Loved my 1448. First stereo tube amp I redid and modded while at a Twangfest way back when. Still on loan to friend/member until he decides he no longer wants it.....6AQ5 is a very nice little tube.
Excellent customer service and the fact that I can get cans made to the exact height and diameter as the ones I'm replacing is another reason I like Hayseed
That may be a good place to ask for finding origin. I don't think it's silk-screening iirc. I think it's waterslide decals but could be wrong. They are no longer here to look at...
They are and have been been set up for a quad of kt88/6550/6l6....
One has been modded to use one 5687 an the two 5751's and wired in Pentode. These amps are homebrew/commissioned stuff. Not factory.