Focal Sopra 2s are very easy to drive at 91 dB. Consider the Pass Integrated series amplifiers. I'd bet the Class A INT30 would be plenty of power and sound great.
I drive my less efficient Sopra 1s (89 dB) with both my SIT2 (10 watts) and XA30.8 and not only is there plenty of power (especially with the XA) but the Sopras sound marvelous with the Pass.
Toneranger58 is correct....they take time to break in. I've had my Sopras for 14 months. They sound incredible. I'm also using an ARC LS28.
I drive my less efficient Sopra 1s (89 dB) with both my SIT2 (10 watts) and XA30.8 and not only is there plenty of power (especially with the XA) but the Sopras sound marvelous with the Pass.
Toneranger58 is correct....they take time to break in. I've had my Sopras for 14 months. They sound incredible. I'm also using an ARC LS28.