On Friday, 2 September 2016 17:51:09 UTC+1, Bert Coules wrote:
Given this setup: tuners -- amp - speaker distribution hub --
separate rooms
then using individual remotes to switch between tuners (and therefore radio
channels) would work, but I wouldn't have individual-room control over the
volume: the output would be audible in every location simultaneously.
That's not really ideal.

You can use speaker volume controls. It's better and easier if you used 100V speakers - multi channels of 100V speaker level audio were carried on a multicore cable to passive bedhead units with a vol control (multi tap attenuator) and channel selector in hotels and hospitals - but you could do it with low impedance (8 ohm) audio. The drawback with low imp is that adjusting one speaker can affect the others.

If you want to distribute at line level and have local amps then you could also distribute say a 24 volt power feed along with the signal wires.

100V attenuators
http://www.canford.co.uk/Products/58...tainless-steel
https://www.cybermarket.co.uk/shop/p...e-1022992.html

low imedance vol control
https://www.amazon.co.uk/B-TECH-BT93.../dp/B000Q4V3OM

Owain