Serum 1 vs Serum 2: Differences, Preset Compatibility & Upgrade Guide

Serum 2 is not just Serum 1 with a third oscillator and a wider interface. The familiar wavetable workflow is still there, but Xfer has expanded it into a hybrid synth that can also play samples, build multisampled instruments, process audio as grains and resynthesize it in the spectral domain.

The short answer: if you already own Serum 1, Serum 2 is a free upgrade. Your Serum 1 presets can load in Serum 2, but presets saved in Serum 2 cannot be opened in Serum 1. Existing projects also do not switch to the new plugin automatically, so keeping both versions installed is the safest move while you finish older sessions.

Serum 1 vs Serum 2 at a Glance

Feature	Serum 1	Serum 2
Main oscillators	2, plus Sub and Noise	3, plus Sub and Noise
Oscillator types	Wavetable	Wavetable, Sample, Multisample, Granular and Spectral
Warp processing	One warp mode per main oscillator	Two simultaneous warp slots, plus new modes
Filters	One main filter	Two filters with series or parallel routing and new filter models
Envelopes	3	4, with BPM sync options
LFOs	4	Up to 10, including Path, Chaos and Sample & Hold modes
Macros	4	8
Effects	One reorderable rack, one instance of each effect	Multiple buses, duplicate effects, splitters and new processors
Sequencing	No built-in arpeggiator or clip sequencer	Arpeggiator and piano-roll-style Clip sequencer
Serum 1 preset support	Native	Yes, with Serum 1 Compatibility Mode
Price for Serum 1 owners	—	Free upgrade

Watch the Main Serum 2 Changes in Nine Minutes

This SynthHacker walkthrough is a useful visual companion to the comparison below. The timestamps jump directly to the feature being discussed.

What Actually Changed in Serum 2?

Three Oscillators and Five Sound Engines

Serum 1 gives you two main wavetable oscillators, supported by dedicated Sub and Noise sections. Serum 2 adds a third main oscillator, but the more important change is that each of the three can run in one of five modes.

• Wavetable keeps the classic Serum workflow and adds Smooth Interpolation, new warp choices and two warp slots per oscillator.

• Sample plays a single audio file and includes looping, slicing and rate controls. It is useful when you want to turn a vocal chop, one-shot or field recording into part of a synth patch.

• Multisample maps multiple recordings across the keyboard and supports the open SFZ format. This is the mode for pianos, guitars, strings and other instruments that need several samples to respond naturally across different notes.

• Granular divides a sample into small grains. Changing their position, size, density and pitch can turn a short sound into a pad, moving texture or glitch layer.

• Spectral resynthesizes audio at the harmonic level. It is particularly good for stretching the identity of a vocal, instrument or noisy recording without treating it like ordinary sample playback.

This changes how Serum fits into a project. Serum 1 remains an excellent wavetable synth. Serum 2 can still do that job, but it can also combine a sub, a traditional synth layer and a sampled or resynthesized texture inside one preset.

For a trap patch, for example, oscillator A could provide a clean low end, oscillator B the audible midrange character and oscillator C a granular vocal layer. For ambient or cinematic work, a multisampled instrument can be blended with a spectral texture without opening a separate sampler.

Dual Filters and More Flexible Routing

Serum 1 has one main filter in the oscillator section. Serum 2 has two. They can run in series, where one filter feeds the other, or in parallel, where different parts of the patch can follow different paths.

That sounds technical, but the practical benefit is simple: you no longer have to force every layer through the same tonal treatment. A sub can stay clean while the upper layer passes through a more aggressive filter. A pad can combine a dark low-pass path with a narrow, moving band-pass layer. Serum 2 also adds new virtual-analog and more unusual filter models, so the update is about both routing and sound choice.

A Mixer That Makes Complex Patches Easier to Read

The new Mix view shows the main sound sources, filters and effect buses together. You can balance levels, adjust panning and see where each signal is going without jumping between several tabs.

This is one of the less flashy improvements, but it matters once a preset uses all three oscillators and both filters. It also makes third-party presets easier to understand. Instead of guessing why a patch reacts a certain way, you can inspect its levels and routing from one page.

Effects Are No Longer Locked to One Simple Chain

Serum 1 lets you reorder its effects, but each effect type appears once in a single chain. Serum 2 allows duplicate effect modules and provides multiple buses. That makes it possible to keep one layer dry, send another to reverb and distort only a selected frequency range.

The new modules include convolution reverb, a Bode frequency shifter, additional reverb options, a utility processor and splitter modules for low/high or mid/side processing. The splitters are especially practical for bass design: you can process the mids and highs heavily while keeping the sub centered and controlled.

More Modulation Without Losing the Drag-and-Drop Workflow

The basic modulation method has not changed. You still drag an envelope, LFO or macro onto a parameter and set the amount around the target control. Serum 2 simply gives you more sources and more ways to shape them.

There are now four envelopes, up to ten LFOs and eight macros. Path LFOs can follow a drawn two-dimensional route, Chaos modes generate less predictable movement, and Sample & Hold works well for stepped or random changes. LFOs also have improved drawing tools and can use swing.

Eight macros are useful even if you never design a patch from scratch. A well-built preset can expose separate controls for brightness, movement, attack, width, distortion and ambience instead of trying to squeeze every useful variation into four knobs.

Built-In Arpeggiator, Clip Sequencer and Better Browsing

Serum 2 adds an arpeggiator and a Clip view that works like a compact piano roll. Patterns can be stored with the sound, which means a preset can contain not only a tone but also the phrase or motion it was designed to play.

Whether this matters depends on your DAW. FL Studio users may prefer its full piano roll, and Ableton Live or Logic users may already have a comfortable MIDI workflow. The internal sequencer is more valuable when you want a patch to carry its pattern between projects, switch patterns while performing or work inside a host with limited MIDI editing.

The preset browser is a more universal improvement. Search, sorting, tags and audio previews reduce the time spent opening patches one by one. If you mostly use presets, this may affect your daily workflow more than some of the deeper synthesis features.

What Stayed Familiar?

Serum 2 looks broader and contains more tabs, but it is still clearly Serum. The visual modulation feedback, drag-and-drop assignments, wavetable editing and direct approach to sound design remain. The dedicated Sub and Noise sections are still present, and your existing Serum 1 wavetables and noise files can still be used.

This is why the learning curve is smaller than the feature list suggests. You do not need to learn granular synthesis, spectral processing and multisampling on day one. Start in Wavetable mode with one or two oscillators and the workflow will feel familiar. Add the newer engines only when a sound actually calls for them.

Do Serum 1 Presets Work in Serum 2?

Yes. Serum 1 presets are compatible with Serum 2. They should appear automatically in the Serum 2 browser. When a Serum 1 patch is loaded, Serum 2 enables its S1 Compatibility Mode to preserve the closest possible match to the original sound.

That wording is important. Serum 2 uses a rebuilt sound engine, so it is safer to say that legacy presets are designed to sound as close as possible rather than promise a perfect match in every unusual patch. If an older project is important, leave the original Serum 1 instance in place and compare it before replacing anything.

If your old banks do not appear, do not download them again immediately. First open Serum 1 and confirm that it can see the correct Serum Presets folder. Close your DAW, reopen it and then check Serum 2. Our guide to installing Serum and Serum 2 presets covers the folders, supported preset files and fixes for missing wavetables, noises and samples.

Do Serum 2 Presets Work in Serum 1?

No. Compatibility does not work in reverse. A preset saved in Serum 2 cannot be loaded in Serum 1. This applies even if the patch appears to use only basic wavetable features, so do not assume that a simple Serum 2 preset is backward compatible.

Before buying a bank, check the required plugin version on its product page. You can browse presets made specifically for Serum 2 or explore the wider Serum preset collection, which includes banks created for the original synth.

Preset Files and Extra Content

A Serum 1 bank commonly contains .fxp files. Native Serum 2 presets may use the .SerumPreset format, while a complete bank can also arrive as a .SerumPack file for import through Serum 2’s menu.

Some patches depend on custom wavetables, noises, samples or impulse responses. Keep the downloaded folder structure intact and install every included asset, not only the preset file. A preset can load but still sound wrong when one of its source files is missing.

Will Serum 2 Replace Serum 1 in Existing Projects?

No. Serum 1 and Serum 2 are separate plugins, and Xfer does not automatically replace old instances inside saved projects. That is a good thing: silently swapping the synth could change a finished sound or break project recall.

Keep Serum 1 installed while you still have active sessions that use it. Use Serum 2 for new patches and new projects, then remove Serum 1 only after the older work has been finished, bounced to audio or archived with stems.

How to Upgrade Without Disrupting Old Projects

1. Back up your preset content. Make a copy of your user presets, custom wavetables, noises and any third-party folders before changing their location.
2. Download Serum 2 from your Xfer account. Registered Serum 1 owners qualify for the free upgrade, including eligible Splice Rent-to-Own users.
3. Install Serum 2 alongside Serum 1. Do not remove the old plugin during the first installation.
4. Rescan plugins in your DAW. Serum 2 is available in 64-bit VST3, AU and AAX formats. Make sure your host supports the format you install.
5. Check the preset browser. Confirm that your Serum 1 banks appear and open a few patches that use custom content.
6. Test one real project. Save a copy of the session, open Serum 2 on a new track and compare the relevant presets. Do not replace every old instance at once.
7. Keep both versions for project recall. Move fully to Serum 2 at your own pace rather than treating the upgrade as a forced migration.

You can find the download and current license information on the official Serum 2 page.

Does Serum 2 Use More CPU?

There is no useful one-number answer. A straightforward wavetable patch does not place the same demand on a computer as a three-oscillator patch using granular or spectral processing, high unison counts and several effect buses.

Serum 2 gives you more ways to increase CPU load, which means preset design matters. If a session starts struggling, reduce unison voices, disable unused oscillators, lower oversampling while writing and freeze or bounce finished parts. Xfer specifically recommends keeping unison counts sensible and using a chorus on an effect bus when it can replace large stacks of oscillator voices.

Serum 2 requires Windows 10 or later. On Mac, Xfer lists High Sierra or later for Intel systems and Big Sur or later for Apple Silicon. It runs as a 64-bit VST3, AU or AAX plugin. If your current setup depends on a VST2-only host or an older operating system, verify compatibility before changing your main template.

New users can test the time-limited demo from the official product page. Existing owners can install the update without removing Serum 1, which is the most reliable way to compare performance on their own sessions.

Is Serum 2 Worth Using for Trap, Hip-Hop and R&B?

Yes, but not because every beat needs spectral synthesis. The practical gains are layering, sample-based sound design and faster preset browsing.

• Trap: use separate oscillator layers for sub, midrange body and a noisy or granular top texture. Eight macros also give preset designers more room for halftime movement, distortion, width and ambience controls.
• Hip-hop: turn a short instrumental or vocal recording into a playable texture with Sample, Granular or Spectral mode instead of relying only on bright EDM-style wavetables.
• R&B and trap soul: combine multisampled keys or guitars with pads, filtered noise and slow modulation inside one patch.
• House and techno: use the arpeggiator, Clip sequencer, dual filters and split FX routing for patterns that are stored as part of the preset.
• Ambient and cinematic music: granular, spectral and multisample oscillators make the biggest difference here, especially for evolving pads and hybrid acoustic textures.

If your current tracks mainly need straightforward basses, plucks and leads, Serum 1 is still capable of producing them. Serum 2 becomes more valuable when you want several sound-generation methods in the same patch or need more detailed routing without opening extra plugins.

Who Should Move to Serum 2 Now?

Upgrade now if you already own Serum 1. The update is free, it installs separately and it opens your existing preset library. There is little reason not to try it, provided your operating system and DAW meet the requirements.

Start with Serum 2 if you are buying Serum for the first time. It is the current version, and you can keep the workflow simple by staying in Wavetable mode until you need the newer features.

Keep Serum 1 available if you are finishing older sessions. Preset compatibility is not the same thing as automatic project migration. The original plugin remains the safest option for exact recall.

Test before committing if your computer is old. The extra oscillator modes and routing can build heavier patches than Serum 1. The demo or a side-by-side installation will tell you more than a generic CPU benchmark.

Do not upgrade only because a preset pack says “Serum 2.” First check whether it genuinely requires Serum 2. A Serum 1 bank will already load in the newer synth, while a native Serum 2 bank will not open in Serum 1.

Serum 1 vs Serum 2 FAQ

Is Serum 2 free for Serum 1 owners?

Yes. Xfer Records provides Serum 2 as a free upgrade for registered Serum 1 owners, including users who obtained Serum 1 from an authorized reseller or through the eligible Splice Rent-to-Own program.

How much does Serum 2 cost for a new user?

At the time of writing, Xfer lists a new Serum 2 license at $249 with lifetime free updates. Check the official product page before publishing or buying because pricing can change.

Can Serum 1 and Serum 2 run side by side?

Yes. They install as separate plugins, so an older project can continue using Serum 1 while new tracks use Serum 2.

Will my Serum 1 presets sound the same in Serum 2?

Serum 2 automatically uses S1 Compatibility Mode when it loads a Serum 1 preset to preserve maximum sonic similarity. For an important legacy project, keep the Serum 1 instance and compare the result before replacing it.

Can Serum 2 open Serum 1 preset banks?

Yes. Serum 1 presets are supported and should appear in Serum 2’s browser. Custom wavetables, noises or other required files still need to be available.

Can Serum 1 open Serum 2 presets?

No. Presets saved in Serum 2 are not backward compatible with Serum 1.

Is Serum 2 only useful for sound designers?

No. Sound designers get the most from the new engines and routing, but preset users benefit from the improved browser, audio previews and eight performance macros. If you only need simple wavetable sounds, however, the difference will feel less dramatic.

Should beginners learn Serum 1 before Serum 2?

There is no need. Start in Serum 2 with one wavetable oscillator, one filter and one envelope. The older workflow is still inside the newer plugin, and you can ignore Granular, Spectral and Multisample modes until the basics make sense.

Final Verdict

Serum 2 keeps the part that made Serum 1 easy to learn: clear visual feedback and fast drag-and-drop modulation. The real upgrade is range. Three main oscillators, five oscillator types, dual filters, flexible effect buses and built-in sequencing let one instance cover jobs that previously needed several plugins or tracks.

For current Serum 1 owners, the sensible approach is to install Serum 2, keep Serum 1 for old projects and move new work across gradually. For new users, Serum 2 is the better starting point unless their computer, operating system or plugin host cannot support it. And when choosing presets, remember the one compatibility rule that matters: Serum 1 banks move forward to Serum 2, but Serum 2 banks do not move backward.

Serum Preset Packs to Explore on r-loops

If you want ready-made sounds after comparing the two versions, start with a bank that matches both your genre and your installed Serum version. The first three options below were created for Serum 1 and can also be opened in Serum 2. The final three use Serum 2 or its newer features and therefore require the current synth.

Preset Banks for Serum 1 and Serum 2

Synth City – Serum Bank

A collection of 72 custom presets for trap, R&B and alternative hip-hop. It was created in Serum 1, works in Serum 2 and includes one-shot renders, making it a practical choice if you still use both plugin versions.

LO-FI Hip Hop & Chill for Serum

A bank of 101 presets covering keys, pads, plucks, basses, leads, synths and effects, plus 16 bonus MIDI files. Every preset includes four assigned macros for quick sound shaping.

Antidote – Trap Serum Bank

A focused collection of 35 basses, chords, keys, leads, pads and plucks for hip-hop and trap. It requires Serum 1.34 or later and can also be loaded in Serum 2.

Still looking for the right sound? Explore all Serum preset banks for trap, hip-hop, R&B, house and more — ready for Serum 1 and compatible with Serum 2.

Preset Banks and Libraries Made for Serum 2

Dynasty – Serum 2 Presets

A collection of 60 presets for R&B, hip-hop and trap soul, including keys, pads, guitars, basses, bells, leads, soundscapes and arps. It also contains 114 one-shots, wavetables and SFZ files.

80’s Nostalgia for Serum 2

A Serum 2-only bank with 70 basses, leads, pads and synths for synthwave, outrun and retrowave. Many sounds include modulation-wheel, aftertouch and macro assignments for performance and quick customization.

Serum 2 Upright Bass Library

A velocity-responsive upright bass instrument built for Serum 2’s multisample engine. It contains 201 samples, an SFZ library and supporting presets for soul, R&B, lo-fi, hip-hop, jazz and cinematic music.

Want to explore the synth’s new possibilities? Browse all Serum 2 presets and libraries created for its expanded synthesis engines and workflow.