ALM Busy Circuits O/A/x2
Dual attenuverter with bipolar offset
4 HP Eurorack module
The O/A/x2 by ALM Busy Circuits is a dual-channel attenuverter with bipolar voltage offset and LED monitoring. Each channel can attenuate, invert, and offset control voltages or audio signals. A jumper option enables use as a simple mixer. Essential utility for precise CV signal conditioning.
Features
- Dual analog oscillators in compact 6HP
- Continuous waveshaping from triangle to saw to pulse
- Cross-modulation between oscillators
- Independent 1V/Oct inputs for each oscillator
Controls & Jacks (12)
- Ch 1 In— CV/audio input for channel 1 attenuverter/offset
- Ch 1 Offset— Adds a positive or negative DC offset voltage to channel 1
- Ch 1 Atten— Attenuates or inverts the channel 1 input signal (-1x to +1x)
- Ch 1 Red LED— Indicates negative voltage at channel 1 output
- Ch 1 Out— CV/audio output for channel 1
- Ch 1 Green LED— Indicates positive voltage at channel 1 output
- Ch 2 In— CV/audio input for channel 2 attenuverter/offset
- Ch 2 Offset— Adds a positive or negative DC offset voltage to channel 2
- Ch 2 Atten— Attenuates or inverts the channel 2 input signal (-1x to +1x)
- Ch 2 Red LED— Indicates negative voltage at channel 2 output
- Ch 2 Green LED— Indicates positive voltage at channel 2 output
- Ch 2 Out— CV/audio output for channel 2
How-To Guides
- Invert an LFO
- Create Offset CV
- Scale and Shift Modulation
Explore the interactive O/A/x2 panel on BleepDex — tap any control to learn what it does.