Hello all,

for a show in an aquarium where we can't use a standard PA.

We are considering building our own multiple headphones amps - with
the punters bringing their own cans.

Here's my question: we need about 100 outputs together each with
individual volume control which can be distributed in this
amphitheatre. Probably every 5-7 m distance between each box, where
people can plug in.

How would you address this challenge?

I am up for sitting down and building/soldering the kits. Does anybody
know of an all-in-one chip/headphone amp?

any suggestions appreciated...
regards Lars