5 Free Soft Synths that I Cannot Live Without

As an electronic composer and producer, finding the right tools to bring your music and audio to life is crucial. Over the years, I’ve experimented with countless software synthesizers and sound making wizardry, but there are a few that have become indispensable in my workflow. Here are five free software synths I cannot live without, along with an honourable mention.

1. U-he Tyrell N6

The U-he Tyrell N6 is a powerhouse of a synth that combines the best of both worlds: It possesses the warmth of analog and the flexibility of digital. Originally conceived as a hardware synth, Tyrell N6 was brought to life as a software instrument by U-he. 

It follows the same synth architecture the Roland Juno 60 with some subtle differences and additions. It features two oscillators, noise, ring modulation, and a twin filter setup that gives it a rich, full sound. The modulation capabilities are extensive, with two LFOs and a modulation matrix that allows for complex sound design in a simply laid out synth.

More info and download here

Tyrell N6 - Skinned with Hoverlands 'GrayTech' skin
 

2. Surge XT

Surge XT is an open-source hybrid synthesizer that has gained a reputation for its versatility and powerful sound engine. It offers a wide range of synthesis techniques, including wavetable, FM, and subtractive synthesis and an extensive FX section. With three oscillators per scene and 12 different oscillator algorithms, Surge XT can create everything from classic analog sounds to cutting-edge digital textures. Its modulation system is incredibly flexible, allowing for intricate sound design possibilities. Definitely the most complex free synth in my collection.

More info and download here

Skinned with Roving Eyes - 'Modern Dark' Skin

3. Full Bucket FB-3300

The Full Bucket FB-3300, though not touted as an exact replica, shares similar DNA to the KORG PS-3300, a very rare polyphonic synthesizer from the late '70s. This software version captures the essence of the original hardware, offering three independent polyphonic synthesizer blocks, band-limited oscillators, and classic two-pole low-pass filters. The resonators section and modulation generators add to its sonic versatility.

 More info and download here

4. Martin Lüders - PG-8X

The PG-8X is a virtual analog synthesizer inspired by the Roland JX-8P. It features two DCOs, a 24 dB resonant low-pass filter, and a stereo chorus that gives it a lush, warm sound. The interface is modelled after the PG-800, the external programmer for the JX-8P, making it intuitive for those familiar with the original hardware. The PG-8X is patch-compatible with the JX-8P, meaning you can load and save patches in the same format. It sound near identical to the original hardware - the filter is perhaps a little brighter - simple to rectify!

More info and download here



5. Superwave P8

A mainstay in my plug-in collection and the oldest plug-in I have in my collection. I discovered it on the KVR Audio plug-in directory back in 2003. The Superwave P8 is a virtual analog synthesizer that excels at creating those iconic super-saw sounds reminiscent of the Roland JP-8000. It features eight voices of polyphony, each with two oscillators, and a unison mode that can stack up to 16 oscillators for incredibly thick and lush sounds. The P8 is perfect for trance, EDM, and any genre that benefits from big, wide synth sounds. Its simplicity and focus on super-saw make it a go-to for those specific needs. Yes, the interface looks a little small and dated but, don't be put off by that. 

*WINDOWS ONLY*

More info and download here



Honourable Mention: Computer Music’s ZebraCM

Not technically free, the ZebraCM is a special edition of U-he’s Zebra2 that comes bundled with Computer Music magazine (along with a whole host of other noteworthy stuff), is a versatile synth that offers a taste of the full Zebra experience. It features a powerful synthesis engine with morph-able oscillators, filters, and effects. ZebraCM is perfect for those who want to explore the capabilities of Zebra2 without committing to the full version. It’s such a great tool for sound design, offering a wide range of sonic possibilities from lush pads to intricate sequences.

Personally, I was so impressed by the sound of this synth when it was released, I didn't hesitate to get the full version. Everything created in Zebra CM can be loaded up in Zebra 2 and I often use Zebra CM as a starting point in my sound creation, using the more complex features of Zebra 2 to further develop my sounds.



These software synths have been essential tools in my music production arsenal for some time now and they are the ones I regularly end up reaching for, regardless of what genre of music I'm working on. Each one offers unique features and and employ different methods of synthesis so they have capabilities that cater to different aspects of sound design and music creation. With the exception of ZebraCM these synths are free, but they are all worth exploring.

What are some of your favourite software synths? Let me know in the comments below!

 

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