Hey-Hey!!!,
I got this beastie to eval its output Iron. If one wants power and maintain Class A operation there is only one way: high idle dissipation. The 813 plate curves in U-L look quite good for the Cit.II's output Iron. Same for the Heath W6 with its comparable Peerless 16431. Either way, more power is an interesting experiment. There must be some limit to the output Iron parasitics making too much trouble as power/size goes up. I am certain the Duece's Freed OP's will be fine. Slightly more idle bias and voltage but not much. 650V and 150 mA should be about right....:)
In the meantime, it is nice to have a second amp so I can play with the primary.
cheers,
Douglas
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