I own a pair of Elipsa SE in red color. I power them with a Mark Levinson 333. It is a 600 watt (RMS) at 4 ohms, the speakers nominal rating.
Bass control is absolute and imaging and resolution is great. I couldn't be happier with them.
Prior to the Elpsa SE I used the same amp with Sonus Faber's Guarneri Memento and overall their sound was very similar to the Elipsa SE exept in the bass, sensitivity and achievable loudness. Unfortunatelly, due to to a defective remote control on an occasion the volume started going up by itself and before I could switch the amp off I blew both Guarneri's woofers...
The ML 333 is an old amp, from 1999 but it holds itself against modern, high end amps. Price, however, is low.
If plan to purchase one remeber to check if their capacitors are not leaking as this will reflect in bass control. If they leaked they should be changed for new ones available in the internet. Exchanging them is not a difficult job.
Good luck !
Andre