Tube amp for a somewhat difficult load

You may want to look at the Kora Cosmos monoblocks. These are 100 watts of pure class A power. They are rated to and will drive a load from 2-12 ohms all day long. They have a signal to noise ratio of over 100db and a wide bandwidth. They utilize 8 6AS7, 4 EL84 AND 2 6922'S PER MONOBLOCK!
They are also a great bargain at the moment.

Try a Music Reference RM-9, or RM-200.
Roger's amps are taped out to 2, 4 & 8 Ohms, and have plenty of current.
Happy Listening

I am using a modified Music Reference RM9 to drive maggies in a rather large room. I would describe this as being one of the more difficult scenarios for a tube amplifier, but the RM9 is easily up to the challenge. And the best part is it's a steal on the used market.

Oz

There is a product called the Zero Autoformer that I recommend you investigate along with your amplifier search. You can find information regarding these at the following link. http://www.condor-connection.org/asog/tweaks/ps/index.html

My speakers are rated as a nominal 8 ohm impedance and benefited dramatically by using the 2X setting of the autoformer.

I do not use any speaker cable, just the Zero's, with my monoblock amplifiers. They are a truly tremendous product.

i have a little tube research 80 watts triode . it has a larger power supply than audio research 600s . it will drive the hales like no tomorrow. where are you ? i will show you.