https://www.audiogon.com/listings?q=Mcintosh

My response would be no different even if it were someone with better hearing.
When choosing high-end audio gear, always rely on your own hearing and test different setups with music you know well, since what sounds good is personal. Also, getting tips from audiophile user groups forums, checking the warranty and customer service, and knowing how your room affects sound are key to making a good choice.