Absolute classics. When these are going they sound simply amazing but they do need some updating and general maintenance if, like these, they have been untouched for 30 years or so. The capacitors all electrolytics need replacing, especially the Hunts. Switches and valve sockets all need cleaning as do the pre-amp connections. It may be a good idea to replace speaker sockets as they often get broken. All this and more is worth getting done.