Electrostatics and tubes

@bdp24 Nice summary. I've owned planars since 1973 (Magnplanar Tympani 1a's). I've also owned SMG's, MGII, and MGIII. Also Martin Logan Prodigies, Quad ESL57, Quad 2805 and 2905. Current system is Quad 2805, 2905, Magneplanar DWM (x2), and DIY sub.

I currently drive everything with solid state, Quads with DIY pure Class A, DWM with Bryston. One thing that hasn't been mentioned yet is hot-rodding. Magnepan speakers can be immensely improved with better capacitors (film and foil) and with bracing (Mye stands or equivalent). Quads can be significantly improved with better power supplies (Electro-Static Solutions) and better step-up transformers (Plitron). Don't know about Eminent Tech - I would ask them - but remember that all hybrid systems have an integration issue, that is, integrating a cone with a panel. Some are more successful than others.

Good luck - it's a great journey!

Electrastic like Martin Logan’s with the right power tube it will work. Many years ago I heard Martin Logan statement hook with VTL wotan monos. The sound is amazing.

In the end of the day you can always add an outboard transformer (Autoformer) to help with impedance matching issues when using either of these. This can help with the really low impedance of Magi's and some ESL's. This should be fine with your amps especially if you have sub('s). maybe something to consider if you want to try without upgrading amps power etc. 

Speaking as a past Magnepan owner, what I'm hearing is that you own a Ferrari and you want to put a diesel engine in it, or is it vice versa?  Had the 3.5r's that were some of the most exact sounding speakers I have ever had.  I played with a ATI 1002 and a Audio Research VS55 and they didn't want to sing at all.  With a McIntosh MC-7270 or a Rotel 2-channel biggest they ever made (don't remember the model number), they were beautiful.  Maggies are slightly more efficient than a slab of marble. 

We have owned the same pair Quad ESL-57s, bought new in 1979. Before that, another set that we sold because they were copper, we wanted black. If you really want some fun, ask if the copper or the black Quads sound better. We have run them successfully with a Quad 405 current-dumping solid-state (100W x 2), and now with an Audio Note Cobra tube integrated (28W x 2). The Quads sound much better with the tube amp and there is plenty of power. We recently replaced the Jolida JD100 tube output CD player with the tube output Audio Note CD 3.1x/II player. Again, a remarkable improvement. I think electrostats, at least ours, are MUCH happier with tube power. You can purchase used and refurbished Quads from reliable people. The sound is something to experience - so transparent, it is spooky.