Xfer Records has finally shipped Serum 2, the long-awaited follow-up to one of the most widely used wavetable synths in electronic music production. For MPE users, the headline isn't a brand-new feature — Serum has supported MIDI Polyphonic Expression for years — but a set of quieter refinements that make the existing implementation noticeably easier to work with.
What's New for MPE Players
Serum 2 keeps the same core MPE routing that producers have relied on since the original Serum added support for controllers like the Roli Seaboard and the LinnStrument, but the Global tab now includes a couple of small additions that matter more than they look. There's a new option to auto-map pitch bend directly to the X-axis, removing a step that previously required manual mod-matrix routing for anyone moving from a different MPE-capable instrument. Alongside it, Serum 2 adds a toggle to enable or disable bi-directional control on the X-axis, giving sound designers finer control over how slide gestures translate into pitch movement — useful for anyone building patches around a Seaboard, an Osmose, or an Erae Touch.
These are small changes on paper, but they reflect something worth noting about where MPE tooling is headed in 2026: rather than chasing headline features, plugin developers are spending their effort on the friction points that show up only once you're actually performing with a controller. Auto-mapping pitch bend sounds trivial until you've set it up manually across a dozen different synths.
A Synth Built Around Expression From the Ground Up
Serum 2's other major addition, a new granular oscillator, is not MPE-specific, but it's worth mentioning because of how well it interacts with per-note expression data. Granular playback driven by pressure and slide data — rather than a static LFO — is exactly the kind of texture that MPE was designed to unlock, and early users on forums like KVR Audio have already been experimenting with mapping aftertouch to grain density and Y-axis movement to sample position.
The synth ships with a large library of recorded instruments — orchestral sections, choir, piano, guitar — sampled specifically to take advantage of the new granular engine. Combined with MPE, that opens up expressive articulation possibilities that were previously the domain of dedicated MPE orchestral instruments, at a fraction of the cost.
Pricing and Upgrade Path
Serum 2 is priced at $249 and is a free upgrade for existing Serum 1 owners, which should help it spread quickly through studios that already have the original synth in their template. It's available in VST3, AU, and AAX 64-bit formats, and ships with more than 600 presets and nearly 300 wavetables out of the box.
Why This Matters for the MPE Ecosystem
Serum's popularity means that even modest MPE improvements have an outsized effect on how many producers encounter expressive MIDI for the first time. A huge number of electronic musicians own Serum already, and for many of them, Serum 2's cleaner MPE onboarding will be the first time they experiment with a controller beyond a standard keyboard. That's a meaningful onramp for an ecosystem that has historically relied on smaller, more specialized synths to carry the MPE torch.
It also reinforces a trend that's been building throughout 2026: MPE is no longer a niche feature bolted onto a handful of boutique instruments. It's becoming a baseline expectation for flagship synths, alongside wavetable and granular synthesis, sample playback, and modern effects routing. As more instruments in producers' everyday toolkits pick up cleaner MPE support, the barrier to trying an expressive controller for the first time keeps getting lower — which is good news for the entire hardware and software ecosystem built around it.
Producers curious about pairing Serum 2 with an MPE controller can start with whatever hardware they already own; the new auto-mapping options mean there's less setup standing between unboxing a controller and hearing it move the sound the way it's supposed to.