The HP 41CX Calculator has alphanumeric processing capabilities and a unique and intuitive user interface. This HP scientific calculator has 63 registers that can be divided between program and storag

 

Hiya, got a real cool ARP 2600 synth user guide/manual here. Got it in college where I was fortunate enough to play with an ARP, graduated now and want to find this book a home that will better apprec

 

Absolute rarity - really "high end" from year 1955 - quadro cinema tube amplifier 4 x 25 Watt / 200 Ohm / 15 Ohm respectively 2 x 50 Watt / 100 Ohm / 8 Ohm Amplifiers this type were produced by Rohde

 

I have 2 very rare 12" subwoofwr by JBL made for Heathkit. Both subs are in great working condition.Free from any damage ie; rips tears,dents center of cone . The model number on the back of the subs

 

This is a set of reproduced documentation for the classic McIntosh MAC-1900 Stereo Receiver, including: Owner's Manual (20 pages) Service Information (Serial number 4X230 to AL9999 - 19 pages) 2-page

 

Hello there,up for your consideration are 11 12Ax7/ECC83 short & long gray plates,American & Japanese made,there is no original boxes for them but they will be very well packaged for shipping.

 

VINTAGE PIONEER SX 1010 STEREO RECEIVER AS-IS PARTS/REPAIR. Purchased in 1975 this multi voltage receiver has been sitting in it's original box for the last 20 years. Powers up and all the lights, exc

 

The item being offered is a used RCA UX280 (80) tube from the late 1920's to early 1930's.When tested on my Hickok 539C tester this tube measured 73/76.Good/acceptable for this type is 53.No leakage,g

 

2 new old stock HY31Z tubes, one has black 'gunk' on it from the wrapping - - $8 S/H to Continental U.S. PLEASE READ ALL TERMS & CONDITIONS AND DESCRIPTION PRIOR TO PLACING A BID. PLEASE ASK ANY Q

 

You're looking at my listing for a vintage 4-track quadraphonic tape of the music group "Bread" - a classic group of the 1970s!This is a 'gently used' tape that hasn't been listened to in decades. It