Vintage Harman Kardon HK-17 preamplifier in good cosmetic condition, serviced, cleaned and ready to sing for your ears. Zero static, scratchy sounds and no issues with either channels. Some controls c

 

I HAVE FOR SALE (2) TELEFUNKEN 6BQ5/EL84 USED TESTED VACUUM TUBES,. .(MADE IN WEST GERMANY) (1) TUBE IS BRANDED HARMON KARDON AND THE OTHER IS BRANDED G.E. THEY HAVE GREY PLATES AND TOP HALO GETTERS .

 

The first Portable Calculator commercially produced. Available in 1970. Based on Texas Instruments chip developed at Cal Tech, Pasadena (Dr. Sheldon Cooper?) for more information: http://www.vintageca

 

This auction is for the above pictured vintage circuit board. It measures approximately 2 3/4 X 2 3/4 inches. As can be seen in the photo it contains 3 Blue Raytheon 2N113 CK761 Transistors and 4 Blac

 

For sale is a beautiful and matching quad (this is QUAD I) of Mazda Belvu NIB and unused EL84 / 6BQ5 tubes. All are brand new, with original boxes, have identical date codes 5920 (which indicates 20th

 

100 PIECES TYPE 6AK5 / 5654W ROUND GETTER PENTODE TUBES MADE IN THE USA GREAT FOR AMPLIFIER BUILDER PLEASE ASK ABOUT OUR OTHER NOS NIB TUBES FOR AMPLIFIERS.. WE HAVE OVER 100,000 IN STOCK SELLING OUT

 

Vintage Texas instruments calculator Works great Shows to be in good used condition Fast shipping with instruction manual

 

Please be advised that unpaid item cases are automated to open after 3 days without payment. Brand / Model: Mackie M-1400i Power Amplifier Condition: Unit plays sound, however output is staticy. Sold

 

This is a Kenwood stereo receiver that was made in 1969-70. It ouptus a listed 33 watts per channel with both channels being driven into 8 ohm speakers Condition: Overall decent looking, all parts are

 

Vintage Bell sound system mono tube amplifier. 6V6(RCA) pp type amplifier. Two mic input & one phono input. There are two plug in input transformers. Very good condition. Working good. All origina