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More details

The tube socket for the GM70 is 30 mm thick and mounted directly onto a circuit board with a thickness of 3.2 mm, the maximum standard thickness that is manufactured.


The board also includes the passive regulation and filtering of filament current supply for the power tubes.

Same circuit board from above. It is mounted to the 3 mm thick top plate of anodized aluminum with 7 screws.

The construction is very stable with no noticeable flex.

Note the tube socket cover to isolate the anode sleeve which is recessed.

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