Good impedance match for Atma-Sphere MP3?

Essentialaudio (Brian?), I really appreciate your insight -- the fact that you're a dealer only adds credibility to your advice -- presumably you've heard the various amp-speaker combinations and know what works. I'd initially confused (cost-wise) the MA1s and MA2s -- was pleasantly surprised at the cost:value equation of the MA1 MKIIIa. Thank you for recommending them. Until a year ago I'd had no experience with Atma-Sphere -- In addition to his works of genius, I find Ralph's accessibility and warranty policies just amazing. What a great company.

Yes, Emaillists, I'd thought of the Atma-Sphere S-30 but was worried that it doesn't have sufficient oomph to handle the Sophia 1s. I suppose the best bet is to arrange an in-home demo (I find listening to equipment at audio stores too confusing). I love my MP3 and would love to find an OTL that would work well with the Wilsons. Thanks for your thoughts.