I don't feel this is a high-current amp. If your woofers need a lot of current, you will probably be disappointed.
I have 89db 4ohm B&W 2 1/2 way speakers, and the F10 provides me with great upper midrange and treble, but the low end misses most of the slam and punch that should be there. Also, the lower midrange is not what it should be. I swapped in my friend's Harmon-Kardon home theater traditional SS amp, and all the punch and slam came back. It was like the bass on my speakers "woke up." The lower midrange filled out a lot, as well. But...the high end on the HK was unlistenable after having the F10. I love the F10's open, detailed, airy but never grainy sound. So I'm still using the F10, but I do miss the low frequencies a lot.