> In the absence of a new A-126, does anyone have an idea of how to create a frequency shifter using existing Doepfer modules
>
> Neil

I think that's not possible because of the required dome filter. That's a special allpass filter that shifts all frequencise from
about 50Hz to 10 kHz of the incoming audio signal by 90 degrees). The rest of the job could do two ring modulators, the A-143-9 and
mixers.

But we are working on an new frequency shifter (A-126-2) that will include a squelch circuit. The A-143-9 or any other quadrature
oscillator (e.g. the planned A-101-4) can be used as external quadrature oscillator (i.e. no built in oscillator).

Best wishes
Dieter Doepfer