Xfer Data launched Steve Duda’s Serum plugin 12 years in the past. It was an instantaneous traditional that went on to turn into the synth of selection for a lot of producers as a result of its ease of use, flexibility and complicated, upfront sound
Then in 2020, developer Matt Tytel launched Important, a spectral warping wavetable plug-in that shared many design traits with Serum however—most significantly—had a completely functioning free model. It had a stage of complexity and polish that you simply don’t usually see in free software program, so it shortly turned often called a free various to Serum. Though they share many similarities, options corresponding to a further oscillator and distinctive modulation choices arguably made Important superior for sure duties.
However Xfer got here by way of with Serum 2 in 2025, boasting a wealth of recent options that took its sound design credentials to a complete new stage. There’s little doubt that you simply get much more synth with Serum 2, however at $249, do you really want all of it, and is it price it over the options out there in Important?
Oscillators: Serum 2 vs Important
To get a greater thought of what every synth provides so you’ll be able to determine which is greatest for you, we’ll check out every part and evaluate how they stack up, beginning with the oscillators.
Serum 2 contains three major wavetable oscillators, plus a sub oscillator and noise oscillator that can be utilized to load texture layers or transient samples. Important additionally has three wavetable oscillators plus a pattern oscillator, however no separate sub. Given the customarily wealthy nature of wavetables, each synths supply a lot to generate complex-sounding patches. Each even have built-in wavetable editors.
Serum contains two Warp engines that can be utilized to dramatically form your waves, with 32 warp, filter and distortion choices alongside FM, PD, AM and Ring Mod that may be fed from any of the opposite oscillators. Important can’t compete with these numbers, however it does have 15 spectral morph modes, six wave morph modes, plus FM and Ring Mod choices.
Each have versatile unison controls for creating thicker-sounding patches, alongside choices to stack and add delicate variations to every voice. In relation to wavetable synthesis, they’re each very succesful synths, and assuming you load the identical wavetables, each supply a crisp, high-quality sound, with choices for oversampling in case your laptop can deal with it. You may wish to think about that Serum 2 comes with 288 wavetables, whereas the free model of Important solely comes with 25. That is simply expandable with free or paid-for wavetables from the Web.
By way of total flexibility, the hole begins to seem when you think about Serum 2’s 4 new oscillator sorts. Now you can load multisamples, which provides entry to extra organic-sounding, multi-layered pattern patches. There’s a brand new devoted Pattern oscillator that may do looping and slicing, a versatile Granular oscillator, and a Spectral oscillator that may do realtime resynthesis. This dramatically opens up the sound design potential, however it’s possible you’ll not want these extras if you have already got different synths or samplers that fill these roles.
Filters: Serum 2 vs Important
Each synths have two versatile filters alongside the flexibility to route the sign from any of the oscillators, and to do parallel or serial routing.
Serum 2 has a ridiculous variety of filter modes, together with comb, section, flange, formant, scream, ladder and extra. There’s even an choice that allows you to attract 4 variations of advanced notches then mix between them utilizing an XY pad. Excellent for creating these extremely modulated neuro basslines.
Important isn’t any slouch both, with 32 filter choices, every of which will be morphed into totally different shapes utilizing a slider. If we had been to separate hairs, then we’d say the sound of Serum’s filters has a tiny bit extra readability, however each sound incredible and can be utilized to dramatically form the character of the oscillators.
Results: Serum 2 vs Important
Each synths do effectively right here as they’ve an honest assortment of the standard results like distortion, refrain, flange, section, delay, compression and reverb, all of which will be reordered as you see match. Important has 9, whereas Serum 2 has 12, together with new convolution reverb and frequency shifter results.
Important truly does somewhat higher visually, as a few of its results have additional graphical shows that assist present what a few of the controls are doing. Serum 2 wins total, not least as a result of the sound high quality is noticeably crisper and extra detailed, but in addition as a result of it enables you to break up the sign so you’ll be able to course of the lows and highs in another way, and it additionally contains two Bus results, making it simpler to do issues like including some delay to a single oscillator.
Modulation: Serum 2 vs Important
Modulation is an space the place Important actually shines. You may have as much as six envelopes and eight LFOs, with very clear and crisp graphics that make issues simple to comply with. There are additionally two Random oscillators and a strong mod remap operate.
Serum has the same setup, albeit with fewer envelopes however extra LFOs. The random choices constructed into the LFOs are somewhat extra superior and embrace an XY path-tracing function, and it too has a mod remap operate on the modulation matrix web page.
Important has a couple of distinctive mod options which are missing in Serum, although. The LFOs have a stereo offset so you’ll be able to simply have totally different modulation alerts going to the left and proper sides. That is nice on issues just like the filter, as it may possibly add some further width to your sounds. While you drag a mod supply over a parameter, you get a preview of the end result earlier than committing, which helps you to shortly experiment on totally different controls. There’s additionally a scale lock on the oscillators so you’ll be able to create wild, in-key arpeggios and runs by feeding the LFO into the oscillator pitch.
Extras: Serum 2 vs Important
This covers the basics of every synth, however there are a couple of different factors to say. Serum additionally features a mixer web page that will help you with balancing every oscillator and understanding the sign move. It additionally has a complete arpeggiator that allows you to save as much as 12 totally different arp settings on totally different keys, plus a incredible MIDI clip launcher that may flip your keyboard right into a riff efficiency machine.
We’ve been evaluating Serum 2 to the free model of Important, however there are additionally a couple of different variations out there, together with Important Professional for $80, which incorporates 400+ presets, 150 wavetables, a text-to-wavetable function, and some additional skins and perks.
Serum 2 vs Important: do you’ll want to pay?
Up till the discharge of Serum 2, the hole between the 2 synths was a lot smaller, however with the replace, Serum 2 has leapfrogged Important in practically all areas. However that is to be anticipated because it’s an costly synth developed by a complete crew, somewhat than a one-man product.
With hundreds of preset packs out there for each synths, there’s no denying their recognition. One factor to notice, although: though Important has had a number of updates over time, there’s no assure that will probably be developed a lot additional, as it’s created and maintained by a single dev. (Though technically it’s open supply, so who is aware of the place it would go sooner or later). Evaluate that with Serum, which has a extra strong person base, web site and firm behind it.
There’s no denying that Serum is the higher synth total, however it’s additionally costly and rather more advanced. Having so many decisions can generally be a unfavorable once you wish to get to a completed sound shortly, so Important is arguably a better synth to program (albeit one that also has buckets of depth). If you happen to’re out there for a one-to-rule-them-all type of synth, although, then Serum is a worthy funding.
Alex has been writing freelance for MusicTech since 2009. He bought his first copy of Micro Logic and a Roland Sound Canvas 30 years in the past and has by no means seemed again. Since then, he has launched music on a few of the worlds largest dance labels, accomplished numerous main label remixes, composed music for Sync library’s, and even carried out in a pod on the London Eye.
