Plugin Alliance Sale: Unfiltered Audio Sandman Pro Drops to $30

The experimental delay plugin Unfiltered Audio Sandman Pro is currently available for $30, down from $51, as part of a 41% discount running until March 31 on Plugin Alliance.

Developed by Unfiltered Audio, Sandman Pro has built a reputation among producers, DJs, and sound designers as a highly flexible delay processor capable of generating both traditional echoes and extreme sound design effects.

At the heart of the plugin is its unique Sleep mode, which freezes the delay buffer and turns incoming audio into a manipulable loop or grain. Once captured, the audio can be reversed, re-pitched, downsampled, modulated, or processed with noise and filtering, allowing users to transform simple sounds into evolving textures or glitch-driven effects.

Multiple Delay Modes for Creative Processing

Sandman Pro expands on the original plugin with seven delay modes, each designed for a different type of processing. These include Classic Tape, which introduces tape-style saturation and modulation, Modern Instant for artifact-free delay time modulation, and Reverse, which creates smooth reverse echo effects.

Other modes such as Multi-Tap allow up to 16 simultaneous delay lines, ideal for wide stereo echoes and doubling effects. Meanwhile, Pitch Shifter and Glitch Shifter modes introduce harmonic processing and experimental pitch manipulation.

Beyond Traditional Delay Effects

Thanks to extremely short delay times, Sandman Pro can also function as a flanger, chorus, stutter generator, wavetable-style processor, or percussion resonator. Delay times range from 5 milliseconds to over 1,000 seconds, enabling everything from subtle slapback echoes to extended ambient loops.

The plugin also includes Unfiltered Audio’s advanced modulation system, which allows every parameter to be automated using LFOs, envelopes, and a built-in step sequencer. This system supports drag-and-drop routing for fast sound design workflows.

Additional Sound Design Tools

Additional features include cross-channel feedback, stereo offset delays, mid/side processing, diffusion controls for reverb-like tails, and built-in filters for tonal shaping. A Soft Clip saturation stage adds analog-style distortion to both input and output signals.

With its blend of creative delay processing, granular manipulation, and modular-style modulation, Sandman Pro remains one of the most versatile delay plugins available.

The limited-time promotion runs until March 31.

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