Here for sale is a:   Vintage Old Engineering calculator. It is complete and in a  case, my father used one of these to do calculations to create structural steel construction drawings. It appears t

 

This is a very nice Harman Kardon A50K tube integrated amplifier, the kit version of the A500 amplifier. I've been asked if the kit version is the same as the factory assembled A500--electrically they

 

VERY COOL VINTAGE PORTABLE TAPE PLAYER. ROSS MODEL MARK 400.HAS CARRYING HANDLE, MANY CONTROLS, TAPE.REWINDS FINE BUT THE FORWARD MOVEMENT SPUTTERS AND DOESN'T WORK ALL THE TIME. I HAVE NO IDEA HOW TO

 

Up for auction is an Admiral Bakelite Radio Phonograph, produced during the late 1940's. Model 7RT41-A --- CHASSIS 6L1. Cosmetically, the radio is in great condition. There are no cracks or chips on b

 

Up for an auction is for matched pair of western electric Davenport type P-800 250K attenuators by Tech Laboratories, Inc Both attenuators are stamped BA 73987-8 They are from WE124 amplifier. Tested

 

Description 1 Piece DC power supply capacitors filter PCB, for upgrade your preamplifier or amplifier.The design can be configured as normal capacitive filtering, or CRC, or CLC filtering, depending o

 

Up for bid are A Vintage University N2B Crossover Network and a University tweeter model 4401 as shown both untested

 

This is ONE WONDERFUL, TOTAL MINT and ENOUGH RARE, TELEFUNKEN branded, COUPLE of single TRIODE EC8010 = 8556 NOS/NIB made by SIEMENS-RöHRE (from bulk-carton and boxed), genuine made in GERMANY. Super

 

The auction is for a Russian triode GM-70 with copper plate. Manufactured in 1981. The tube looks in new condition like never used. . Airmail shipping worldwide usually takes 7 to 10 days if not delay

 

What a great pair of speakers! Here's a pair of the famous B&O S60 four way speakers in excellent conditions. All drivers are in mint conditions, cabinets look great too, just few light scratches