The Microwave XTK (on the market since 1999) is the rare keyboard version of the Microwave XT rack synthesizer. But although many sources claim that these instruments are capable of producing PPG sounds, our answer to this common belief is a definite “NO”!
No Microwave synthesizer has ever attained the depth and character of a PPG wave. This by no means disqualifies the Waldorf synthesizers as independent instruments. Quite the contrary! For organic, experimental music with high modulatory potential, the Microwave XT / XTK is often just the right ticket.
For further pictures and information about the Waldorf XT series see:
http://www.waldorf-music.info/en/hardware-archive/microwave-iixtxtk-series