This video of a performance of Turangalila shows why a simple little tranny and a bit of auditory imagination is all you need:

https://www.youtube.com/watch?v=8PjyCpRKDrk

It's a big complicated orchestra, but most of the time there are only a few things happening. The videographer does a very good job of zooming in on the constantly changing small groups of players who are the focus of attention at any moment.

What my little tranny couldn't do (and my computer speakers can't do it either) is convey the sheer chest-slamming impact of all those brass instruments hammering out that Statue Theme (think Easter Island megaliths) near the start. But if you've ever heard massed brass you can imagine it.