User Guide
The Main Drift User Guide
Drift, Speed, Flutter, Width, Mix, Tape and Vinyl modes, and practical workflows.
The Main Drift is a free Creative Drift Processor for tape- and vinyl-style pitch/time movement. Use it to add subtle instability, slow worn-out motion, faster flutter, stereo divergence, or more obvious creative warping.
Its motion engine shares its lineage with The Focal Point, but The Main Drift is a complete standalone tool: it adds its own fixed latency handling, latency-matched dry path, Mix control, and aligned Bypass. Its presets are designed for this plug-in and are not interchangeable with Focal Point presets.
Quick Start
- Start with Default Vinyl.
- Set Drift for the overall amount of movement.
- Use Speed to establish the pace, then add Flutter only if the sound needs faster instability.
- On stereo material, raise Width to let the left and right sides move less alike.
- Keep Mix at 100% for a pure drift effect. Move it lower only when you deliberately want chorus- or flange-style interaction.
Drift, Speed, and Flutter
Drift
Drift is the overall depth of pitch and timing movement, from 0% to 100%. Lower settings are weighted toward fine control; higher settings become more pronounced.
At 0%, the pitch movement is inactive, but the engine remains ready and time-aligned. Raising Drift again does not create a startup artifact.
Speed
Speed sets the main movement rate from 0.05 to 3.0 Hz. Slow settings create long, gradual motion. Faster settings make the effect more obvious, rhythmic, or unstable.
The default is 0.55 Hz, which is a useful starting point for an audible but controlled drift.
Flutter
Flutter adds faster, irregular wobble on top of the main movement. Its depth follows Drift: with Drift at 0%, Flutter has nothing to add.
Use Flutter sparingly when you want a more worn, mechanical, or unstable character. Tape uses more flutter than Vinyl by design.
Tape and Vinyl
The two modes choose the character of the movement itself.
Vinyl
Vinyl is dominated by a steady, repeating wobble at the selected Speed. It has a familiar cyclical movement, with a slightly uneven rise and fall that keeps it from feeling perfectly mechanical.
Choose Vinyl for turntable-like motion, repeating pitch sway, or an effect that locks clearly to the Speed control.
Tape
Tape is more irregular. Its movement wanders, its wow is less perfectly repetitive, and it carries more flutter.
Choose Tape for degraded tape character, unstable playback, or a less predictable sense of drift.
Switching modes crossfades smoothly, so you can compare their character without an abrupt jump.
Width
Width controls how independently the left and right channels drift.
- At 0%, both channels move together.
- At 100%, each channel follows its own drift pattern.
Width affects stereo sources only. On a mono track, it has no audible effect — there is no second channel to separate.
Start low when you want the stereo image to remain cohesive. Raise it when the movement itself should create width, uncertainty, or a more unstable field.
Mix
Mix blends the drifting signal with a latency-matched dry signal.
- At 100%, you hear the fully drifting signal.
- At 0%, you hear a time-aligned delayed-dry signal.
Between those endpoints, Mix is deliberately creative rather than neutral. The static dry path and continuously moving wet path interact to create chorus- or flange-style movement. This is not a phase-neutral blend, and it is not meant to be.
Keep Mix at 100% when you want pure pitch/time drift. Bring it down when you want the dry and moving signals to rub against each other as part of the sound.
Bypass and Timing
Bypass passes audio through with a smooth, time-aligned crossfade. The motion engine and delay paths keep running underneath, so re-engaging processing is seamless rather than starting cold.
The fixed latency remains constant at every setting, including Bypass. This keeps the plug-in in sync with the rest of a session and makes it safe to automate or bypass mid-mix without timing jumps.
The Main Drift supports mono-to-mono and stereo-to-stereo processing. It does not upmix a mono signal or force stereo output.
Presets
The Main Drift includes five factory starting points:
| Preset | Character |
|---|---|
| Default Vinyl | Balanced repeating vinyl-style drift. |
| Gentle Tape | Subtle, slow tape movement. |
| Slow Deep | Wide, slow, more pronounced tape instability. |
| Fast Vinyl | Quicker vinyl wobble with added flutter. |
| Broken Transmission | Aggressive vinyl instability for obvious creative warping. |
The preset strip lets you browse these five fixed settings. There are no user presets, Save As, Rename, or Delete functions. Presets do not change Mix or Bypass.
Practical Workflows
Subtle analog character
Use Default Vinyl or Gentle Tape. Keep Drift low, Width modest, and Mix at 100%. The goal is movement that is felt more than noticed.
Slow, deep instability
Start with Slow Deep. Its low Speed and higher Drift create a broad, degraded-tape movement that works well on pads, ambience, sustained synths, or transitions.
Faster creative warping
Start with Fast Vinyl or Broken Transmission. Increase Flutter for more agitation, then decide whether Width should keep the channels together or let the stereo image become less stable.
Chorus or flange movement
Set Mix somewhere between 0% and 100%. Adjust Drift and Speed until the interaction between dry and wet feels musical. This is an intentional alternate use of the plug-in — not a fault or a compromise.
Mono sources
Use Drift, Speed, Flutter, Mode, and Mix normally. Leave Width alone: it does not affect a mono signal.
Updates and Support
The Main Drift is a free, license-free AU and VST3 plug-in for macOS. There is no activation, trial, or purchase process.
The About overlay shows the installed version and provides links to this User Guide, the product page, the Mainline Audio site, and support.
For current downloads, release notes, and support, visit the product page or support@mainline-audio.com.
Final Perspective
The Main Drift works best when its movement has a purpose. Keep it subtle when you want a performance to feel more human or worn-in; push it when instability itself is the character. Start with the endpoints of Mix, then use the space between them when you want the effect to become part of the arrangement.