I’ve only used my BHK 250. In the first video I posted above, Jay tried some tube amps with the Alec with great success. I’ve read some other reviews where the reviewer felt lower powdered tube amps didn’t cut it with the Alec, and advised using high-powered amps with lots of current.
I’d be curious as well if others have experimented with medium power tube amps driving the Alec.
At most of the audio shows Alta Audio uses Krell amps to drive the Alec. I would think a medium powered tube amp would be fine driving a 93 DB efficient speaker.