Horning owners what amps have you used?

I have the Sati.
It's now back in Denmark for service so I'm running a couple of classic ss amps like the spectral 150 and ML 23.5.
They all work fine though I'm still struggling with some room acoustics that drive the bass all over the place. There's another thread discussing it.
Think though I've made some progress with it now.
Also, though I get great life, dynamics, height and width of the scene, I don't get that much layering and depth. Not sure why.
Regards.

I have been reading the above posts and F.Y.I. Tommy Horning said he never designed his speakers to be powered by push pull amps!

I believe the impedance does vary by specific model, also, I'm pretty sure the impedance of my Eufrodites are rated at 6ohm nominal (and is at least reasonably flat). It also produces pretty impressive SPL when placed close to the front wall and powered by a 3 watt 2a3 SET (Wright 3.5 mono). So, while most 'back horns' are clearly not in the same efficiency/sensitivity ballpark as the most efficient front horns, these speakers can work well with 2a3, and even 45 SET amps- at least, in less-than-huge rooms, or for less than floor shaking volume levels. Room placement and reflecting some of the midrange and bass off of the front wall seems to be the key to both proper tonal balance, and maximum efficiency. At least that's my experience here. Hope this helps.

If the impedance curve is relatively flat that certainly is an asset. Generally speaking S ET amplifiers like to see a higher speaker ohm impedance. Driven very successfully with 3 watt amplifiers does attest to its easy to drive capabilities.