Toroidy makes good stuff.Mains is ±235V with 2× 25 VAC 150 VA power transformers with ±27.5 of secondary output what gives me ±36.5V out of V Power-686.
I had 2×24 VAC Hammond before, which I had on a shelf from other project, but it was so bloody noisy and I replaced it with Toroidy ones.
I'm still puzzled that you had issues with speaker pops on the MOD286. I've built several and they've all powered up and down quietly. Are you using an unbalanced source and pseudo-differential connection by any chance?