Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: kagliostro on February 23, 2013, 03:01:41 am

Title: A simple signal injector
Post by: kagliostro on February 23, 2013, 03:01:41 am

http://www.leradiodisophie.it/Iniettore.html (http://www.leradiodisophie.it/Iniettore.html)

Used in the '60 - '70 years to test audio amp

K