Bose 901s can be EQ'd using any graphic Equalizer with enough boost at both ends of the spectrum. The DEQ 2496 just does so automatically and in the digital domain, plus compensating for the curve of the room(which the Bose EQ does not). It won't do anything for the intermodulation distortion that results, or the fact that the speakers can't possibly creat an accurate image. That not an opinion- it's estabished fact, based on measurable data(the IM) and over 30 years of experience with the design(mine and a multitude of others), using live music as a reference. I WILL grant that using the Behringer and eliminating the Bose piece would probably make the system somewhat more listenable.