Ah. LBA said that it will work with any 9v power supply, as long as it can output at least 350mA of current. My Godlyke puts out at least 1000 I think.
Minimum 350mA. So running about 2mA at the plate for total dissipation (both sides) of 1W. Heaters would draw another Watt. Not shabby.
I once saw a small guitar combo amp (unbranded) that was running a pair of 12A?7s at the output section for total power of about 5W. Sounded terrible because of the terrible little speaker in it. With a decent speaker it probably could have sounded pretty good.


