Having done some fairly serious auditioning of the MAC MA600, I have concluded that it is a 'mid-fi' product at best. Treat yourself to something from Audio Research, Jeff Rowland, Conrad Johnson, Jadis etc. MACs are built like tanks, but what you want to match with the f-30s are true audiophile components. In all fairness, though, the high-end MAC tube gear is a big step forward from your integrated amp.
What to upgrade first for better sound quality?
What is going to give me the most improvement in sound quality. I am an analog guy only. Current equipment is a MAC MA6600, VPI Prime w/ortofon 2m Black MM cartridge and revel f-30 speakers. While I have been on the fence with adding a separate phono stage as mine only has a MM one I wonder if I am better off upgrading speakers, cartridge and/or phono pre. Thanks for your opinions.