ADAGIO AUDIO PREAMPLIFIER WITH TONE CONTROL

         High performance valve audio mixer  (4 x ECC 83)

          with 2 tone controls - high and low

         based on project found on internet, and just for the reason that I have not $3.850 USD

           to buy a new one, I started to build this project :

          

           PCB was hand made     

            

            

            

             New work

            

                 

            

            

            

             ready for first test

            

 

            project under construction

 

 

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