The 740c will be worlds better than the yammy. Its a little on the bright side though. If your system is on the bright side it might not be agood match. Its neutral sounding and needs about 100hrs of break in to really sing. At first you may think its nothing special, but give it time and listen to it with well recorded source material. If you prefer a bass heavy sound you will be disappointed with it. You will appreciate the detail with your magnepans.

I just sent my 740c back to the dealer in exchange for the 840c. I should get it in about 10-14 days.