Many old IRIX workstations still make a pretty decent audio workstation today.
The SGI Octane for example, has a mere 3ms audio input-to-output latency out of the box, and they come with Alesis ADAT 8-channel, 24-bit optical ports are built-in, along with S/PDIF or AES/EBU optical and coaxial ports.
On top of that, there is quite a big list of audio software for the platform out there, many of it still relevant and very usable today. By default Irix comes with a pretty decent mutitrack recording program. Hunting down all the Irix audio software is a bit tricky. Whomever said nothing ever gets deleted from the internet obviously never has researched old obscure stuff
There's a list on sgi's old ftp that's rotting away. It is ridden with broken links and it's own pages don't even link to one another correctly anymore, and I have a feeling one of these days it's going to just vanish completely as SGI/rackable is dropping it's legacy IRIX support this year.
So I started copying the list and reformatting it on the reddit /r/IRIX subreddit wiki:http://www.reddit.co.../wiki/audio_software
There's some pretty fascinating software in that list.