Doepfer A-121s Stereo Multimode Filter

The Doepfer A-121s is a 12HP dual multimode filter which can be used for stereo applications as well as for parallel or serial organized dual mono filters.
The core is a 12dB multimode filter identical to the modules A-121-2 and A-121-3. The selection of the filter type is continuously from lowpass via notch and highpass to bandpass.

For the filter parameters frequency (F), resonance (Q) and type (T) common controls and CV inputs as well as single controls and CV inputs are available. For the filter frequency in addition a manual control and CV input for the filter spread (frequency difference or delta F) is available.

Video: https://youtu.be/EoVg1U4h8fA

Product Specs

• Item Number: 23484
• Make: Doepfer
• Model: A-121s Stereo Multimode Filter
• Condition: Brand New
• Finish: Silver
• Categories: keyboards-and-synths ⇒ eurorack
• Function: Dual/Stereo Filter
• Made In: Germany
• MPN: A-121s
• EAN: 4250711112097
• Modular Grid: Eurorack ⓘ ＋
• Dimensions*: 12 HP 45 mm deep
• Power*: 100 mA +12V 100 mA -12V ? mA 5V

* User contributed details