P915 MEDUSA
Overview
P915 Medusa is a Parallel Frequency Balancer.
It reinforces fixed spectral regions and blends them with the original signal, reshaping perceived weight, articulation, and density through contrast rather than removal.
Nothing is cut. Nothing is repaired.
Built for mastering and mix bus finishing, Medusa is also deadly on single sources when you want body, air, or string definition without the sound of EQ.
Additive by Design
Cohesion comes from reinforcement, not precision cuts.
Apparent “reduction” elsewhere is perceptual, the ear responding to redistributed balance rather than filtering.
Built For Structure, Not Correction
Interdependent bands create organization, depth, and motion that feel obvious in context, even when meters barely move.
When a master already tells the truth and just needs to feel complete, P915 Medusa knows exactly where to whisper.
P915 Medusa shapes balance and structure, not sound correction.
30-Day Free Demo
Start your fully functional 30-day demo on 2 computers: click the “DEMO” button, complete checkout, and receive your authorization code by email.
Enter the new reimagined P915 MEDUSA Fixed Filter Bank. A filter which adds subtle or not so subtle resonances to the signal or removing frequency bands altogether. This process, when mixed in with the unaltered, “dry” signal, can mimic the actual behavior of a traditional instrument. It can also act on its own as a unique and creative source of sound shaping possibilities not available in other filter structures.
Videos
Q&A
P915 is not a parallel EQ, even though it lives in parallel.
A conventional parallel EQ still works like an EQ. You boost or cut frequencies, just on a wet path, and then blend that back in. You are still shaping curves, just less destructively.
P915 works differently.
It does not reshape the signal. It adds a structured spectral contribution alongside it.
Think of it as reinforcing balance rather than correcting tone. Instead of saying “this frequency is wrong,” you’re asking “does the sound benefit from energy here?”
That’s why the result feels like reweighting, not EQ.
You hear changes in clarity, density, and projection without hearing obvious boosts or cuts.
That distinction is the core of Medusa.
P915 is built around focused energy zones, not sweepable EQ bands.
The 12 fixed filter bank bands are the heart of the plugin. Each one represents a musically chosen frequency zone. You don’t search for the right frequency, you test it. You apply pressure, listen to the response, and either keep it or close it.
Then you have the two anchors:
Foundation shapes the low end contribution.
It’s not a bass boost. It controls how much low-frequency structure is reinforced.
Depth controls how that low end behaves.
Lower Depth keeps things broad and supportive. Higher Depth tightens and focuses the low-frequency energy.
On the top end, you have High Bloom, which reinforces openness and lift without sounding like a shelf.
Air controls how far that openness extends.
Lower Air feels closer and denser. Higher Air feels more extended and dimensional.
Together, these controls let you shape the skeleton of the spectrum before worrying about details.
This is extremely important.
DELTA is not the sound. DELTA is the microscope.
When you switch to DELTA, you are listening only to what Medusa is contributing. This is where you can make bold decisions quickly. Push a band. Pull another. Listen to how the contribution behaves.
It can sound narrow, aggressive, or strange on its own, and that’s normal. You’re isolating the pressure points.
Once you know what you want to add, you switch to PARALLEL BLEND.
That’s where Medusa is meant to be judged.
You blend the contribution back at 20–40%, sometimes even less, and you listen to how the original signal stabilizes and reorganizes.
If you remember one thing:
Decide in DELTA. Judge in PARALLEL BLEND.
TIME is not a delay and it’s not a widener.
It introduces micro-timing dispersion only in the contribution signal, the dry stays untouched.
So you don’t hear echoes, you hear added dimension.
What surprises people is the center often feels firmer, not weaker.
And because it’s parallel and blended, it stays mono compatible. It’s space without wobble.
Grain is not noise for noise’s sake.
It’s a very low-level textural component designed to give the contribution micro-movement and density, especially when the signal is otherwise very clean or static.
Think of it as a subtle binding agent.
It helps the reinforced structure feel more physical, more continuous, less clinical.
You usually don’t “hear” Grain as a sound.
You feel it as cohesion, especially on sustained material, pads, vocals, or full mixes.
If you bypass it, the sound doesn’t collapse.
It just feels slightly less alive.
That’s the right amount.
A tilt EQ shifts the spectrum by boosting highs while cutting lows, or vice versa. It’s a static slope.
Focus doesn’t work that way.
Focus redistributes where attention goes, not how loud parts of the spectrum are.
When you turn Focus, you’re changing how energy is weighted between the lower and upper pressure points of the fixed filter bank. You’re not boosting one side and cutting the other, you’re shifting emphasis.
That’s why Focus doesn’t feel like “brighter” or “darker” in the usual sense.
It feels more like the sound steps forward or settles back.
It’s a perceptual control, not a tonal one.
Specification
Supported Plugin Formats
AU, VST3, AAX (Apple Silicon ready).
Supported Operating Systems
macOS 10.14+
Windows 7+
Mac
Apple RISC M chip and Intel CPU (Universal 2 Binary)
PC
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.
Downloads
For previously authorized computers
Customer reviews
29 reviews for P915 MEDUSA
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Pulsar Modular P915 is a real Swiss Army knife: versatile, practical, and surprisingly easy to use. Great for shaping sound fast without sacrificing control.
I loved the original version of P915 Medusa, using it both as a sound design tool and for mixing – things just sounded better with it. The reworked P915 is almost a different beast, with a focus on that final 5% on top of a “finished” mix that really makes good into great – and the new Medusa is fabulous sounding and rewards bold experimentation as much as subtle moves. I hope she continues to evolve, perhaps into a tool as equally at home during production as she is making the finished article even more alive.
At first I didn’t really gel with the P915 but after watching Ziad’s instructional video on the plugin I immediately saw how indispensable it would become for my projects. The chosen filters are excellent and I can really coax out tones I wouldn’t easily find with other tools. Many times I’ve been in a situation where I’ve been trying to solve a problem for a long time using EQs and filters and the like and nothing would work until I slapped the P915 on the project and everything would just fall into place after a few twists of a knob.
It is a really great tool to highlight elements in your mixes or just to bring more life to your instruments and even bring out an organic width to your mix. I really recommend getting this plugin even if it might not call to you straight away.
Don’t sleep on this plugin! It seems straightforward enough, but there is some magic in the filters! The tilt control was a great design idea, very useful. The resonance controls on the HPF/LPFs can help make musical choices. As others have said, the P915 excels on electric guitars, you can really build a wall of sound if that’s your thing!
Even though I got it a while ago, I have not really explored it to its fullest. Recently, I used it on a mix with acoustic instruments, such as a fiddle, dobro, and acoustic guitar, with some very nice results.
I need to explore it more, but so far I have enjoyed the results, which are different when compared to just using an eq.