Topping TP60 Class-T Amplifier

Sorry, eh, a few benefits from it that you could mostly google. One of the grips you might hear is hum from the dual toroidal transformer, which is typical from dc presence in your AC line from other devices. An isolation transformer would eliminate that. Not sure I would recommend getting an isolation transformer, unless you have some extra cash to burn. I personally noticed a big difference, but my power was/is dirty.

Could you explain about the isolation transformer please?

So it's a class D amp run off a linear power supply? I'd love to hear the marketing bs fabricated to justify something so dumb. Except I really wouldn't.