Vult DSP
Freak Full DIY kit by Vult DSP
2025
Freak Full DIY kit
Freak is the perfect filter for the people that cannot decide which Eurorack filter to buy. Now you don’t have to make a decision because you can have them all.
Filters included:
- Tangents: Steiner-Parker filter (three variations, LP, HP, BP).
- Lateralus: Ladder filter (6, 12, 8 and 24dB options)
- Nurage: Low pass gate/Borg filter
- Ferox: CMOS filter (LP, HP, BP, Notch)
- Vortex: Russian filter (LP, BP)
- Stabile: State-Variable filter (LP, HP, BP)
- Unstabile Circuit bent State-Variable filter (LP, HP, BP)
- Vorg: MS-20 style filter (LP, HP)
- Rescomb: Resonant Comb filter (Comb+ and Comb-)
- Boomstick: Sallen-Key filter (LP)
The kit comes partially assembled, all the Surface Mount Components are already soldered and the microcontroller comes pre-programmed. You only have to solder Through-Hole components and mount the knobs to start using your filter. The build instructions will be available when the module starts shipping.
Freak is a stereo digital filter that runs most of Vult’s Virtual Analog models. This filter has the power of simulating more than 13 analog filters (and some digital). Every model was meticulously developed to capture the soul of the original circuit and make it efficient so it simulates in real-time inside this 12 HP device.
Availability and Shipping
The Freak full DIY kit is available only on pre-order. Shipping starts in November. Full DIY kit allows you to build your own Freak filter. There is also a assembled version you can purchase.
Vult DSP New Wolv Waveshaper For Eurorack
Over the last years, Vult DSP built a lot of synthesizer circuits. On a few occasions, Leonardo (Vult DSP) make full eurorack modules. For example, some years ago Leonardo designed the PCBs and panel for a Steiner-Parker filter. Leonardo gave away the boards to some of my friends and he believes that there are 4 “copies” in existence.
The last module Leonardo designed is the Wolv wave shaper.
Vult Wolv Sound Demo (Virtual Version)
This is a small demo of the Vult Wolv waveshaper. This virtual version matches the behavior of the hardware version.
Pricing and Availability
If you are interested on getting one of this you can pre-order Wolv Waveshaper here. The estimated shipping is during July 2021.
Patch – The Card Game
For this jam I used James Cigler’s ‘Patch – The Card Game’ (available at Signal Sounds here) to make some patching decisions, but it’s – mostly – a jam and the cards disrupted it :). But that’s part of the game! You can find the game on patchtcg.com. It started with ‘patch every cable you can’ (fortunately I made a selection of cables because I have a lot of them) and making a video also required to make some decisions myself.
At one point I had to patch all inputs of the Loquelic Iteritas Percido and it sounded terrible. So I had to cut it and start over. I wanted to ‘manipulate’ Clouds so I had to film until the dice rolled into a ‘6’ without falling out of my closet. So 99% is real, 1% is creative editing :).
Freak Firmware v2.5
You may already know because most of the new features were requested by the Vult DSP customers. Vult DSP implemented almost all the requests; in one shape or other. The ones that didn’t implemented, are safely stored in the Vult DSP backlog and will work on them for a future release.
This release has a lot of UI improvements. Probably the most important is that now you can select filters backward! If you keep the filter button pressed for about 1 second it will go to the previous model.
A silent improvement that you may not notice is that now the filters change without producing audible clicks or pops. This was a bit tricky to get right.
More settings
In the previous release, Vult DSP introduced the possibility of using “integrated VCAs” to control the filter output. In this release there are a few extra things that you can configure in your module:
- Output signal range: lower the volume of the sound
- Modulations voltage range: accept either 5 or 10 V
- Stereo modulation: cutoff input inversely modulates the the filters
- Output mix: mix the L and R channels
New models
The first new model is Phonok: vowel resonator. Phonok consists of a pair of LP and BP filters tuned to the two main formant frequencies. This resonator changes the tone of the input signal and makes it sound like the corresponding vowel. Phonok can be use to add some nice harmonics to the sound or to make your filter scream in pain “ai-ai-ai”.
Nurage gets some love in this release. Vult DSP has been obsessively experimenting with vactrols in order to improve my models. My new vactrol model is nicer more nonlinear. Since simulated vactrols can be modified at will, the Nurage filter includes now three types. Basically, each model changes in a way that makes it feel like it has a longer “decay”.
The last addition is Nurage-VCA. Low Pass Gates usually have a mode that, for lack of a better name, it is called “both”: a low pass filter and a VCA. Because this mode changes the gain, it also affects the resonance. In this case I have replaced the resonance control for a single parameter that morphs between the different vactrol models. The result is a kind of “decay” control, but with a nice and natural envelope.
Current Filters included:
- Tangents: Steiner-Parker filter (three variations, LP, HP, BP).
- Lateralus: Ladder filter (6, 12, 8 and 24dB options)
- Nurage: Low pass gate/Borg filter
- Nurage-VCA: VCA+LPG variable vactrol
- Ferox: CMOS filter (LP, HP, BP, Notch)
- Vortex: Russian filter (LP, BP)
- Stabile: State-Variable filter (LP, HP, BP)
- Unstabile Circuit bent State-Variable filter (LP, HP, BP)
- Vorg: MS-20 style filter (LP, HP)
- Rescomb: Resonant Comb filter (Comb+ and Comb-)
- Boomstick: Sallen-Key filter (LP,HP)
- Disjoint: DJ-Style filter (48db, 96dB)
- Debriatus: Wave Destructor (Bit Crush, Wave Fold, Distortion)
- Nopskate: Flip-flop octaver
- Flame: Analog distortion (Rodent, Cylinder)
- Phonok: Vowel resonator
Stability
This new firmware also has a lot of small optimizations that should make the module more stable. If you ever experienced your module freezing, I apologize for that. Hopefully, all future releases will be rock-solid now that I have detected the root of the issue.
Pricing and Availability
You can get the new firmware following the links in the main Freak page. The filter is available fully assembled or as DIY kit.
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