On rejoining the Maggie fold (I bought a pair of .7s in 2019 after selling my MG1s more than 20 years prior) I first used my old B&K ST-140, which was quickly replaced by an Emotiva BasX A-300, which was an incredible amp for the money, and a big improvement over the B&K. I kept it for about a year before trading it and an old preamp toward a pair of PS Audio M700 monoblocks. They are by far the best amps I've heard with the very few .7s I've experienced (those would be my own pair, and the local dealer's demo pair that was being driven by a Cambridge integrated).