The Companion is a very high efficiency speaker and you might want to forgo the powerful Levinson for a lower powered class A or digital amp. I own a pair of the Maestro RS7 and have listened to it with class A (First Watt), class A/B (Sony receiver), class D (Digital Amplifier Company), Class A/B push pull tube (tricked out Sherwood S-5000II), and class A SET (Audio Note Kits 8w 300b Interstage Mono Blocks).
Although each amp sounded very good through the Companion RS7 I preferred the ANK 300b for tube and Digital Amplifier Company for solid state.
http://charneyaudio.com/