Tortech in Sydney have these on sale

[Moondog55]

125 watt Audio Output Toroid ― Tortech Transformers

I may buy a couple myself and put aside for a chip amp or two

[AuroraB]

Unless you actually need 70 or 100 V line distribution, why on earth would you want to use a step up transformer at the output of a SS or chip amp????

[Moondog55]

Well actually I stuffed up reading the full specs and made a bad assumption that it was + - + CT .

By the time I realised my mistake it was too late to edit.

But cheap if that was what you needed?

I was on the website because we needed a 1kW 240V to 120V down-converter so we can use the new "Kitchen-aide" mixing machine here in Australia

[AuroraB]

Actually, I may need something like that , as I'm building a PA intercom and PA distribution system for work... large plant PA...