This is incredible information indeed. I've been trying to figure out myself which route to go and the genX (with the software ) - SPA5 - LC3 - 8 inch Phanotrom tube from Bill seems like a good option. Has anyone ever measured the output of a GenX ? is it consistent - putting out what it's supposed to be? I'm scared it's doing something other than what it says.
Is there any downside from a technical point in using a good sound card + Fredx as the generator instead of the Genx+software? Just curious.