UK Vintage Radio Repair and Restoration Discussion Forum

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-   -   HP8640B amp 08640-67003 (https://www.vintage-radio.net/forum/showthread.php?t=175737)

LA9CHA Thorvald 26th Jan 2021 11:32 am

HP8640B amp 08640-67003
 
Looking for information regarding the difference between U1 and U2, ( 0864-67003 and 0864-67002). I have seen that the U2 has been made up and replaced by a MAV11 based amp, and wonder U1 can be made similar way?


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