Jonathan's "bread'n'butter" synth. Good for lots of analogue-style textures as well as some fairly acceptable reproductions of acoustic instruments, when required. It's capable of producing some dynamic, evolving pad sounds as well.
It's got a pretty basic architecture - four oscillators each going through a filter and then an amplifier. Everything's digital but the filters don't sound too bad for this sort of instrument. Just to listen to them, you'd think that they were about 12 or 18dB/octave but this is ameliorated somewhat by the fact that resonance - quite a lot of it - is available.
It has two card slots, a small LCD and a few buttons. You're supposed to edit sounds with those buttons and one of the two rotary dials (on either side of the display). It's a right royal pain in the arse.
Since the acquisition of the monstrous A4000, it looks like the JV-880 will be used more for obviously digital textures as well as the warm pads that it does so well.