I keep trying to replace it, thinking that there must be something better. But I can't find anything that comes close - there's a massive list of stuff that it does completely right. RE the overdrive and distortion, it is very easy and quick to get a good basic sound, as the two distortion circuits are a modded tubescreamer and a RAT, both with simple 3 knob operation. Beyond this however, you can dive very deep by using the 3 band Parametric EQ and the compressor. After all, the difference between say a Klon and a Timmy and a Tubescreamer and a Bluesbreaker is subtle EQ and compression differences. By starting with either the Nova System 'overdrive' (mid hump, bass cut and treble cut) or the 'distortion' (flatter EQ), you can add little bits of EQ and compressor and push it towards any number of overdrive sounds. Most of my OD sounds are the distortion circuit with the gain set very low and often a little bit of EQ. A couple of other things which make the Nova System awesome: Balanced inputs and outputs - which means I can run long leads and come balanced out of my wireless system into the unit, and could go balanced out to the amp if I wanted to. The layout is super practical, with 3 presets available at all times. I have mine set to Clean, OD, Lead - but there are still instance access buttons for Modulation, Pitch, Delay, Boost and Tap Tempo, so you can add or take stuff from your preset easily. It's a IEC input, no wall wart or expensive power supply needed. It's very easy to program and you can store single favourite FX and add them to any preset in seconds. It's very small but built tough In summary, its a great unit from back in the day when TC Electronics made killer stuff. As I can't find anything better at the moment, I should probably buy a second as backup . . .