using amps as monos and integrated amp as preamp

Is it possible to use two Krell KAV250's as mono blocs and a Krell integrated amp as the pre-amp?
From what I understand, one wouldn't have a single mechanism to control both amps simultaneously.
Why do I ask ? Mainly for cost purposes.
Each 250 is about $1300-1500 and a 300i is about $1000-1200.
I would think this would create some beautiful sound with Maggie 2.5's at a very reasonable cost.
Any thoughts ?