Yeah - no DSP. I don't want ad and then da, the Behringer above, as far as I know aren't dsp based. There is another model above the one I mention that is DSP based.
Oh - and one other general comment I should have put in the top part. One way to minimize the impact of the quality of the crossover is when using the amp-matching part, lower one and keep the other at 0, don't raise either, that way you aren't using any pre-amp aspects of the crossover to raise the level of the signal, and thus lowers the quality requirements of that aspect of the crossover.
Oh - and one other general comment I should have put in the top part. One way to minimize the impact of the quality of the crossover is when using the amp-matching part, lower one and keep the other at 0, don't raise either, that way you aren't using any pre-amp aspects of the crossover to raise the level of the signal, and thus lowers the quality requirements of that aspect of the crossover.