Spirals, KG Series, Pyrite: Free Plugins of the Week
Spirals is a wonderfully spaced-out delay and shimmer reverb plugin that bathes your sounds in a sea of swirly echoes. Also check out the free KG Series from KAGE Music!
Free Plugins of the Week
Daniel Gergely Spirals: Pitch-Shifted Echoes and Shimmer Reverb
If you’re into ambient music or experimental sound design, Spirals by Daniel Gergely should be right up your alley. This combination of a pitch-shifter, delay, and shimmer reverb is your one-stop shop for dreamy soundscapes, ethereal echoes, and endless washes of sound.

Spirals has two delay lines with modulation and an adjustable time offset, so you can run them in parallel, ping-pong, or anything in between. Turn up the diffusion control to create reverb-like textures, and add some pitch-shifted shimmer for that top-end sparkle. Spirals also includes a resonant low-pass filter with an intuitive X/Y pad for control, which makes it easy to create interesting filter sweeps.
The free version is somewhat limited in that it doesn’t offer BPM sync and only supports up to 2x oversampling. That said, it still offers plenty of opportunities to get creative. The full version of Spirals costs $30.
Spirals runs on macOS and Windows in VST3 and AU formats.
KAGE Music KG Series: Free Suite of Mixing Plugins
KAGE Music’s KG Series is a full suite of free mixing plugins for Windows. Perfect if you’re just starting out and don’t have a lot of money to blow on plugins! According to KAGE Music, the plugins were created using a component-level modeling process, replicating the properties and interactions of individual analog components.

The following 11 plugins are included:
- KG-EQP: Pultec-inspired analog-style equalizer
- KG-FREQ6: 6-band EQ for precise tonal shaping
- KG-SUB: Analog-style sub enhancer
- KG-CLARITY: Enhancer
- KG-COMP: RMS compressor for smooth dynamic control
- KG-2A: Optical compressor
- KG-DEESSER: Transparent de-esser
- KG-TUBE: Analog-style saturator
- KG-SATURATOR: 3-band saturator
- KG-VERB: Analog-style reverb
- KG-ARCL: Auto-release limiter
All 11 plugins of the KG Series are currently only available for Windows (VST3).
Signal Perspective Pyrite: Free Preamp Emulation, EQ, and Compressor

According to Signal Perspective, Pyrite began as a disappointing attempt to emulate a Golden Age Pre-73 DLX Mk II preamp. The results were sonically underwhelming due to the linear nature of the original unit, so the developer decided to add some stuff to make it more useful. In addition to the preamp emulation (with saturation), Pyrite includes an EQ section with HPF, Lift, and Air controls, and a compressor. The developer says that it works best on drums and vocals, but can also deliver good results on other types of tracks.
Pyrite is available for macOS and Windows in VST3 and AU formats.
Looking for more free plugins like Spirals, KG Series, and Pyrite? Check out our archive!


