I am in a similar situation- sort of. I own the same amps and speakers running aktiv and I own the 5103 pre-amp. I am considering the purchase of ATC 12's or more likely ATC 20's to possibly replace my Ninkas. I really do love the sound of the 5103- it is an extremely clean and open. What are you looking for sound-wise, that you are not getting now- clarity, soundstaging, etc.?? Maybe I can help you with more feedback based on your response.
