I recommend these sites for quality products, musicians and artists who deserve a look or listen.
https://www.instagram.com/sweetamplification/ Lots of Sweet repair and new build pics!
https://taweber.powweb.com/weber/ -Speakers/Amp Parts
http://www.mojotone.com/ -Amp/Guitar Parts
https://www.youtube.com/a5db5928-f1bc-4cce-b45b-2572a27d889f -video featuring Nick Moss with his Sweet PreBS T35 at Fitzgeralds, Berwyn IL, June 2017
http://www.youtube.com/watch?v=m7HNI9HJ3Go&feature=plcp -video featuring Jeff Calvin playing a Sweet PreBS 45T that I built for him.
http://autumndefense.tumblr.com/ -Great band featuring Pat Sansone and John Stirrat of Wilco. Pat uses a custom built PreBS 20+ live and in the studio.