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We recently took stock of a used Korg MS2000B here at Nerd Audio. The MS2000 is a prime example of early aughts virtual analog synthesis. The B model includes a top mounted XLR jack and a microphone for easy 16-band vocoding, along with a highly attractive gray-black finish not available on the original line. The MS2000B is a workhorse. It can handle sounds ranging from chordal vocoding to wobble bass all the way to reasonably convincing organs. A virtual patchbay and mod sequencer can turn a seemingly paltry 4 voices of polyphony into total cacophony or intricate, weaving soundscapes. A...

A z-plane filter is a filter which can change its function over time.

In a z-plane filter we start with two complex filter types and interpolate between them using a single parameter.

Check out this video of our recently sold vintage reconditioned KORG MS-20 with a wired patch of a guitar.