Cheers for the replies – it's a relief as it's a lovely little Mac. I often prefer it to my LC475 as the monochrome CRT is so crisp. And System 6 serves me fine for the light word processing I do. Chuck a Floppy Emu in there and sharing files with my modern setup is easy.

No screen jitters when accessing the floppy and no speaker trouble so far, but I'm keeping an eye on the analogue board ... it's bound to have problems eventually. At some point I'll see about sending it your way for a recap, when I've figured out how to remove it from the cramped interior of the case!