Magneplanar 3.7 - recommended preamp and amp

I highly recommend the Gilmore Audio Raptor 500d monoblocks for your Maggies. They now are selling for $2500 the pair. I use them on my 3.6's and they are great with the Maggies. I have never used a ss preamp so I can't recommend one
Alan

I have owned many pairs of Maggies over the years and have found that a good SS amp like a Plinius SA100 MkII and a tube preamp like a BAT Vk3iX have been the best match.

I replaced my Cary 500MB's with Cary 500.1MB's. Like many others (search the forums), I find the Cary/Maggie combo to be terrific. I have also found the Cary's low input impedance and high input sensitivity make them ideal for using a passive pre, and have found the Promitheus TVC's a great choice. You don't indicate if you can get by with a line level pre or have a vinyl rig. You should be able to hit the low end of your range with a Promethius Ref 4 and the Cary 500MB's. I used that exact combo in a room about the same size as yours, and was never hurting for volume. I don't have a specific recommendation on a full feature pre, but the BAT/VAC/AR's mentioned above seem reasonable. I'm skeptical as to the prospects of finding an integrated that will bring out the best the 3.7's have to offer. Full disclosure--- I still have my old Cary 500's sitting in my living room. If in the end, you decide to give those a try, let me know and I will list them. Otherwise, they are going to sit until I put out all the other fires I have going.