> i have both a198 and r2m and i recommend the r2m.
> it has some improvements compared to the a198,
> f.e. when the a198 is in hold-mode, the voltage drifts
> over time. with the r2m this is not the case.
> also the quantizer in the r2m is really handy.
>
> best wishes
>
> ingo

I'd also strictly recommend the R2M over the A-198. Even the R2M has a
(virtual) non-quantized mode. Actually a 12 bit AD/DA conversion takes place
but this is very close to non-quantized (5V resp. 5 octaves are divided into
4096 steps, i.e. ~ 820 steps per octave or ~ 68 steps per semitone). This
can normally be treated as non-quantized.
The "disadvantage" of the 1/68 semitone quantization is more than
compensated by the additional functions of the R2M (especially Gate function
even in the hold mode and the different quantization modes) even if Midi is
not used.
Only if you need a Gate signal that is triggered by the pressure with
adjustable threshold the R2M cannot do this job. But this could be done with
an additional A-167 module.

Best wishes
Dieter Doepfer