...after a few days that I use, I can give you my first impressions of this "beast"
It 'very light (it seems absurd to have a so powerful machine in such a short space and weight!) so much so that my impression touching was "what I bought? a child's toy?"
Instead from the first moment, using it, I have seen the excellent dynamic response of the keys and the accuracy of each control (oscillators, filters, ADSR, dynamic aftertouch...) and it's very easy to use and to program (it comes with a very interesting manual on subtractive synthesis theory; is a free download from Novation too, for those interested).
Thanks to his little weight, I made a stand dedicated to mount the Bass Station II on my SV1 with two small bars of aluminum and some velcro: very stable, portable (fits in Bass Station bag) and very cheap (under 8€ all the necessary material).
The pure analog sound is instantly recognizable, fat, full of harmonics; just exaggerate a minimum with the controls to get mess up hair from the speakers
The secondary filter (Novation calls it "Acid") modeled on a classic filter design (Roland TB-303), remember me the Moog sound.
It has only a mono output, it's a shame does not have the possibility to use effects in stereo... but my live setup is a single speaker, so for me that's great.
It cuts beautifully through a mix (I've already used it in my bands five times), and in addition to the bass sounds you can use the powerful lead sounds for solo parts.
An amusing feature: the external input. You can use an external audio and change it with the Bass Station Filter section... very funny!
In short: I thought of buying a "toy" just for the bass lines and instead I find myself with a new keyboard that I do not think I will leave home easily.