back when i had my TB100 (the previous version) head i boosted my signal with a Maxon OD808, Used a grant fidelity last on the chain on the effects loop and a Electro Harmonix Black finger tube compressor to add more tube "saturation" and compressing to my sound, worked well, until having tubes outside of my amp started being a trouble at gigs since they would break before or after some of them because all of the gigging hassle
but it really worked great.