Wrong speakers

The Einstein amps are OTL, so go with 8 ohm speakers as a 4 ohm load will decrease the power of the amps to about 40wpc & if the load goes a tad lower - the amps will have a fit!
Find something 8 ohm & 90db & the amps will raise the hair on your neck.

I think you would like the Wilson Benesch Vector speakers. Not well known in the US but world wide presence. Our shop has easily driven them with 40 watts tube amplifiers. The midrange is exquisite, wired directly to your Einstein amplifiers ( no crossover ) and they cover almost the entire midrange from 400 Hz to 5000 kHz. A good review on their website wilson-benesch.com. If you can't down load it I can email it to you.

I forgot to add that they are manufactured from carbon fiber, not the drivers but the cabinets themselves.

Best
Jim
Sounds Real Audio

"I think you would like the Wilson Benesch Vector speakers. Not well known in the US but world wide presence. Our shop has easily driven them with 40 watts tube amplifiers. The midrange is exquisite, wired directly to your Einstein amplifiers ( no crossover ) and they cover almost the entire midrange from 400 Hz to 5000 kHz. A good review on their website wilson-benesch.com. If you can't down load it I can email it to you."

More sales shacking.........

Shakey

A point of information that some of the respondents don't appear to be aware of: Based on one of the OP's previous threads it appears that his amp is Einstein's "Light In The Dark" model, which is not a tube OTL and in fact uses a solid state output stage. It is rated at 85W into 8 ohms and 115W into 4 ohms, FWIW.

My comments on a speaker candidate were provided in that thread.

Regards,
-- Al

I would look at Merlin and Coincident speakers;these are known to be tube amp friendly and are very well respected;they have excellent customer support as well.