Magneplanar 3.7 - recommended preamp and amp


I've owned the 3.6 speakers years ago and really enjoyed them. I want to buy the 3.7s and also need electronics. I have a budget constraint of 4-5k for a solid state preamp and amp. I'm okay buying 2nd hand. For those who own Magneplanars can you recommend gear within my price range? My room size is 16 x 21 and I don't listen loudly. I thought even an integrated amp might work (like the Moon i7). I'd appreciate hearing some ideas.

Thanks!
newton
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.
If you'd like to discuss in more detail, contact me directly through my ads for the Revel Salon2s and the Esoteric X0-5.
The recommendations by Elizabeth are great and add to that the 7Bst and 14Bst from Bryston. Pass labs is also very good. Just be sure to get at least 350-400wpc into 4 ohms. Great speakers. Jallen
Thanks for everyone's response. I am open to using a tube preamp coupled to a solid state amp (I've done that before). I'll look in them.
Jallen- for Pass amps do you think there are some that would provide enough drive and yet be within my price range?

I am also thinking about a Odyysey amp as it seems to be a good value for the money.

I will also check into the Bryston amps--appreciate everyone's comments about the various models.
Do not know what your budget is...but if you are considering the Stratos you might consider the Emotiva XPA 1 mono blocks...
I am not saying they are better...but the work well with Mag 1.7's across the entire sound spectrum---especially on organ music...I do not know if they are comparable to Bryston or the John Curl designs Halos and j 1 mono blocks....But on well recorded music like Blue Note and the Mercury Presence series they are brilliant. They are also very cheap under $2000 Also Macormack gets good reviews.