Thanks for reply, busb.
I was lucky enough to pick up A30.5 power amp to go with the preamp.
Quite a step up for me. The power amp was only about 15 months old and he sold it to me for £700!
Preamp was £600-ish. Boy, does this stuff depreciate quickly when the wealthy hanker for a change.
Still might like to fit in a modern eq system somewhere if possible, though.