The Ampino's power will decline to 12-15w/ch into the Superfly's 16 ohms impedance, and perhaps to 15-18w/ch into Essence. But Essence is 4db less efficient than Superfly. On balance, aside from Superfly being the better-sounding, more tuneful speaker of the two, it will also make better use of the Ampino's power and intrinsic dynamic aliveness, which you'll no doubt appreciate in a large room. I have no doubt that the Superfly super tweeter will be a much better match to this transistor amp than the hot ribbon on Essence. as I've written before, Essence is the least Zu-like speaker, duet the combination of the ribbon super tweeter's less toneful harmonic output, and the unfortunate dialing back of the Zu FRD's intrinsic dynamic capability to accommodate the less efficient ribbon. You end up with an audible dynamic muting relative to the 101db/w/m speakers, and then a slight tone disconnect between the FRD and the super tweeter. Superfly is a thorough improvement over Essence regardless of amplification, but especially so for Ampino and it's ilk. Superfly will also sound more expansive and explosive in HT use.
Phil
