This makes it so easy to setup your speakers, the built on crossovers on my subs aren't that great but with the driverack you can choose your crossovers for all speakers to exactly where you want them. And you can do all your eq and feedback suppression right from the unit. And if connected to a router can do it remotely. One thing I wasn't expecting that's pretty cool is the subharmonic synthesis. It uses your full range sound and generates bass frequencies to give you that little extra. Such an awesome feature and there's much more. If you need pa management then this is the device to get!

This thing has completely changed the sound of my speakers for the better! I have 18" PA woofers installed into home made "H-Frame" dipole cabinets and 8" full range drivers on simple "open baffle" flat panels above them. There are no passive crossovers. When I built these I found a pair of Crown XLS 1500 amplifiers on close out. The Crowns have 48db LR crossovers built in so I just used those to cross the full rangers and the bass cabs at around 125 Hz. Preamp duties were handled by my Yamaha receiver which did not have the gain that the Crowns would have preferred. Through a bit of tweaking, at the expense of headroom, I made this work anyway and enjoyed them this way for several years.

Then the PA2 arrived, which I actually bought to help dial in a new 3-way speaker build, and I could finally let the Crowns run full range and could relax the gain setup on my Yamaha (that -10/+4db switch on the back of the PA2 is the golden ticket!) My speakers finally get the high pass 48db @ 350Hz and low pass 12db @ 100Hz that they were designed for and sound superb! Much more headroom, clean power on tap, without clipping, lower distortion, and what sounds to my ears like better channel separation to boot. I can finally run these speakers to concert level SPLs and the Crowns don't even break a sweat (any more!) And the noise floor is DEAD SILENT. I love it!

The only things I would change, if I could, would be that the rack mount ears on the PA2 were removable, to look more at place in a non-rack environment, AND that dbx had simply included a wifi chip on board rather than needing to run CAT5 to a wifi router to use the app. The app DOES work extremely well and besides having very tiny fonts (on my cell phone), it is a joy to use, to adjust parameters right from my favorite listening position.

Great device and the changes it gave me make me think it was worth every penny.

Awesome unit, these things get some bad rap from some of the "pros" due to all of the "auto" features but even the pros can't argue that it replaces a lot of other standalone units. I do not use for Auto EQ, I always walk the room with my iPad and set the graphic EQ and adjust crossover points. The AFS (advanced feedback suppression) is an invaluable tool and should be used by everyone from a wedding DJ to a full FOH setup.

Two things it's missing that would make it 5-stars... #1 is the ability to use "MIDs" output for anything else like a separate output for fill speakers that could have their own delay. Most users are using 2 way mains (or powered speakers with internal crossovers) so they don't need the "MIDs" option. #2 is updated loudspeaker and amplifier profiles. I'm not sure how many settings are truly preset when you load the profiles, but it is shocking that this $450 current model DRPA built by the Harman Group doesn't feature profiles for the current offerings from JBL and Crown. Really scratching my head on that one.

Overall great unit, makes an excellent addition to any loudspeaker setup. The features as well as the savings in space over an entire rack of processing equipment makes it well worth its price.

I actually own a drive rack PA2 which I use on my midfield, JBL studio monitors, I came across this deal and decided to try it on my Nearfield. General speakers with subs, and it is excellent. Though its listed as PA for public address system. It is really a dynamic studio piece. The seller is awesome, product arrived as described, with a surprise of actually being brand new.