Heater supply mod kit available for PCB version 1.4d

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6 years 1 month ago #5 by admin
The heater supply mod kit that fixes the power-on spike issue for PCB version 1.4d (order made before 1st October 2018) is available. Users of PCB version 1.4d should have received the availability announcement by email.

Note the spike issue only affect users that test vacuum tubes with a very low wattage rating on the filament.

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