Another thought (I still have my eye on the EML Mesh): my house current is usually around 124v. Even with the voltage lowering mod, could this higher current spell danger for the rectifier?
So have you bought a rectifier yet?
I use this one with my LS-100 and MTP, https://www.upscaleaudio.com/products/philips-5r4gys-made-in-holland
It is really amazing what a difference it makes, just stunning.
Unfortunately, Upscale has steadily increased the price in the last 3 years. When I bought mine it was only $80.
My voltage runs high, like 125-127, and I've never had an issue, with lots of hours on the LS-100.
BTW, I use the Black Treasures with both my ModWright tubes stages. I would get another set.