Currently, as you know I have a few JBL Control 5's in my studio, I've had them for a while and I still love them, despite having to replacing both of the main drivers every so often In my opinion they're lovely monitors, does a great job! So as a cost effective measure, so I think they'll stay for now. For this reason I'm gonna give powered monitors for a miss - should anyone suggest them. Anyway, I'm thinking of upgrading that power amp to something more suitable. My current amp still works but it's a little crackly and it doesn't have any balanced inputs. Also, I think it's more of an audiophile amp. Budget: I don't wanna go crazy! So i'm gonna limit my budget to £300~1000. Requirment: Balanced inputs Ideally 150W RMS @ 4Ω Linear Rackable a plus Currently I'm looking at the ART SLA2, I've read some good reviews but not had time to test them against the Controls. I'm also aware it's power output is slightly higher then my monitors, so I'm wondering is it possible to cap them using the front pots? I'm also considering the more expensive Flying Mole mono blocks, Class D. Other people have suggested them.. and from the various reviews, they're a sure winner but I'm not sure. Anyone with personal experience? Other suggestions? Anyone?