People may think I am weird, that I use a home computer form the 80s in my studio. But the SID chip sounds amazing. The very unique sound is a great addition for some tracks. I use it with a video capturing card, so I do not need a TV for it. The C64 is controlled via MIDI using the MSSIAH cartridge, and there are M4L devices which makes integration into Ableton Suite super easy. The C64 is a really affordable analog synth: about $70 for the computer (Craigslist) and about $50 (+shipping) for the cartridge.