Module A-198 is a Trautonium Manual resp. Ribbon Controller. The controlling element of the A-198 is a linear position sensor (length about 50 cm) that has available a pressure sensor too.
Typical applications:
Trautonium manual, the string is replaced by the position sensor that is much easier to use and cheaper than the string.
In combination with the Subharmonic Oscillator A-113, the Trautonium Filter A-104 and some auxiliary modules a complete Trautonium replica may be realized. In combination with the Quantizer A-156 exact semitone intervals are possible.
Dimensions: Width (module): 8 HP / 40.3 mm Depth (module): 40 mm (measured from the rear side of the front panel) Current (module + manual): 40 mA Manual measures: about 600 x 30 x 18 mm !!! 3 Years Music Store Warranty !!!
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The A-198 is a well constructed and nicely expressive controller. It works great with a quantizer for lead lines, especially if you use the pressure to control vibrato depth. When using for control of filter cutoff etc. it is often good to pass the output through a slew limiter for smoother control.