OpAmp Labs 4009 Thick-film Hybrid opamp 8 pin round gold can - 2 pieces per lot

Description

The Op-Amp Labs 4009 is a terrific piece of early 1970s technology. Bel Los Mandy was one of the early fathers of integrated circuit technologies. While there were some usable IC chips back then few sounded as good as his 4009 op amp.  He coupled these fine little 8 Gold plated pin hybrids with additional output buffer transistors, input transformers, etc. into industry consoles for which he received an Academy award in 1971 for advancing the sound industry from tubes to solid state.
""ACADEMY AWARD" TO
OPAMP LABS'
B. J. LOSMANDY
At "Oscar" ceremonies on April 15,
1971 the Society of Motion Picture
Arts and Sciences honored OPAMP
LABS President Bela Losmandy with
its Class Ill technical award.
Mr. Losmandy's award recognized his
contribution of concepts and designs
for improved motion picture recording
equipment, through the application of
micro- miniature solid state amplifier
modules.
Macdonald Cares' B. J. Losrnandy""
They used a bipolar 24 V supply unlike most of the other consoles. Most of the others utilized a bipolar 15 V or single polarity 24 V. So his consoles could swing 48 V on its rails which probably few people know.
These devices were fabricated at CTS Microelectronics where I worked at the time and may or may not work to max ratings.  I have tested these to function only in a simple flasher circuit at about 15VDC on both the + and - rails or about 30VDC.  If you need them tested to a higher rail to rail voltage, I might be able to do that also for function only in the flasher circuit.   I am only listing a few that I have but I could test and discount a higher quantity if you have a need for them.  If you want to provide testing in your own console, we can work out some details and pricing.
I also have some that are rejects if you are just wanting some for display or collecting.  These rejects are substantially discounted but the markings are good.
I have copied their data sheet and will make it available as a pdf.  I also have the CTS hybrid drawing showing the internal layout/pinout and transistor numbers.
Because these are electrical devices and can be damaged by the equipment they are installed in, I am not accepting any returns or refunding any payments.  I test them on my end for function but sold "as is" with no returns or guarantees.  But as my feedback indicates I am a reasonable person should some problem arise and would hope to work out a solution.