Hey Alex, nice to have you onboard matey! Does ClassicTone currently have a clone of the original dual (50W?) OT's used in the first JTM45/100 amps? One of these days I'd like to build a JTM45/100 with your transformers as I understand CT typically uses paper formers as opposed to the commonly used plastic formers and that the vintage method makes for a more vintage tone. After having owned an old tweed Vibrolux, I'd have to say that there is a 'marked' difference in tone from vintage transformers comparative to the newer designs.