Hello there, this is my first post so please be gentle!
So i have bought Ibanez btb 676 one month ago. First of all is very easy to play and to access all frets even to 24th fret. I play bass almost 15 years now, and I have played many basses(Fender, Warwick, Yamaha, LTD, Musicman), that one is one of the most playable basses I have played and it is not even heavy for 6 string bass.
Now about the electronics. First of all when everything set to flat you have a very good tone very clean without being very bright or very bassy. The eq pots have a bit short distance so with a minor change on them the sound changes a lot but in general you virtually can achieve whatever sound you want with this eq, is very flexible.
One thing that I have noticed when the treble pot is a bit less than in the middle, in the middle and above middle, is that I have a bit of ham at the PA system, but there is no ham at all to my amp. I am not quite sure if is a problem at the PA system, or instrument's pups or preamp. In general in active bass guitars when you increase the treble to maximum usually there is a ham, in that case though the ham starts before that level but as I said only at the PA system and not at my amp.
Now the bridge system and the fact that is neck through it gives amazing sustain and clarity. The wood combination and the eq features can achieve variety of tones that can fit almost in any kind of music.
In conclusion I totally recommend this bass, very easy to play, variety of tones, lots of sustain. Now about the ham issue that I have said, worst case scenario is to replace the pups or the preamp this means 200-300$ more (of course if I make sure that its the instrument's problem). The fact that this instrument is NT with good woods I wouldnt mind to invest this kind of money to electronics or pups, its a good bargain and still the best value for the money even with this extra cost.