Interesting thread.
Based on Keith Howard's Q3 Lab report:
http://www.bm.rs/Magico/Magico Q3 HiFi News August 2011.pdf
it seems the Q3s needs more power than a DMA-260.
KM's comment that the Q3's -6 db at 42 hz "is perhaps a little disappointing," may explain their problem with big scale Classical music.
Based on Keith Howard's Q3 Lab report:
http://www.bm.rs/Magico/Magico Q3 HiFi News August 2011.pdf
it seems the Q3s needs more power than a DMA-260.
KM's comment that the Q3's -6 db at 42 hz "is perhaps a little disappointing," may explain their problem with big scale Classical music.