ADDAC 300 V2 (2014–present)
A backdoor into circuit chaos - starve your modules of power and watch them cough, wheeze, and scream.
Overview
A filter that used to sing smoothly sputters, and its resonance collapses into gritty stutters. A delay line burps out warped echoes that dissolve before they finish. A VCO detunes into a swarm of unstable harmonics, then cuts out entirely - only to roar back when you tweak the knob just right. That is the ADDAC 300 V2 doing its job. Power starvation is a compositional tool, a way to make your modular rig breathe, choke, and mutate in real time. The 300 V2 is the second revision of ADDAC's Power Starvation module. It looks like a simple 4 HP utility. Plug an analog module into it, dial down the voltage, and see what kind of ghost signals crawl out.
Starving a chip of power to unlock bizarre sonic artifacts came out of DIY circuit bending, and the 300 V2 brings that practice into Eurorack. It is not for the faint of heart or the tone-pure. This isn't subtle saturation or warm overdrive. It's voltage torture. The module doesn't generate sound itself. It sits between your power bus and another module, and lets you independently reduce both the positive and negative rails from the standard ±12V down to as low as a few volts. Most analog circuits weren't designed to run like this. When starved, they behave unpredictably: filters oscillate erratically, VCAs gate themselves, LFOs speed up and stall, and mixers cross-modulate in ways they never should.
ADDAC is a Lisbon-based modular boutique known for blending analog warmth with experimental interfaces. It didn't just clone a hack, it refined it. The V2 revision improved reliability and added bypass switches for each channel, which makes it easier to A/B the effect mid-performance. The panel is clean black with minimal controls. At 4 HP, it's skiff-friendly and unobtrusive, but it is one of the most sonically disruptive modules you can own. Unlike digital effects that simulate degradation, the 300 V2 does actual circuit starvation, with all the risk that comes with it.
Specifications
| Manufacturer | ADDAC System |
| Production Years | 2014–present |
| Original Price | €70 |
| Width | 4 HP |
| Depth | 40 mm |
| Max Current Draw | 5 mA |
| Power Connection | 8-pin IDC (Doepfer style) |
| Input Voltage | ±12 V (standard Eurorack) |
| Adjustable Output Voltage | Adjustable down to ±3 V per rail |
| Channels | 2 independent power starvation channels |
| Bypass Switches | Yes, per channel |
| Trim Pots | Yes, for setting minimum voltage plateau |
| Mounting Holes | Standard Eurorack 3.5 mm |
| Weight | Approx. 80 g |
| Bus Board Compatibility | All standard Eurorack power buses |
| Module Series | ADDAC 300 Series – Expressive Controls |
Key Features
Voltage Starvation as Performance Tool
The 300 V2 doesn't process audio or CV. It manipulates power. Each of its two channels inserts between a module and the power bus, and lets you independently reduce the +12V and -12V rails using front-panel trimmers. This isn't a global power supply mod. You can starve a single filter while leaving the rest of your system running clean. The effect varies wildly depending on the victim: a Mutable Instruments Clouds might start glitching its granular engine, a Doepfer A-107 filter could collapse into subharmonic growls, or a Make Noise Maths might begin self-oscillating in unpredictable bursts. There's no manual for this. Each module responds differently, and part of the fun is experimentation. The module includes trim pots to set a minimum voltage "floor," so you don't accidentally drop below the threshold where a module dies completely.
Bypass and Stability
The V2 revision added individual bypass switches for each channel, a small but crucial upgrade over the original. Before, you had to repatch or power-cycle to restore full voltage. Now you can instantly compare starved vs. normal operation, which turns the 300 V2 from a set-and-forget mod into a live performance tool. Engage the bypass and your filter returns to its pristine state. Disengage, and it starts wheezing like a broken accordion. The module draws only 5 mA, so it won't burden your power supply, and its passive design means it doesn't introduce noise or coloration when bypassed.
Targeted Chaos
Digital modules will typically just shut down when underpowered, while analog circuits often degrade in musically interesting ways. The 300 V2 works best with analog filters, delays, and oscillators, especially those with analog signal paths and minimal regulation. Modules with onboard DC-DC converters or strict voltage regulation (like many modern digital-analog hybrids) may resist starvation or fail unpredictably. You learn which modules can be pushed, which collapse gracefully, and which might let out a puff of magic smoke if you go too far. It's not a "safe" effect, but it's a real one.
Historical Context
The 300 V2 emerged in 2014, during Eurorack's mid-2010s explosion, when boutique manufacturers were mining every corner of analog weirdness. Most modules at the time focused on pristine signal generation or digital precision. ADDAC went the opposite direction. Power starvation wasn't new. It had long been a staple of circuit bending, where kids would tape resistors over battery contacts to make toy synths glitch. Bringing it into modular required a safer, more controllable approach, and the 300 V2 packaged that trick into a reliable, Eurorack-standard module. It arrived alongside other experimental utilities from ADDAC's 300 Series, like muscle sensors and floor controllers. Companies like Intellijel and Make Noise were refining musicality at the time.
Competitors largely ignored this niche. You could get similar results with external power supplies or DIY mods, but nothing offered the convenience and safety of the 300 V2. It wasn't trying to compete with filters or effects. In an ecosystem increasingly dominated by digital modules with perfect tracking and flawless recall, it appealed to modular users who valued unpredictability. The module was introduced on Mod Wiggler, by a company that still sells direct and encourages hands-on experimentation.
Collectibility & Value
The ADDAC 300 V2 isn't a collector's grail the way a vintage Roland or Moog might be, but it holds steady value among modular enthusiasts. Originally priced at €70, it still trades in that range on the used market, with mint-condition units rarely exceeding €90. It's a passive, low-current module with no complex circuitry, so failure rates are minimal. The main risk is in how it's used: starving a module too aggressively can damage it, so owners of rare or expensive modules tend to be cautious. There are no known design flaws in the V2 revision, and the bypass switches have proven reliable over time.
When buying used, check that the trim pots turn smoothly and that the bypass switches click cleanly. The module relies on IDC connectors, so inspect the pins for bending or corrosion, though this is rare. The 300 V2 doesn't require calibration, and there are no user-serviceable parts beyond the trim pots. It has been in continuous production since 2014, so NOS (new old stock) isn't a concern, and counterfeits are virtually nonexistent in the ADDAC line.
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