Fully working Nystrom Crum Drum. My honest review: this thing is great, it sounds good, it has a lot of playability.
Not much volume out of it, you will need gain to incorporate it in a setup. Its noise floor level is acceptable for me, but it can be problematic if the usb power comes from certain sources. I had no problems when connecting to a computer, (the limited midi functionality works well), and no problem powering it through power bank. I had a humming noise powering two portable synths through a powered usb hub. The delay fx is very subtle, the reverb wash away the sound, the drive fx cut the low frequencies above a certain threshold. The kick drum in combination with the fm bass can produce really nice evolving patterns. This is not an ordinary drum machine 16 steps sequence.