The psu is 25-26.5v +/- at 300mA per rail.
I built misterdogs boards. Upgraded opamp in servo, lower dc offset. Transistors matched to better than 1%, riaa matched to 0.1%, 2sk170 on the back end of the current mirrors, j113s on the stunts, matched output stage. Shunt stability mod is added, with extra hf decoupling of the first stage of the shunt.
There component cost for a pair of paradise main boards is over £400. You'll need to buy parts from eight different vendors and if you can match a full set of transistors from fewer than 500 parts you'll be doing well. Total build time for a pair of main boards is close to 50 hours and that's not including the hunting the parts out at various suppliers.
If I was selling misterdogs boards I'd be asking twice as much.
No, no one has moved to suts.