6DJ8 heater current = 365 ma may not be best for/in all 6922 circuits*
7308 hc--------- = 335 ma " " " " " *
6922 hc--------- = 300 ma the "cool" one
* Check with manufacturer
7308 hc--------- = 335 ma " " " " " *
6922 hc--------- = 300 ma the "cool" one
* Check with manufacturer