Fleetwood Mac and Orange amplification?

[Cussion]

I've seen old pictures of Fleetwood Mac with walls of big Orange amplifiers,
and I've also read that the Shrine '69 live recording were done with Orange amps.
I'm a guitarist myself and I love the guitarsounds on that album. Later on it seems like they moved to Fender amplifiers..
and I don't think the recordings made with the Fenders sounds as good.

What happened to Fleetwood Mac's wonderful sounding Orange amplifiers?
Maybe Jeremy knows