via this auction
"The module has been infrequently used. There is some rack rash as shown in photographs. This listing is only for the RS240 Module and the Doepfer to Analogue Systems power adapter in the power connector, see photo. It does not come with a power cable. The module functioned properly when I tested it last week. The module is not specifically in a Eurorack format (see the Analogue Systems website), but fits nicely in a Eurorack case.
With regard to the adapter to allow use of a "Doepfer" style power cable be sure to align the red stripe on the Doepfer power cable with the end noted "Red" on the PCB. There is also a red stripe on the adapter. It works fine with the +/-12 and +5 volt supply from a Doepfer power supply.
If you are not familiar with Analogue Systems or this particular module, I suggest going to the Analogue Systems web site for more information and the manual. Big City Music also has a listing for a new module with a link on their page for an installation guide.
Analogue Systems
This is an amazing and accurate reproduction of the original Bode/Moog 1630 Frequency shifter in a wonderfully compact form. It has all the features of the Bode/Moog 1630. One very nice and notable behavior is there is no "dead zone" when shifting through zero. Many (all?) the original/vintage Bode/Moog 1630 Frequency Shifters exhibit an annoying dead zone when shifting through zero (I know that at least one of the modern clones has a "dead zone" as well*). That is, the shifter stops shifting the frequency creating a region where no shift occurs as one approaches and moves through zero. The Analogue Systems RS240 doesn't do this. Rather, there is a smooth transition through zero which is far more useful and the correct behavior.
SynthAl on YouTube has a short video which seems to show this 'dead zone.' [see here] "
