Hello

It seems that the highest frequency of the A-110 lies around
1200 Hertz, while the A-121 set to self-oscillation can produce
frequencies up to 14000 Hertz.
Is this correct

Is it possible to produce sine waves of approximately 18000
Hertz with the A-100
I've tried patching the same signal (from A-121) into both Ring
Mod inputs, hoping I could simply double the frequency that way,
but this doesn't seem to work.

And does anybody know where I could get one of those separate
Belton reverb units used for the A-199

Many thanks for help.

MD