I recently spent a few days servicing my trusty old Roland SH-09, an analog monophonic synthesizer that has been with me since forever. Afterwards I was so astounded with how good it sounded now. The not so simple task of cleaning and re-lubing all the carbon sliders actually improved the sound A LOT. Since I also did the so called noise mod I can now blend in a selectable level of noise along with VCO saw or pulse (and sub osc). This is not possible on an un-modded SH-09. Check out my video and hear for yourself. I suggest using headphones or a good pair of speakers to enjoy the rumbling bassness.