Using tube amp with electrostatic speakers.

HELP?

In your opinions, would a pair of Balanced Audio Technology (BAT) Rex II mono blocks be powerful enough to make the Martin Logan Neoliths sing?

I'm currently using a pair of Krell 575 mono blocks, which is powerful enough, but I'd like a warmer sound with more harmonics. I mostly listen to old standard jazz LPs from 50's to 70's (at night club sound level) and smooth jazz CDs (at concert levels).

BAT: 

Neolith: 

Dear  @milt808  : " a warmer sound with more harmonics. "

First the harmonics are developed by the recording source we are listening it and those harmonics have changes through all the signal path where that signal must travels in our room/system till goes in our ears/brain/body. A good room treatment and fine tunning the subwoofers SPLs can help for that warmer sound  you are looking for that again depends on the signal source. The issue is not about tube amplifier because your speakers impedance at a critical 20khz frequency is down to 0.43 ohms and I don't know yet a tube amp that can handled with applomb that speaker impedance.

In my opinion this is the amp for your system and I think you can't go wrong with:

https://parasound.com/jc1+.php

Regards and enjoy the MUSIC NOT DISTORTIONS,

R.

Unless Martin Logan  says otherwise, I would assume that they have not abandoned their stated policy of designing their speakers to accommodate solid-state amplification best of all. That really means the speakers are likely to have a low nominal impedance. You might check this out with Martin Logan. If I am correct, then you may be best off with a solid-state amplifier, but there certainly is no harm in trying those BAT amplifiers, if you have them on hand. If Raul is correct about the impedance at 20 kHz, that squeaky low impedance could be vexatious for any amplifier, solid-state or tube type. However, the saving grace is that very little amplifier power is needed at such very high frequencies.

I see now in the advert that the nominal impedance is 4 ohms, going down to 0.43 ohms at 20kHz, per Raul's statement too.  That's not a great situation for any sort of tube amplifier, but it could be made to work I guess.  Using Autoformers from Anti-Cables would help.