Yes, the E-I Hahn TXs spec'd in the BOM didn't make any sense from an economical stand-point, requiring $ourcing from across the pond in the EU. I instead used quality over-sized 7VAC toroids from Amveco, easily sourced from Digikey. The BOM specs 4.5VA TXs. This amp would never have been built under the SWA moniker. I threw it in a repurposed scrap chassis that once housed an EHHA, and was happy that I had expected basic DVM measurements and music. I dickered about with a few duiferent pots and SAs. I once entertained building a few one-offs with P-A's permission, but got scared when I started my build.