Look for a used Quad 909 ($1695) for around $700 to drive the Maggies. 140 w/ch and a bit of boost in the bass as they were made for planers. Pair with $500 used PS audio GCPH phono preamp with volume control($1000). You're good to go. Add a tube preamp when he adds another source component. Alternately, Belles 150 amp. If this is too much $, go with a used B&K 140 amp, about $250, but stick with the GCPH.
Help me put a system together for my son
One day out of no where my (future) daughter in law say's my son is collecting albums. I had no idea he had any interest in audio, let alone vinyl (must have been paying attention to my hobby after all!) . They are in the process of buying a condo where his system will be used. He mentioned that bass was not important to him and that he was more interested in good midrange system. So far I picked up a (new) Rega RP1 TT that came complete with tone-arm & Ortofon cartridge. I am in the process of acquiring a used pair of Magnapan MMG. Keeping a low budget cost in mind, what amp/ pre amp or integrated would you think would work with what I have so far. And, he will need a phono pre as well. He has no interest in any other source at this time, just a vinyl set up.