P565 Siren Filter Set


The P565 Siren Filter Set is a merge for the perfect workflow of highly coveted filters from different hardware audio equipment with a unique signature sound that makes it a Pulsar Modular product.
P565 Siren features high and low pass filters with selectable slope and tunable musical resonance that brings you into the realm of some of the most sought after resonant filters and beyond. It also features two notch/peak filters designed for precise adjustment and creative expression. Each of these filters can be dynamically modulated based on an external input signal or the built-in dual envelope followers with fine control over attack, release, amount and speed characteristics. These features accumulate to a powerful creative use that ranges from subtle movement to funky rhythmic enhancement while still covering phasing, flanging and resonance sweeps.
P565 Siren doesn’t stop there. Use the drive to give body, character and dimension to any sound or warp it into overdrive, taking your sound to where no overdrive has gone before!


  • Transformer based emulation.
  • Continuously variable high and low pass filters featuring 12/24 dB/oct slope with resonance  or a signature 18 dB option.
  • Two continuously variable 20 Hz to 20 kHz band filters that can be configured as reject filters or pass filters (option to switch to King Tubby style step filters).
  • Configurable envelope follower to modulate the filter frequency selections.
  • Drive and overdrive options.
  • Intelligent, vintage or HD oversampling options.


Audio Examples

Artist Reviews


Supported Plugin Formats

Supported Operating Systems
macOS 10.12+
Windows 7+

Apple Silicon M1 Native and Intel CPU (Universal 2 Binary)

x64-compatible CPU

System Requirements
Display resolution: 1440 × 900px or 1280 × 960px or higher
Memory: 2 GB RAM

Copy Protection
A one-time challenge & response over the internet. License works on up two separate machines.


Latest User Guide


For previously authorized computers

  • Master Volume Screw
  • Update Drive Circuitry
  • Delay on Wet or Dry Signal
  • New presets by Synthient Sound
  • Updated GUI


  • Minor bug fixes.
  • Updated resonance gain to reach self oscillation.
  • Better Wah guitar pedal emulation.
  • Please restart computer after installation.


  • M1 compatible.
  • Please restart computer after installation.
  • Funk MU engine implemented.
  • Side-Chain implemented.
  • Addictive!





40-Day Free Trial

To start your 40-day fully functional trial for 2 computers, Press the "add to cart" Trial button and complete the checkout. Follow the instructions you will get by email. No dongle required.

(19 customer reviews)

Superb sounding with enormous sonic possibilities.

With every full version purchase, a free of charge limited production embroidery hoodie.


  • EUR: € 231
  • TRY: 4.470 ₺


Customer reviews

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Based on 19 reviews
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Showing 18 of 19 reviews (5 star). See all 19 reviews
  1. Reign Studios (verified owner)

    Loving the color this adds to full mixes! Thanks guys!

  2. louisnet2000 (verified owner)

    Best product on the market love the variable high pass filters.

  3. Greg Pritchard (verified owner)

    I make techno and filters are an absolutely essential tool for me in shaping my tones. In terms of pure sound, the P65 Siren is the best filter plugin I have ever heard. I own and use the SoundToys FilterFreak, Audio Damage Filter Station, Softube Mutronics Mutator, and the Softube Overstayer M-A-S Extended which also has resonant lowpass and highpass filters. These plugins all have useful features, but the P65 Siren destroys them in terms of analog authenticity.

    Where most filter plugins fall apart is with the sound of the resonance. The resonance on the SoundToys FilterFreak for example has a very thin and grating sound to it. As anyone who has used analog synths knows, the resonance is a crucial component to getting those deep and huge sounds, to fatten up your kick drum, synth bass etc. The resonance on the P65 Siren sounds fantastic and very very analog. In fact, it reminds me very much of my Electrix Filter Factory, which is my favorite hardware analog filter. Try opening up the HPF to about 31 on a kick drum and then dial in the resonance. You will get an incredibly fat and analog sound.

    With the other filter options like bandpass, notch, etc, this is a very versatile tone shaping plugin. The Drive also has a very unique and aggressive sound, perhaps even too aggressive for some, but certainly useful for electronic music.

    The only improvements that I could suggest are, it would be nice to have LFOs, and the ability to sync the tempo of the modulation to the tempo in your DAW. The Overdrive feature also is extremely aggressive and I think some sort of wet / dry control would be useful. While this plugin does not have as deep a feature set as some others like the SoundToys Filter Freak, it more than makes up for it with the authentic analog sound, which is what I look for in a plugin, and is what Pulsar Modular totally delivers with all their plugins. I also strongly recommend the P42 Climax and the Lunar Lander – they’re both fantastic and the support from Pulsar Modular has also been amazing! Keep up the great work guys!!

  4. Matthias Klein (verified owner)

    P565 Siren filters can compete with any filters on my hardware synthesizers while offering a variety of options and sounds, hence making it superior to hardware. Siren maintains the musical quality, adds no mud and is honest with the transients. The punch is retained and if you want, you can increase punch to absurd levels, without destroying the original signal. You can also go into minus with the RES of the LPF, which I think no other plugin (or Hardware?) does that. I don’t know of any EQ plugin with which you can work as clean and musical in order to eliminate unwanted frequencies, using a notch filter.

    The 18 dB/oct filter has its very own unique charm. The built-in DRIVE is able to add a special character. Many other circuits in other plugins like to remove the punch and the transients from the signal plus making the high frequencies sound glassy-thin and scratchy. The siren’s drive retains the brilliance of the high frequencies a good amount and perfectly preserves the punch of the low frequencies. I haven’t heard anything like this from a plugin before. Siren has 2 envelope followers that can be adjusted very precisely to make them super-groovy. You can also control them via sidechain. There is an option to switch to an emulation of the Mu-Tron pedal via the options menu and elicit previously unheard chucka-quack funky sounds from Siren. I don’t know of any plugin emulation that can do this to such analog-ish perfection (and I know of a few). If Drive isn’t enough, Siren simply shoots into orbit with a brutal Overdrive circuitry.
    There is a delay trim pot on board that you can use on wet or dry signal, together with the MIX knob you can squeeze out phasing, flanging and slapback delays out, there is additional phase rotation on wet and dry signal. Working with Siren is an adventure by itself you start somewhere and ends somewhere else. Join the journey!

  5. sylvain garcia (verified owner)

    P565 Siren Filter Set, like all other Pulsar Modular plugins, ended up replacing my usual “go to”.
    Analog, creamy, deep a pure treat. The drive balances and tames the sound so that it is more docile for further processing.
    Excellence is once again achieved.