Monobloc power amp would be my only guess...…..either that or a widgy gidget….
Thanks I was trying to see and have you show to others what the Tabs/ spade connectors said. I see in this photo top left it has some writing as what the connector is?
The full shot of the ceramic sockets is helpful.
Wow - how cool is that!I was able to finally locate my notes:
McIntosh Model 640. Tubes: 2 x RK-4D32, 2 x 6SN7 and 1 x 12BH7.
The notes below were on another forum just a few months ago:
MCINTOSH 640 tube type RK-4D32. I had to do some digging and ultimately had to go to Sidney Corderman, VP Eng., to get some info. Those amps were made way back in 1950 for the Eckert Matchley Compan They were servo amps used in computer. I don't remember the output impedances but the amps weren't intended for audio.. The power supply was not provided by McIntosh. The amps probably were used in the ENIAC or UNIVAC computers Frank Gow - Sr. Sales Consultant
Off to a collector, no doubt.I passed on it. It sold for 48 bucks but if it's not suited for audio it would just collect dust here.
Pretty cool piece of history though, I guess.
Of course "Macintosh" was a ref to the apple type, "McIntosh" to it's namesake co-founder.Hello Jeff
"Those amps were made way back in 1950 for the Eckert Matchley Company " MCINTOSH made amplifiers used for computers in 1950 ? Over 25 years before APLE who choose (and paid the right to use) the name of "MAC INTOSH" ?
Life is strange sometime !
Hello Jeff
"Those amps were made way back in 1950 for the Eckert Matchley Company " MCINTOSH made amplifiers used for computers in 1950 ? Over 25 years before APLE who choose (and paid the right to use) the name of "MAC INTOSH" ?
Life is strange sometime !