> _apart from changing he resistor, if I want to have a larger ambitus
> control would the A-176 allow me to have what I want (outputting a
> straight line, out of the A110, at any pitch)

Yes

> _when using a midi input - how to tune the second oscillator (a
> second A110), say a fith apart from the first A110

Changing the resistor R5 or using the second output of an A-176.

Best wishes
Dieter Doepfer