I’m a fan of my McIntosh MX110z as a preamp (I only use the line level of the pre as I have a separate phono and MR67) - it was designed for the 240 so synergy is good. Devore Fidelity speakers pair well also pretty much any Klipsch heritage series. You could get some vintage heresy’s and upgrade the crossovers and the tweeters (Crites are drop-ins) and you would have a fabulous sounding system.
Speakers for Mc240
I have not posted for many a long year but have started to get dragged back into this ruinous hobby. I am based in the United Kingdom and have just come into possession of a Mc240 and a MR67 tuner. They are both boxed and have been only owned by 2 people since new, I know one of them, they even have the instructions and the service guarantees unfilled. I have decided to build a system around them. My vinyl front end is sorted so looking for suggestions on preamps and loudspeakers. 90% of my listening is jazz with the rest opera and 70's rock, soul etc. Any suggestions pleased.