Amplifier in class A uses in the final stage 8 pentodes EL84 for each channel, the stage driver uses two doubles triodes ECC82 second a derivation outline Williamson, the output transformer is wrapped in air, piece of furniture in walnut polished to spirit, parts mechanical in gilded brass, connectors exited and mechanical particular in brass gilded realized to the lathe, assembly on c. s. double face. They follow outline and 2 photographies...

it uses wrapped in air output transformers ...

 electric scheme of Profane power amplifier

Profane : vacuum tubes power amplifier and it's output air cored transformer




by Alessandro Coppi