Tube amp advice

Manley Snapper can probably do it; and fully balanced.

Hi Dan,
That post by Raquel is absolutely correct regarding the importance of high quaility transformers and power supplies, they matter greatly. His suggestion of the VAC 70/70 amplifier is spot on, this was one great all time tube amp. It used 300b tubes in a push pull circoit and simply sounds wonderderful. keep in mind this is a directly heated triode tube(DHT) and not a pentode tube like the two amps you mentioned. The main downside to the VAC amp is the tube replacement cost for multiple good quaility 300bs(they do have a long life span however) but man oh man the sound! I do believe that the EAR 890 amp would drive your speakers very well, it does have very good transformers and power supply, just a different sound using the KT88 pentode rather than DHT tubes.

There is a Music Reference RM-200 on Audiogon right now which is known to drive difficult loads well. It's no CAT, and it's not 200 lbs, but 90 seems like a good start. I haven't heard the RM-200 myslf, but I do own its smaller cousin, the RM-10.

This is very helpful. Thanks everyone. Part of the reason I like the Kharmas is their small size. Not sure I'm ready to go back to something massive. I really do appreciate the suggestions and will check them out.

I use the Rogue M-180 mono blocks to drive Martin Logan Summits that have a minimum impedence of 1 ohm at 20khz and they sound very good to me. I think they also pass the weight test at 55 pound per amp. Made in USA to boot.