Both the Owner's Manual and the Advanced Functions Handbook for the HP 15C in the preferred spiral-bound format. The covers show discoloration that I think is mainly from age. Please look at the pictu

 

Nice external appearance; actually used for decoration. Brown possibly bakelite material in great shape without cracks. Knobs present. Evidence of inside entered for possible repair. Measures 12 X 8 X

 

I have had these tubes for years. I think my dad had them when he repaired TVs many years ago. I think they are brand new. The 7025 s have 12AX7 hand written on the box. One tubes says made in USA but

 

You are bidding for a QUARTET of: PHILIPS Miniwatt 12AX7 ECC83, Ring "o" getter, made in Holland Heerlen plant, 1960´s production. Great tube sound, recommended for critical audio applications. Were

 

20x ITT 35W4 NOS Tubes Description I have for sale a wholesale lot of 20x 35W4 sold under the ITT brand. All tubes are unused from a factory box; I have plenty more available if anyone is interested,

 

Vintage Sony Stereo Walkman WM-30 This is an estate find. Pictures provided. I have tested the walkman and playback worked just fine, but ultimately this unit will be listed "as is" due to the age of

 

THE BIDDER MUST HAVE MINIMUM 50 EBAY POINTS. 5 x Tubes Telefunken ECC83 with Diamond ( <> ) and good Values ( look to the Picture ). I tetsed the Tubes on two Systems. The Tubes are USED. I make

 

3 Vintage Raytheon 6L6GB Tubes 1 NOS & 2 Used Testing NOS These tubes are tested in my Hickok AN/USM-118 Military tube tester! This tester is what the professional use in the tube business and is

 

JBL 2441 alnico large format driver similar to 376. A full restoration for cosmetics and performance. New paint as needed, rotted foam in back cap replaced, disassembled and cleaned. Magnetic surfaces

 

First off; before I get into tube detail I want to describe how my tubes are tested. I test all my tubes with a state of the art tube tester which is a computerized Western Electric - Hickok KS-15874-