Plugin Boutique is running a 60% discount on Baby Audio Atoms, bringing the physical modeling synth down from $99 to $39 until May 13.
Atoms is Baby Audio’s second virtual instrument, following the analog-flavored BA-1, and it’s a very different animal.
Instead of oscillators, Atoms generates sound using a physical model of interconnected masses and springs that get excited by a virtual bow. What you hear is the simulation responding to your playing in real time.
It’s pretty awesome for sound design. You can get it to sound like strings, plucks, and basses, but from my experience, the sounds it makes best are the ones that don’t exist in the real world.
I’ve had Atoms in my collection for a while, and what I keep coming back to is its super-rich low end. It’s not what I expected from a “physical modeling” synth.
The bass presets sound modern with lots of weight and a slightly detuned character, and they cut through a mix way better than some of my subtractive synths.
The pads and atmospheres are the other reason to own it. Stuff that evolves as you hold chords, seasick pitch wobbles, cinematic drones. Again, it’s great for scoring and sound design.
The six main controls on the front panel (Chaos, Order, Force, Overtones, Drive, and Filter) each have their own built-in modulation, with sine LFO, ramping sawtooth, drift (semi-random), and MPE aftertouch, all of which you can tempo-sync.
That’s what gives the whole instrument a feel more organic than your average synth. You’re not just setting a patch and leaving static. The real fun is when the modulation kicks in.
The randomizer is also very fun. It’s biased toward musically useful results instead of just chaos, and the Recycle button creates small variations on the current patch, which is a nice way to explore around a sound without losing where you started. You can also lock any parameter to keep it from being randomized.
On the other hand, the built-in reverb is pretty basic (just size and mix on an X/Y pad), and Baby Audio leans on it heavily in many presets. I usually swap it for something external.
And while it can definitely do string-like sounds, it’s not really trying to be a realistic orchestral library.
Atoms is available in VST, VST3, AU, and AAX for macOS 10.11 and up (Apple Silicon native) and Windows 10 and up.
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Download: Baby Audio Atoms ($39, 60% OFF until May 13)
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Last Updated on April 30, 2026 by Tomislav Zlatic.
