1. Module itself.
Housing of this module made of 1,5-2 mm thick steel and it's very heavy. My previous Yamaha module was much lighter! I recommend separate stand or strong module holder.
2. Connection
2box drum module have 3 cymbal inputs suitable as well for single cable Yamaha e-cymbals (use only A inputs) as for Roland-type double cable e-cymbals (A and B inputs is necessery). But what input is for ride cymbal sound I've understood only in experimental way. Every other pad connection passed without problems.
3. Trigger settings
Big problem with setup was HiHat calibration. I tried to calibrate HiHat by manual in the trig.setting. I did everything but my pad isn't work properly! Only on next day I found small knob on the back panel right between two midi ports and with small screwdriwer I was able to achive right rebound of my HiHat at different playing - foot-splash, opening and closing.
4. Sounds
2box filled up this module by almost everything from their downlodable sound from official site. Plus something new. I really enjoyed to play with stock sound, it's so inspirational, new. Yamaha make goodsounding modules, but I wanted something another. In 2box module you can change sound on each pad, but some limits we have. And it doesn't matter. If you can create your own multilayered sounds from whatever you want. Sample meow of your cat, process it in any soundeditor, upload to module and play!
Conclusion:
I really like this module for open system - if you don't like sound, you can delete it and fill up memory by everything you want and love. But 4 GB is not enought for big amount of Hi quality sounds. One HiHat can be 120-150 mb and more!
This module is universal - every trigger by another company will work with this module, only proper trigger profile is necessary. I have 2 Yamaha e-cymbals, 1 V-cymbal crash Yamaha HiHat and absolutly everything works!