Rotary SD-147 is a rotating speaker cabinet plugin from Slate Digital that models two rotors, a tube amplifier and a built-in virtual microphone system.
Rotary SD-147 at a glance
| Developer | Slate Digital |
|---|---|
| Type | Effects / Modulator |
| Formats | VST3, VST2, AU, AAX |
| Operating systems | Windows 10 or later, macOS 10.15 or later |
| Apple Silicon | Native |
| Architecture | 64-bit |
| Copy protection | iLok |
| RAM | 4 GB or more |
| Price on Plugin Boutique (October 2026) | €101.15 |
What Rotary SD-147 does
Three speeds are offered as Slow Chorale, Stop and Fast Tremolo, with separate speed settings for each rotor, and the speed switch can be automated during a song.
Every parameter is DAW-automatable, and the speed switch can be mapped to a MIDI controller for live use. Pairs of Virtual Tape Machines and Infinity EQ 2 are presented as companion plugins, while Rotary SD-147 itself sits in a chain like any other effect.
Key features
- Rotor and speed controls. Two rotor models share a crossover, and each rotor has its own speed setting in Slow Chorale, Stop or Fast Tremolo, with the speed switch movable within a song.
- Tube amplifier and saturation. The two-channel amplifier model offers adjustable saturation and a user-set crossover frequency between horn and drum, shaping how the rotors are driven.
- Mechanical noise scale. The noise amount runs from realistic and noisy to completely silent and is independent of the audio signal, so the motor sound can be set apart from the program material.
- Mic placement presets. Three preset horn-mic setups at 90 degrees and 180 degrees, plus mono, can be adjusted for distance, offset and angular width on the stereo horn pair and distance and position on the mono baffle mic.
- Mic Bleed and Brake Position. Mic Bleed can be switched on or off, and with it off each mic captures only its rotor, while Brake Position stops the rotors at any chosen angle.
- Tempo Sync and automation. Rotation locks to project tempo with rates shown as multipliers and divisors, and every parameter can be automated, including the speed switch.
Rotary SD-147 compared with similar plugins
Rotary Mod by Eventide is an effects and modulator plugin in VST3, VST2, AU and AAX for Windows and macOS. Spinn by Klevgrand is an effects and modulator plugin in VST2, AU and AAX for Windows and macOS, and it has no VST3 build listed. Blue Cat’s Spinal Vibe from Blue Cat Audio is an effects and modulator plugin in VST2, AU and AAX for Windows and macOS. Things – Motor from AudioThing is an effects and modulator plugin in VST3, VST2, AU, AAX and CLAP for Windows and macOS.
| Plugin | Developer | Type | Formats | Systems | Price |
|---|---|---|---|---|---|
| Rotary SD-147 | Slate Digital | Modulator | VST3, VST2, AU, AAX | Windows, macOS | €101.15 |
| Rotary Mod | Eventide | Modulator | VST3, VST2, AU, AAX | Windows, macOS | €98.18 |
| Spinn | Klevgrand | Modulator | VST2, AU, AAX | Windows, macOS | €43.64 |
| Blue Cat’s Spinal Vibe | Blue Cat Audio | Modulator | VST2, AU, AAX | Windows, macOS | €78.34 |
| Things – Motor | AudioThing | Modulator | VST3, VST2, AU, AAX, CLAP | Windows, macOS | €8.93 (regular €18.84) |
Price and availability
Rotary SD-147 was listed on Plugin Boutique in October 2026 at €101.15. Prices change often, so the store page shows the current one.
Rotary SD-147 FAQ
Does Rotary SD-147 run on Apple Silicon Macs?
Native Apple Silicon support is listed, and the plugin requires macOS 10.15 or higher on the Mac side.
Does Rotary SD-147 need iLok?
Yes. Copy protection is iLok, so an iLok license is required to activate it.
Is there a working serial key or keygen for Rotary SD-147?
Queries pair the name with keygen and serial key, and a working serial is the string most often typed, though the plugin itself is a paid product.