For spare parts
These are new old stock, but orphaned from their boxes
6C4
Triode
Originally used as an amp and power output at RF frequencies, in many ways it could be considered similar to half of a 12AU7
Lots of people in the audio franternity like to play around with these little beasts.
6.3V heater
Typically 250V on the anode, 10mA anode current
7 pin base
Condition exactly as described
Non-returnable used product
