a couple months ago I reached out to everyone asking for advice about my two vintage macintosh 75 amps. I took some good advice, got them repaired and quit thinking of them as a PA amp for my son. I am no audiophile. They sound fantastic but they are way over my head. They deserve better. I don't have any idea how to get them appraised (several people remarked on their high value and I just invested $300 in repairs) or go about finding a serious buyer. I believe they are too fragile and heavy to ship. (about 45 lbs each) but I've never done it. any thoughts? thanks