K kambo Well-known member Joined Apr 24, 2009 Messages 1,975 Location CA Jan 26, 2010 #1 is there any schematic, principle, basic ideas around for matching tubes... any help would be appreciated... i am planning to build "rotheu" version of 660... thank you
is there any schematic, principle, basic ideas around for matching tubes... any help would be appreciated... i am planning to build "rotheu" version of 660... thank you
