Just for the record.
I drive my Apogee Studio Grands with 30 SET Watts and everybody who heard them was more than surprised
And by the way, I prefer the KR Audio VA 350 and the KR Audio Kronzilla SX sonically over the Lamm M1.1 hybrid monos I also have
Granted, the Studio Grands/Studio Ribbon Arrays are the easiest to drive Apogees with 87db per Watt in 3 meters and a linear impedance of around 6 ohms over the whole frequency range
I drive my Apogee Studio Grands with 30 SET Watts and everybody who heard them was more than surprised
And by the way, I prefer the KR Audio VA 350 and the KR Audio Kronzilla SX sonically over the Lamm M1.1 hybrid monos I also have
Granted, the Studio Grands/Studio Ribbon Arrays are the easiest to drive Apogees with 87db per Watt in 3 meters and a linear impedance of around 6 ohms over the whole frequency range