Magneplanar 3.7 - recommended preamp and amp

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.

I will second the Cary 500 MB recommendation; best and most powerful amps that I have found for my 3.6's. Going to keep them for my newly ordered 20.7's too! They are the closest thing to great tube amps that I have found, they double-down to 1,000 watts into the Maggies, never ever run out of power, put out loads of current, and drive my Maggies to the low 90 dbs in my 17.5 x 26 x 9 room without any stress or strain. Very highly recommended.

Watch for a good used pair of the 500's and then get a decent tube preamp; you will be set for a long time to come!

Bryston is a good bet