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Old 15th Oct 2017, 12:22 pm   #23
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
Default Re: Golden Ear Laboratory Amplifier Build

The oscilloscope origin would explain it. The Decca Decola is another differential design but is AC coupled and no -ve feedback to worry about. It also uses a matching transformer to keep it differential all the way from the pickup.
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