the meter in all three ranges

 

Here we have a RCA 2A3 audio vacuum tube that has been fully tested on a calibrated TV-7B/U for mutual conductance, shorts, and gasses. This tube tests at a strong 72, where 38 is considered minimum g

 

I don't have a tester to make a GM measurement on these tubes. These were manufactured in May of 42 and were purchased as Military Surplus in the 60's by a friend of mine. These are being sold AS-IS,

 

MONTGOMERY WARD'S AIRLINE MULTIBAND PORTABLE RADIO. THE RADIO HAS BEEN TESTED AND IT WORKS WELL ON BOTH HOUSE POWER AND BATTERY. THE RADIO MEASURES 12 INCHES WIDE BY 8 1/2 INCHES HIGH BY 4 3/4 INCHES

 

Vintage Pioneer SX-535 Stereo AM/FM ReceiverThe specifications for this model are:20 Watts/Channel output at 8 ohms, THD 0.8%, power band-width 10 Hz-70 kHz, and inter-modulation distortion 0.8%The tu