re Bass, I thought the same, but then discovered that the A4 can indeed do bass…badass bass even. for this, you have to reduce the volume of OSC1 (and/or OSC2, whichever you might be using), and then turn up the overdrive in the Filter section… then play with the filters to your liking. the 2nd filter set to 24db lowpass can contribute to nice, round lowasf*** bass. OR use the second filter as a peak filter and add some around the frequency of your liking.
re Presets & styles, I don’t use any of the A4 presets, found all factory presets I’ve auditioned quite cheesy so I stopped going through them. But the sounds I can get out of this thing are amazing, I especially love making pads and atmospheric sounds, it sounds so beautiful and has a very “cosmic” vibe about it… 