The EZQ had been on the market already long before, but, alas, by the time I only realized it might be something of interest, I was told it had been discontinued. I really wouldn't say that Bartolini stuff wasn't well built, but sound is a matter of taste (and budget a matter of one's credit card).
Relatively new still, and also a filter-based design, is the
ACG EQ-02, which you also can get from
Beastbassgear. From the sound samples I've heard so far and from what I've read about it, it seems to be a decent piece of equipment. Of course, again this is a different kind of sound. Alas, I for one don't have a bass right now with which I'm really wanting to swap the circuitry.
Both, btw, have been mentioned before in this Club, so maybe you might venture a search.
Comes the question to
Alembic Activators. Guess no one expects me to not recommend them anyway
It also somehow is clear, that even an Alembic w/ a 2-band EQ sounds like one, while e.g. a Wal despite its filter-based circuitry sounds like a Wal. Actually, someone at Wal quite some time ago already had stated, if there was something like a key ingredient to their signature sound, it actually was their PUs. That gave me to think...
As in all, it depends on the sound you want to achieve, and the instrument you want to modify in order to achieve that sound.