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Luiz Palhares
Luiz Palhares

Pulsar Audio Mu V1.0.3 VST, VST3, AAX X86 X64

Pulsar Audio Mu v1.0.3 VST, VST3, AAX x86 x64

Pulsar Audio Mu is a plugin that emulates the sound of a legendary variable-bias tube compressor/limiter, widely used for mixing and mastering in the music industry. It is compatible with Windows and Mac operating systems, and supports VST, VST3 and AAX formats.

In this article, we will review the features and benefits of Pulsar Audio Mu, and provide some examples of how it can be used to enhance your audio productions.

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What is Pulsar Audio Mu?

Pulsar Audio Mu is a software emulation of a hardware device that was designed in the 1960s and became a standard tool for professional audio engineers. The original device used tubes to create a smooth and musical compression effect, that could also act as a limiter to prevent clipping. The device was known for its ability to add cohesion or "glue" to buses, whole mixes and masters, while preserving the natural dynamics of the source material.

Pulsar Audio Mu replicates the sound and behavior of the original device with its unique Topology Preservation Technology, which models the saturation of the magnetic flux in the transformers, the precise response of the tubes, and the effects of tiny calibration defects. According to Pulsar Audio, their plugin sounds objectively identical to the hardware in every production context, and even makes improvements such as an increased signal-to-noise ratio.

What are the features of Pulsar Audio Mu?

Pulsar Audio Mu offers several features that make it a versatile and flexible compressor/limiter plugin for various applications. Some of these features are:

  • M/S processing: Pulsar Audio Mu can operate in either Left/Right or Mid/Side modes, allowing you to process the stereo image of your audio in different ways. For example, you can compress the mid channel more than the side channel to create a tighter center image, or vice versa to create a wider stereo image.

  • External sidechain: Pulsar Audio Mu can accept an external signal as its sidechain input, enabling you to trigger the compression based on another audio source. For example, you can use a kick drum track as the sidechain input for a bass track, to create a ducking effect that reduces the bass level when the kick hits.

  • Flexible sidechain EQ: Pulsar Audio Mu provides a four-band equalizer for the sidechain signal, allowing you to adjust the compressor's response to different frequency ranges. For example, you can use a high-pass filter to reduce the influence of low frequencies on the compression, or boost certain frequencies to make them more prominent in triggering the compression.

  • Look ahead/look behind: Pulsar Audio Mu allows you to advance (look ahead) or delay (look behind) the sidechain signal by up to 10 milliseconds. This gives you more control over how the compressor reacts to transients, letting it start to compress before they happen or even after they happen. This can be useful for creating different effects such as smoothing out peaks or adding punch.

  • "Modern" GR visualization: Pulsar Audio Mu reproduces the accurate SIFAM metering of the original device, which shows the gain reduction in decibels. However, it also provides a more modern visualization mode that displays the waveform and gain reduction both over time and instantaneously. This can help you fine-tune your compression settings and see how they affect your audio.

  • Low CPU consumption: Pulsar Audio Mu is designed to be efficient and optimized for modern processors, so it does not consume too much CPU power even when used on multiple tracks or buses.

  • Customizable antialiasing: Pulsar Audio Mu offers three levels of antialiasing (low, medium and high), which affect how the plugin handles high frequencies and avoids aliasing artifacts. You can choose the level that suits your needs and preferences.

How does Pulsar Audio Mu sound?

Pulsar Audio Mu sounds rather transparent with a touch of warmth, as it manages transients in a soft and musical way, even with extreme settings. It can add movement and glue to your audio, while respecting the natural dynamics of the source. You can use it for leveling, limiting, or just to add a bit of analog character with its emulated tube signal path.

To demonstrate the sound of Pulsar Audio Mu, we have prepared some audio examples that compare it with the original hardware device and some other software emulations. You can listen to them below and judge for yourself.

Rock Drum Buss - Dry

Rock Drum Buss - Original hardware

Rock Drum Buss - Pulsar Mu

Rock Drum Buss - Native competitor

Rock Drum Buss - Embedded competitor

Funk Mix Buss - Dry

Funk Mix Buss - Original hardware

Funk Mix Buss - Pulsar Mu

Funk Mix Buss - Native competitor

Funk Mix Buss - Embedded competitor

How much does Pulsar Audio Mu cost?

Pulsar Audio Mu is available for purchase on the Pulsar Audio website for $149.00. However, as of the time of writing this article, it is on sale for $89.00. You can also download a free trial version that works for 14 days without any limitations.


Pulsar Audio Mu is a plugin that faithfully emulates the sound of a legendary variable-bias tube compressor/limiter, with some additional features and improvements. It can be used for mixing and mastering applications, as well as for creative effects. It is compatible with Windows and Mac operating systems, and supports VST, VST3 and AAX formats. It is easy to use, efficient and customizable, and sounds great on any audio source.

If you are looking for a plugin that can add glue, warmth and movement to your audio, while preserving its natural dynamics, you should definitely check out Pulsar Audio Mu. You can download a free trial version from their website and see for yourself how it sounds.


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