I actually use a Venu 360-D speaker management system (the newest dante version which unfortunately recently became discontinued). I wouldn't want to use my passive or powered speakers without it. Like Steve mentioned, it's a step up from the PA2. You have much more professional control of your sound with it. I use a high pass crossover filter on all speakers including powered speakers, and yes even powered subwoofers. I think this is a better way to get more "headroom" than just using a compressor on the main mix. I only send sound frequencies to the speakers (any where between the -3 and -10dB rated speaker frequency range) that the speakers are designed to handle which allow me to achieve higher SPL without added distortion. That wasted low end that the speaker is not designed to take can easily eat headroom even on subwoofers. If you have powered tops and subs from the same line, use the built in crossovers they are engineered to work with if you can, but I always recommend to also add a high pass filter on the sub too. People assume that just because it's a powered speaker that they all have the ideal high pass filter already engaged, but most manufacturers don't even publish at what frequency it is set to if there is one set. Also, many don't publish what kind of crossover filter is used or the slope used. Because of all these unknowns and especially when using different brand tops and subs I always use a speaker management system.
The Venu 360 have nice compressors and peak stop plus limiters on each output. I only use the peak stop plus limiters on the Venu 360 because most professional recorded music is already compressed to the max. I only use the independent compressors within my digital PA mixer mic channels for the mics. The Venu 360 limiter auto function is smooth where you don't really hear pumping when it's in use. Just set your threshold and no signal passes beyond that threshold. This can be a life saver when someone tries to push your main faders on your mixer up while you are not looking. The limiter instantly kicks in at the maximum threshold you set that you are comfortable with before the signal even goes to your speakers.
You also have detailed control to adjust the speaker phase alignment and the already mentioned delay functionality. The AFS2 feedback eliminators are faster and notch filters are more narrower than the previous generation used in the driverack 260 which means the original sound is less negatively affected.
You also get 31 band graphic equalizer and 12 band parametric EQ on the inputs. 8 band PEQ on each outputs. Venu 360 also has a front panel lock out function to prevent unauthorized tampering. All this control can also be made remotely from a phone, tablet, or laptop. I like the ability to remotely mute each input/output. If you have several PA systems and different rooms, you can easily configure them with their own presets even in offline mode. A lot of people will probably say this is way overkill for most mobile DJs, but I personally use all this functionality to get the best sound possible and it only takes 1 rack unit of space.
