I own 2 of them now. Very good subwoofers, worth their money.
Used for electronic music (house, techno) - they do deliver what is needed.
Enough low end, real 30Hz, very good handling.
As usual there are some pros and cons, will list them below.
Pros:
Real deep low end, one of the best in the price range and weight category below 40kg.
Good connectivity and deep settings for DSP with presets for cardioid and endfire, bright screen that is visible in both daylight and night, but can be distracting if you do not like the bright blue light.
Wheels included and all 4 are fitted with brakes which makes handling very pleasant, very good grips and not too heavy.
Cardioid preset with 2 of them stacked/next to each other works wonders, Endfire preset works well if you have the correct space.
Cons:
Paint is not super durable, does get scratches easily. Be prepared to spraypaint it or get covers.
DPS is just presets and not fully adjustable, same goes for the frequency - it only limits the upper frequency and is not a true crossover for passthrough. Prepare to buy a crossover if your tops do not have the proper cutoff.
Does not work with mono signals, at least I did not get it - you need both left and right channel inputs to make it work. Maybe I missed some settings, but it requires both channels out of the box.
Summary: If you need a powered sub that can really go down to 30Hz, has good wheels included, is easy to transport and does push some serious volume without breaking the bank - this is the right one for you.
Be prepared to work around the limitations of the DSP - crossover might be needed and if it is a mixed installation with other subwoofers you will need an external setup for Caridioid/Endfire arrays since the presets can't be edited.