Anyone seen a schematic for a tube amp of couple of watts suitable for driving a variety of headphone impedances or a small speaker as a practice guitar amp?
First thought is that headphones have the wrong spectrum for guitar (and you probably don't want to strap a couple of Celestion Blues on your head), so you'll want to have some sort of speaker emulator in there.
I have been wanting to build a few of these guy's circuits for a while. Maybe you could take one of their "amp sim" circuits, the speaker emulator, and a 2W power amp from somewhere else and make your device.
[quote author="Junction"]Anyone seen a schematic for a tube amp of couple of watts suitable for driving a variety of headphone impedances or a small speaker as a practice guitar amp?
Michael[/quote]
The AX84 group is dedicated to lower watt guitar amp designs.