krell ksa-250- vs ksa-200s vs fpb-200

thanks guys, Im running monitor audio gold reference 60s with Audio Research ls16 pre, not the hardest speaker to drive but I like to rock out and want great control with slamming sound at high spl. I mainly listen to alt rock, 80's industrial and classic rock. By ease of use I mean doesnt sound best after being on for 2 hours. I usually leave my amps on 24/7 but doubt I would want to do so with something like the ksa-250 that draws 1kw at idle and turning on 2 hours before listening is not practicle for me. Thanks

I guess really im just looking for the sound characteristics as compared to each other and which one is going to give me a big rock concert soundstage, right now I'm leaning towards the fpb200 as i read that it has the fullest sound and shares some technologies of the other two amps, but thats based on what bits of information ive scrounged off the internet so I am open to some real world feedback

I have heard both the FPB200 and KSA200s in other systems and the FPB200 in my system a few yrs ago. I loved the FPB in my system to be quite honest. Very smooth and dynamic. It had very good bass but I don't think it had the bass the KSA series has. The FPB sounded more refined than the 200s from what I remember in my buddies system. He preferred the 200s because he thought it sounded more open and powerful but that was in his system. He likes a more detailed sound so I guess it depends on what your looking for and the speakers you have. If I were to pick one or the other I would choose the FPB200 but I like a little more refined sound because I listen to dynamic types of music.

I was one of the original Krell dealers and had KSA 50s, KSA 100s and KMA 100s. They were great amps in their day but that day has passed. Current top A/B amps sound great and can be left on 24/7; I do that with my CJ 350. If I wanted power and bass with a more refined top than the mentioned Krells in that price range I would get one of the big Musical Fidelity integrated amps. They weigh about 100 lbs with separate power supplies and have 350-550 watts depending on model. My NuVista M3, the smallest one, blew away a Mac 402 with matching pre so badly that the owner sold it the next week; this driving Wilson Sasha, which are a difficult load.