I had very good luck driving a pair of Magnepan MGIIIAs with two different versions of the B&K ST140 over the years.
The "original" ST140 was, as it's number implied, a 70 WPC amp with an iron core transformer. Not a lot of these were produced. Also used until recently, a later ST140, in which production swapped the transformer for a Toroid, increasing it's horsepower to 105 WPC.
I was able to achieve very satisfying listening levels in both large and small rooms with this setup. I do think that the combination of a lower impedence and sensitivity make amp choices of less than 200 WPC limited, but there are amps out there.
Make no mistake, The entire Magnepan line loves lots of good, CLEAN power. I never realized what the MGIIIA was capable of until I started feeding them a high power/ current amp. (Sunfire Signature).
Just my 2 cents...
The "original" ST140 was, as it's number implied, a 70 WPC amp with an iron core transformer. Not a lot of these were produced. Also used until recently, a later ST140, in which production swapped the transformer for a Toroid, increasing it's horsepower to 105 WPC.
I was able to achieve very satisfying listening levels in both large and small rooms with this setup. I do think that the combination of a lower impedence and sensitivity make amp choices of less than 200 WPC limited, but there are amps out there.
Make no mistake, The entire Magnepan line loves lots of good, CLEAN power. I never realized what the MGIIIA was capable of until I started feeding them a high power/ current amp. (Sunfire Signature).
Just my 2 cents...