Feature:
The unit can be used also as a 3 way crossover in mono. So I will eventually by another one when I go out and buy two REL subs.

Quality:
Built like high-end home audio components but inexpensive. I really don't understand how.

Value:
This product is worth 3 times the price.

Desirability:
Looks great setting between my two Krells!!! I would have sex with it.

Sound:
Okay, I, as just an experiment, bought this product to see how it would work with my two high-end Krell KSA 250s Power Amps and my home Magnepan 3.6 ribbon speakers. I did it because I could not find a Krell $4000 electronic crossover anywhere, nor a Bryston high-end crossover. This kicks ass. These two amps cost over $13800 for the pair and the speakers are about $4,000. This was the best money I ever, eVEr, EVER, EVERRRRR, spent. The crossover, of course, has balanced inputs and outputs so this worked perfect with my Audio Research Preamp and Krells!!!! I only paid $349 for the crossover.

Overall:
Until my speakers blow up!!!

Feature:
It is the industry standard for PA crossovers.

Quality:
Been using two of these units in a 3500 watt band PA clb scene for over 10 years. Rock solid.

Value:
Best money you can spend in your rack

Desirability:
I won't part with our two units. Worth 3X the asking price.

Sound:
Fantastic quality, transparent no inserted color to the sound