the t.racks DSP 408

The DSP408 is an amazing piece if equipment.
I used this primarily in my amp rack for signal splitting and crossovers.
The front panel is very easy to navigate and adjust settings.

I used this mainly over the network cable and linked up with the windows software. on most processors the software always Let down the unit. not this one, its worked every time, looks great and is very easy to use. The Eq sections is more than what most people will need, the matrix mixer is fantastic and allows flexible routing.
The delay section is great to use and easy to enter numbers into each channel.
I don't have any problems with any of the other features included in the free software. ( I would recommend using the software for setup for ease of use.)

pros
4 Inputs and 8 outputs make for a very versatile DSP Processor
Networkable makes this very powerful. (connecting it to a wireless router for portable adjusting round venues. )
A vast amount of DSP and your disposal.

Cons
No AES on this unit. but there is another unit with AES and FIR Filters.
Controle software is only windows based

Over all this unit is very powerful and will mean all of your needs for a crossover for speaker management.