Re: Marconiphone 538
6K7Gs seem to be made with a perforated metal screen around the anode- I wonder if that gives more dependable screening than that employed in the M-OV series valves, which is possibly just the graphite inner glass coating, though it's difficult to see through it to see if the anode cylinder is exposed or screened like the 6K7G. Maybe a sacrifice is called for....
|