Just acquired a used FYD Twin preamp from forum member Winterland. Appears to be an early version without second output or reverb dwell. I connected it to my MosValve MV 962 and JBL E120 in Baltic birch 1x12 cab and it sounds GREAT. Very Jerry to me. Reverb sounds very useable despite lack of dwell control. Takes Jerry style pedals (Boss OD2, 3Leaf Proton 2.0, MXR Phase 100, Boss OC3, and TC delay) well and is very punchy. Can't wait to gig with it and run it through the paces further. Only downside is that the depth of the box extends just beyond the back of my custom 11.5" deep Baltic birch rack cabinet. Not sure how that compares to the SMS.
Also, Jeff (Winterland) is a good guy and I wouldn't hesitate to buy from him again).
Also, Jeff (Winterland) is a good guy and I wouldn't hesitate to buy from him again).