This evening, I hooked the HeadRush up to my system, replacing the left monitor with it. It's about 9 feet from me, where the monitors are about 3 feet away. The HeadRush sounded very close to the monitor sound, but with more low end. This is to be expected, since the monitors have a 6" speaker and the HeadRush has a 12". I set the HeadRush at around 2 and used my Focusrite to handle the volume level of it and the monitor, I started nice and low, and started edging it up. I got a really nice loud tone and played Deep Purple's Burn along with a video from Jon Lord's memorial concert. Wow, this thing is fantastic. Held together beautifully.
I am very happy with it. I don't have a single complaint about it.......other than I wish it was out last year when I had to use an in-house amp at the studio and fight to get a good tone. Coupling the Kemper with the HeadRush FRFR is a dream rig. I really wish I had it back then.