This one heavily features my new diode ladder filter. Roland's famous TB-303 synthesizer gets a great deal of its iconic sound from a diode ladder filter that I thought of a lot while I was building this diode ladder. 303 filters are NOISY, though, and this one is very very quiet.The resonance is high, and ends up being fatiguing.Also, my sound recorder had bad connections somewhere, that's why the sound keeps being bad.Email me! [email protected] me on Youtube or Instructables! ozerikFollow me on Instagram! @juanitohm