Atmos
Tone · space · time

Atmos

Four VCV Rack modules for shaping tone, space, and time: the Helix transistor-ladder filter, the Halo stereo repeater, the Skywave character delay with reverb, and the Metro185 step sequencer. A filter, two stereo time effects, and a sequencer to drive them.

Coming soon

Atmos is in final preparation for release. Follow SHLabs for availability.

The four modules

HELIX

Transistor-ladder filter

A 4-pole Moog-style lowpass that self-oscillates and tracks V/oct, so it doubles as a sine source. Three twists go beyond a clone — DRIFT detunes the poles, FRICTION adds per-stage saturation, TURBULENCE feeds noise into the resonance. Simultaneous LP / HP / BP outs, selectable slope, drive, and 16-voice poly.

HALO

Stereo color repeater

A modulated multi-tap delay network with two independent zones and polarizing pitch drift, for smeared, gently detuned echoes that spread a sound across the stereo field.

METRO185

Step sequencer

An eight-stage sequencer in the M185 / Metropolis tradition: each stage has a pitch, a pulse count, and a gate type. The count and gate-type controls are vertical sliders and patchable over polyphonic CV, so the sequence itself becomes modulatable.

SKYWAVE

Character delay & reverb

A multi-model stereo delay with scatter reverb, themed on radio propagation. Three engines — longwave (tape), shortwave (bucket-brigade), and microwave (clean digital) — plus internal modulation, atmospheric hiss and crackle, and clock sync.

Design notes

Atmos modules are designed around the assumption that the listener won't be holding still in front of a knob. They are long-form by default: knob ranges resolve into multi-minute evolutions, modulation depths are calibrated for slow movement, defaults sit at "interesting but not active." Patch one in and leave it.

Aesthetically, the family uses a warm-gold family stripe under each panel header (matching the family color on this site), and panel layouts favor large knobs over crowded jack rows — these are tools you set once and listen to, not modules you re-cable every measure.