alm-busy-circuits/o-a-x2
O/A/x2
Dual channel attenuverter with per-channel bipolar voltage offset and LED monitoring, usable for CV editing (LFO phase, level, DC offset) and audio (attenuation, inversion, mixing)1111
Capabilities 3
- Attenuverterattenuverter
- Two independent channels each providing bipolar attenuation and inversion of input signals via the Atten knob1111
- Mixermixer
- With the rear MIX jumper closed, CH1 output normalises into CH2 input, enabling two-channel summing when CH1 output is unpatched1111
- Offsetoffset
- Each channel has an Off knob adding approximately ±8V of independent DC offset, unaffected by the Atten control1111
Jacks 4 (2 in / 2 out)
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (2) | |||
| CH1 Input | mixed | — | 1111 |
| CH2 Input | mixed | — | 1111 |
| Outputs (2) | |||
| CH1 Output | mixed | — | 1111 |
| CH2 Output | mixed | — | 1111 |
Parameters 5
| Name | Type | Range | Behavior |
|---|---|---|---|
| CH1 Atten | knob | -1 – 1 | 1111 |
| CH1 Off | knob | -8V – 8V | Adds or subtracts a bipolar DC offset to the signal; offset is independent of the Atten control setting1111 |
| CH2 Atten | knob | -1 – 1 | 1111 |
| CH2 Off | knob | -8V – 8V | Adds or subtracts a bipolar DC offset to the signal; offset is independent of the Atten control setting1111 |
| MIX Jumper | jumper | — | When closed, normalises CH1 output to CH2 input, enabling use as a two-channel mixer when no cable is patched into CH1 output1111 |
Firmware history 0 versions
No firmware history recorded.
References 2
- [1111]
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[1112]
ALM Busy Circuits O/A/x2 product pageproduct_page● verified 2026-06-03