Eurorack Reference / modules /bastl-instruments/aikido audit site v0.1 — milestone 3
bastl-instruments/aikido

Aikido

Bastl Instruments

Performative quad VCA mixer with flexible submix routing, two styles of integrated envelope followers (Side Chain and Spectral), clickless mute switches, level faders with 6dB boost, attenuverters on each channel, and patch-programmable cascading mix routing.183

Capabilities 4

Envelope Followerenvelope-follower
Side Chain follower monitors signal amplitude with 3 selectable response curves (FAST/MID/SLOW); Spectral follower monitors Channel D with 3 selectable frequency bands (BASS <100Hz, MID 100-650Hz, TREB >650Hz). Both outputs patchable anywhere.183
Mixermixer
AC-coupled main MIX output sums all four channels. Individual DC-coupled outputs cascade so Channel D carries all four channels mixed when no other outputs are patched.183
Quad VCAquad-vca
Four DC-coupled VCA channels, each with level fader (up to +6dB boost), clickless mute, attenuverter, CV input, and individual output with cascading mix routing.183
Sidechain Compressionsidechain-compression
Normalization chain (SIDE CHAIN ENV → A CV → B CV → C CV → D CV) enables instant sidechain compression without patching; attenuverters select compress (CCW) or expand (CW) response.183

Jacks 16 — 9 in / 7 out

NameSignalVoltageDescription
Inputs (9)
A CVcvLinear CV input for Channel A VCA gain control. Normalized from SIDE CHAIN ENV output; Channel A CV is normalized to Channel B CV.183
A INmixedDC coupled signal input for Channel A, accepts audio and modulation. Normalized to SIDE CHAIN IN.183
B CVcv183
B INmixed183
C CVcv183
C INmixed183
D CVcv183
D INmixed183
SIDE CHAIN INmixedInput to the Side Chain envelope follower. Normalized to Channel A input; patch any signal to override.183
Outputs (7)
A OUTmixedDC coupled direct VCA output for Channel A. Part of the cascading mix chain; plugging in breaks the cascade at that point.183
B OUTmixed183
C OUTmixed183
D OUTmixedDC coupled direct VCA output for Channel D; when no other outputs are plugged, carries the cascaded mix of all four channels. Also serves as the input source for the Spectral envelope follower.183
MIX OUTaudioAC coupled mix of all four channels. MUTE switch state is always reflected. Removes excess DC offset.183
SIDE CHAIN ENVcvCV output of the Side Chain envelope follower, reflecting signal volume. Normalized to Channel A CV input and cascades to B, C, D.183
SPECTRAL ENVcvPatchable CV output of the Spectral envelope follower. Focus frequency band selected by the SPECTRAL switch.183

Parameters 15

NameTypeRangeBehavior
Attenuverter (A)knobControls amount and polarity of CV input applied to VCA. Center (notch) = no effect. CW = positive CV attenuation/amplification. CCW = inverted CV. CCW with envelope follower = compression; CW = expansion.183
Attenuverter (B)knob183
Attenuverter (C)knob183
Attenuverter (D)knob183
LEVEL (A)fader≤6dBFader controls VCA level offset. Unity gain (0 dB) at approximately midpoint; amplifies up to +6 dB at maximum. Combines with CV input via attenuverter.183
LEVEL (B)fader≤6dB183
LEVEL (C)fader≤6dB183
LEVEL (D)fader≤6dB183
MUTE (A)buttonClickless mute toggle with LED indication. Light on = unmuted, light off = muted. Slow press/release creates fade in/out. Always affects MIX output; effect on direct VCA outputs is jumper-selectable (pre/post).183
MUTE (B)button183
MUTE (C)button183
MUTE (D)button183
Pre/Post MUTE jumperjumperBack-panel jumper per channel. PRE: direct VCA output is not affected by MUTE switch. POST: direct VCA output is affected by MUTE switch.183
SIDE CHAIN switchswitch3-position switch selecting envelope follower response curve: FAST (fast attack, fast release), MID (fast attack, slower release), SLOW (long attack and release for exaggerated sidechain effects).183
SPECTRAL switchswitch3-position switch selecting the frequency band the Spectral envelope follower responds to: BASS (<100 Hz), MID (100–650 Hz), TREB (>650 Hz).183

Firmware history 0 versions

No firmware history recorded.

References 2

  1. [183]
    Bastl Aikido Manualmanual
    verified 2026-05-06
  2. [184]
    Bastl Aikido product pageproduct_page
    ⚠ verified 2026-05-06 · manufacturer changed since last verified