Thanks Steve. For simplicity and 'proof of concept' just planning on using an AV amp for its multi-channel audio amps and one volume control for all channels. But certainly the idea of using PP for the bass and SET for the highs is very attractive. The amps in an AV unit I suspect are not really high end. Probably cheap class D boards.
Thanks Ken.
On the vinyl side of things have you considered using a pro ADC? Something like that RME does. Their ADI-2 Pro will sample at 192/24 with, I understand, great results. But I'm sure most people with great vinyl rigs will want to stay in the analog domain from the black circle all the way to the speakers. Purism rules ok! :)
Between other things I've been mucking around with
JRiver Parametric EQ and trying to get my head around stuff like Linkwitz Transforms and the like. All very interesting.
Still waiting for an AV amp to come up. I may, assuming I get to grips with the parametric eq soon, just go for a 2 way stereo idea using a different (sacrificial) speaker and the existing AV amp I have.
Thanks for the tip on Halfwaytree (Gordon) - I may well drop him a message.
What power amps you getting?