This is my project. I had an old hp hub rack:
and I decided to turn it into a multiroom 5 channels amplifier
This is the empty hub:
I used a led 24v power supply
I created a board with fuses
a lot of modifications to the hub case
and v4 boards
and this is my 5 channels amplifier
tested and works perfectly
A very nice project well photographed and it even works too 
Great work, I am sure forum users could be inspired by such projects.
Kind Regards, Kevin
Wauw lots of good hard work that paid off! You probably need those fans when running on good levels. 
Wow, amazing! Very affordable a multiroom 5 channels amplifier!
