Hello John

> keyboardist, it lacks two very common controls: modulation and pitch
> bend.

The A100CGK is built for very small dimensions. Thats the reason why it
does not contain it. In the A-100 range there are already moduls like
the joysticks or the theremins, which can replace this.

The elektronik itself supports wheels:
Quote from http://www.doepfer.de/MKE.htm:

"These units can be connected to MKE:
* Standard keyboard manufactured by FATAR/Italy with 2, 3, 4 or 5
octaves (keyboard types TP/7, TP/8 or TP/9, with velocity)
* Pitch bend wheel (special spring-loaded rotary potentiometer)
* Modulation wheel (special rotary potentiometer)
Remark: Because of technical reasons only the single modulation wheels
of our accessories list can be used in combination with MKE but not the
modulation wheel set !
* Rotary or fader potentiometer for loudness/volume control (Midi CC#7)
* After touch sensor or socket for sustain switch or another
potentiometer for any Midi controller"

Either you connect the announced A-174-2 to it or you add some diy
stuff: http://www.doepfer.de/zubeh_e.htm#modulation%20wheels


Florian