Waldorf Protein review: a modern desktop wavetable synth with an 8-bit soul

The Protein marks the first Waldorf desktop wavetable Synthesizer in the budget segment in many years; this review will show whether it’s good

In the past years, Waldorf Music has focused on producing premium flagship instruments, such as the Quantum and Iridium lineups, which are priced higher.

However, repeated calls were made for new, affordable Waldorf products to succeed the Pulse 2, Rocket, or even the classic Blofeld. Waldorf responds, but goes their own way with the Protein, a 329€ desktop Synthesizer. 

Disclosure: Waldorf Music has sent a pre-production unit of the Protein Synthesizer for review. They sent it to me for free, but have no say over the review and don’t get to see it before I publish it.

Waldorf Protein Review Summary 

Pro 

• gritty 8-bit wavetable oscillator goodness 
• flexible and versatile 
• multi-timbrality 
• lots of hands-on controls 
• compact and mobile music production ready (USB-C powered)
• great built quality with smooth knobs 
• price (329€) 

Neutral 

• 8 voices (enough for a single or two-layer but very tight when it comes to 4 parts).

Contra

• user interface (odd mappings, select button heavy…) 
• no editor/librarian (Feb 2026)

Unboxing

My unboxing experience was definitely different. Since my Protein is a pre-production unit, it arrived without official packaging. It also has a slightly different layout and hardware. 

Compared to the release version, a few things are different. It says “All” instead of “Multi” on the interface, the power switch goes the opposite direction, and the special mono/stereo routing option on the outputs is not implemented.

The package contents should be identical: the synth, instructions for the compliant use of the proteins, two USB-C cables (C to C and C to A), TRS MIDI adapters, and a noise isolator.

During testing, I never encountered a situation where I needed the isolator. The signal remained noise-free even on my fully occupied power strip. Of course, the intentional noise I made with the Protein is not part of this.

Upon unpacking, I immediately noticed its very pleasant weight. I was afraid it would be a super lightweight plastic box. No, it’s very well made with a metal front panel and has a comfortable weight (0.75 kg according to Thomann). 

The included printed quick-start manual is a positive, as it provides all the necessary information when you first start using the synth.

Often, this is provided as a PDF file. Having something on paper on your table and reading this is still more pleasing than following on a display, which we already look at all day anyway.

Connectivity 

Let’s take a look at the back. Protein has stereo connectivity with two TS 6.3mm mono jacks. Additionally, an integrated circuit allows TS mono or TRS stereo operation on a single channel. Handy, if you only have a stereo cable. 

I couldn’t test this feature as it’s not integrated into my pre-production model. Next to this is a 3.5mm headphone socket, a USB-C port for power and data (MIDI, firmware updates), a dedicated power switch, and MIDI in and out on TRS minijacks.

Including a USB isolator here makes sense, since USB power is known to be susceptible to interference noise. However, if the USB isolator is properly constructed and shielded, there shouldn’t be any noise. I can confirm this in my testing.

A good counter-example: the Uno Synth Pro X, one of my favorite modern analog synths, is very sensitive to noise and definitely needs an isolator.

Interface

Measuring 252 x 170 x 48 mm, the Waldorf Protein is a very compact Synthesizer that you can easily slip into your bag. With USB-C power, you can even power it easily from any phone charger or power bank on the go.

Practical, yes, but it also means that the developers don’t have as much leeway to include knobs or sliders. Waldorf surprises us here. Even though space is quite limited, they’ve managed to cram a large number of controls into a very small area.

In total, there are 21 knobs (6 endless encoders and 15 potentiometers), 10 buttons, and a small OLED display. The knobs turn smoothly and have a good grip. According to Waldorf, these are the same knobs used in the Quantum/Iridium models.

The interface is structured into seven main areas: layer, pitch, wavetable, filter, envelopes, modulation, and effects. Most of the knobs have dual functions. The blue level can be easily accessed with the Shift key.

The layer buttons light up in red or green, indicating whether a layer is active or where you are currently located. Plus, there are two more feature knobs and a section with five buttons and a white clickable encoder (Select) dedicated to the menu navigation.

Menu-Diving Operation!?

Much of Protein is controllable through the interface, but much isn’t. Expect a mix of the Select knob and menu diving.

I’m not a fan of menu diving. But Waldorf has somehow made the menu system very flat. You have a main menu, but no endless submenus. Don’t worry, there aren’t “pressing three or four buttons at the same time to access X or Y features workflows. Some examples.

You can navigate to the oscillators using the wavetable section and the table knob. To switch from OSC1 to OSC2, briefly turn the  SELECT knob. Very simple. The shift button activates the second knob functions labeled in blue.

Controlling the envelopes is a bit tricky. There are no dedicated ADSR parameters, yeah, meh. However, once you get the hang of it, the solution is quite elegant, even if it’s not great, especially for live performances.

The wave, filter, and amp knobs let you control the envelopes. Each potentiometer tweaks a single stage of the selected ADSR envelope.

To modify, for example, the decay or release value, you have to select the parameter in the envelope menu with the Select knob. The same applies to the modulation engine and effects workflow. Many steps require the Select button.

The Edit button is helpful. Once pressed, you can see all areas of the synth and easily select the desired section. I can live with the workflow, but it’s certainly not the one I’d prefer.

An Editor!?

Creating a layered sound from scratch requires more “Select” knob action. I expected it to be very menu-diving. Although there’s a lot of adjusting involved, the operation is very intuitive for such a small synth.

At the time of my Protein review, Waldorf does not provide an official software editor (early February 2026). I would really like to see an editor for creating more complex patches.

Since we’re already on the topic of patches, an editor would certainly make patch management easier than it is now. During the testing period, the beautiful patches by Kateryna Zavoloka were added with update 1.01.

Transferring them was tricky, as it’s only possible with third-party SysEx librarian software and requires extra menu steps, such as enabling MIDI settings. This could be a bit challenging, especially for beginners with no experience.

Protein is hands-on, yes, you can tweak a lot of things on the interface, but there’s also a lot hidden in the menu backrooms. This balancing act between knobby and light menu diving is unavoidable if you want to use the Protein. Nevertheless, it’s fun if you let yourself get into it.

What is Waldorf Protein, And Is It The Microwave Plugin In Hardware?

Waldorf hasn’t switched to the dietary supplement industry, even though that would probably be significantly more lucrative than developing and selling synthesizers. Protein is a compact, 4-part multi-timbral wavetable Synthesizer with 8 voices powered by two microwave-based oscillators.

Microwave, yes, you probably think of the great Waldorf microwave 1 plugin for macOS, Windows, and iOS. You’re probably wondering whether this is the hardware version, or, more pointedly, a VST in the box?

I also asked Rolf Wöhrmann, the chief developer of Waldorf Protein, about this before the review. In short: no, the two engines are different. There are many differences compared to the plugin.

The oscillators use the same code; the Protein offers the advantage of allowing you to load two distinct wavetables instead of one (microwave 1 plugin/app).

Filter types and envelope behaviour differ and are based on classic designs rather than specific hardware modeling. And there are many small things the app can do that the hardware can’t, or vice versa.

I use the Microwave 1 a lot on iOS, and the two don’t sound the same. While the app is very close to the original, the hardware has its own modern sound with retro crispness.

Microwave Wavetables

Protein has four layers, each with two oscillators, a multimode filter, three envelopes, two multi-wave LFOs, and a routable multi-FX. Everything has a beginning, and our musical proteins are generated in this machine using wavetable oscillators.

Both are identical and use an engine that emulates the microwave ASIC chip to achieve the original gritty, beautifully 8-bit-quantized, aliased sound, running at a 250 kHz sample rate.

They offer identical features: wavetable selection, wave travel, pitch (semitone) level control, envelope amount, and MIDI velocity. There is also an option to link both oscillators together.

I like the small but neat visualization, so you can exactly see where you are in the wavetable. Via a secondary function, you can also use various scales and chords for the pitch.

The option to use two different wavetables makes the excellent microwave oscillator engine significantly more versatile.

But not massively, because it doesn’t feature a sub-oscillator or the popular complex wavetable shapers found in other hardware and software synths. Plus, you can’t import custom wavetables in the current firmware, but hopefully in the future.

Be warned: you can’t really filter out the crunchiness of the oscillators. However, the wavetables also include classic waveforms (61, 62, and 63 values), making it easy to create more traditional virtual-analog sounds.

DIRT 

Hidden in the filter section is the noise generator (DIRT) with five distinct noise/click types: static, crackle, geiger, click, and burst.

The more unusual noise types like crackle, geiger (short, rapid pulses), or burst are a lot of fun here, as they give the oscillators an extra layer of crunch. The section is positioned slightly off, or simply due to space constraints. 

It’s a good thing I waited a bit with the Waldorf Protein review. Firmware 1.02 introduced a ring mod dirt mode, bringing ring modulation to the oscillators. Highly recommended if you want to incorporate a metallic element. 

Also hidden is the pan. It’s in the envelopes section, allowing you to pan the voice manually or randomly using various modes. The random modes bring an exciting, organic stereo effect to the sounds.

Yes, the oscillators aren’t the most feature-rich, but you can see that the developers’ focus here is heavily on the vintage original. This isn’t a bad thing, as the original has a very gritty sound that’s also present here.

Since I don’t own an original microwave, I can neither confirm nor deny its authenticity.

Filtering & Shaping

There is also a filter. It’s a resonant CEM-based analog-style multimode filter, featuring 24 dB/octave and 12dB/octave lowpass and highpass filters. Important: it’s not an emulation of the microwave filters.

Intriguing is the built-in drive section that you can use as an alternative to the filter. It’s not a classic filter drive. It has various distortion types, including transistor, tube, and diode. The feature is somewhat hidden in the menu and not visible on the faceplate.

These let you enrich wavetables with crunch and extra harmonics in case you are not using a filter in your patch. It behaves differently and is more subtle compared to the drive in the effects section. A plus: it’s modulatable.

With the envelope amount potentiometer, you can easily route modulation to it. The last two secondary filter functions are adjustable keyboard tracking and velocity. Let’s talk about modulations

Classic Modulation

Three programmable envelopes and two multi-wave LFOs are the core of the modulation engine. The envelopes are classic ADSR (attack, decay, sustain, release) envelopes. They are snappy but lack advanced features such as curve modes, hold, delay, or looping.

These are missing, but one has to ask: are they needed? And if implemented, they will bring more menu-diving. As seen before, these are operated with the three pot controls (wave, filter, and amp) and the Select knob.

There are two secondary functions: the pan control sets the sound’s panorama position and offers animation options, and the velocity control controls the patch’s volume.

Part of the modulation engine are also two LFOs (global or per-voice, but not audio-rate) with sine, triangle, pulse, sawtooth, saw up, random, and sample & hold. They can run freely or in sync with your tempo. Neat, you can even sync (or free run) the LFO phase of each individual voice.

The hub of this is a solid modulation matrix with eight mod slots, each with source, target, and amount controls. It’s also the home for additional modulators (25 in total), including random generators, keytrack, velocity, aftertouch, MPE, and more.

You can modulate many parameters (23) except the internal effects, a pity. It’s, however, great that you achieve cross-modulations between the modulators. For example, LFO 1 can modulate LFO 2, or the ADSR’s decay.

The ability to individually control the mod depth using a controller is also missing. For LFOs, there are versions that link the mod wheel at least.

The modulation engine in the Protein is very traditional, offering many options for animating parameters and adding dynamics. Sure, an Iridium has significantly more features, but the question is: do you really need that much in such a compact device?

Effects

At the end of the signal path, a multi-FX processor with two FX slots (FX1/FX2) sits. Two, but only one can be used per layer. In a 4-part patch, you can flexibly distribute them.

Each slot can have one effect from nine different classic-favored algorithms: chorus, flanger, phaser, tremolo, drive, compressor, EQ, delay, and reverb. Two delays at the same time are not possible. According to Waldorf, the effects are taken from the Iridium series.

They are operated with two knobs that have dual functions. Additional functions can be found in the menu system via the secondary “parameter” knob. Menu diving is on the agenda here, but it’s fine.

Sonically, they’re high-quality and versatile, but not groundbreaking. They’re classic effects that nicely round out the sound without being overpowering.

The drive is particularly nice, adding extra crunch to the sound and the filter. The reverb is also lovely, no shimmer, but thanks to built-in modulation, it sounds very lush. A downer: none of the effects are available as modulation destinations.

Flavour 

I’ve deliberately omitted one parameter so far, even though it’s very colorful and prominent. It’s the mysterious flavour knob. No, no, it’s not a vintage knob à la Sequential. It introduces subtle micro-parameter variations, primarily in wave position and pitch.

Rolf explained in a preliminary talk that these micro-influences also affect other elements of the patch. But they are probably most audible in the oscillators.

Honestly, you don’t really hear the flavor on many patches. The effect is very subtle. But there are others where the influence is more noticeable. 

Playability 

Connect your MIDI keyboard via the TRS adapter, and you’re good to go. If you have a standard MIDI keyboard and not a fancy Keystep, that’s no problem. The Waldorf Protein offers various creative ways to play sounds.

The synth’s most important performance feature is undoubtedly its multi-timbrality. Protein allows you to layer up to four sounds with a maximum of 8 voices. You can create them using the front panel and the associated buttons. There are various playful modes available. 

You can play them simultaneously (with voice stealing depending on your sounds), in round-robin modes (one sound per key press), or split them over four MIDI channels (MIDI split).

I liked the random round robin mode the best because you can build very complex sound structures with it where each note triggers a different sound. It’s especially great for use with arpeggiators or sequencers. Yes, the last two are also on board.

The built-in arpeggiator features a classic set of familiar functions: various directions, tempo, up to four octaves, swift, and gate. Hidden in the menu are 16 patterns that can breathe new life into the arpeggiator.

I’m still looking for an ARP hold function, or is it not included? The same applies to the sequencer. Waldorf Protein comes with a monophonic 32-step sequencer with live transpose and basic features like playback direction, swing, and more.

Even though the display is mini, I think it’s great that you can tweak the sequencer pattern directly on the hardware. Modern generative functions are not onboard.

The engine is also expressively playable thanks to polyphonic aftertouch and MPE support. As mentioned with the oscillators, you can also explore it with various included scales and chords.

Sound Design

The Waldorf Protein (as of February 2026 – review status) can hold up to 360 preset slots. Firmware 1.01 already increased this from 250 to 360. It ships with 150 professional sound design presets, including basses, leads, pads, and effects.

These are more in the bread-and-butter category. A bit more experimental are those from Kateryna Zavoloka, who gave the presentation in Berlin and contributed additional free presets, which you can find on the official Waldorf website.

A preset filter with categories is also available to help you find your favorite easily. Protein isn’t just a preset machine; it’s a fully-fledged Synthesizer waiting to be programmed.

At first, I found it a bit tiring to press the Shift button or press/turn the Select knob so often. As always, you get used to the workflow. But even after more than a month, it’s still not my favorite way to program a synth.

Sonically, there’s a lot to discover in the new Waldorf synth. I really like creating basses and pads, as the gritty character fits them perfectly. Before hitting the buy button, make sure you like this gritty 8-bit Protein sound.

Protein isn’t the cleanest or most modern-sounding wavetable synth. The grit, the fine-grained noise, or let’s say the digital nasties, is the special sauce that’s almost omnipresent. It’s difficult to remove that from the overall sound.

But if you like the microwave oscillator sound, this is the one for you. In comparison with the Waldorf M, the Protein sounds a bit more subdued and modern. The M is pure microwave goodness with analog filters, but at a different price.

Polyphony is limited to 8 voices, and that’s quickly noticeable. If you fully exploit the 4-part multi-timbrality, you’ll quickly reach this limit. Thus, it’s good to know beforehand whether you want multiple sounds or a single, richer sound.

Sound Demo

Here’s a sound demo using the Waldorf Protein. Since there were already countless factory sound demos available at the time, I deliberately chose to use the new patches by Kateryna Zavoloka and the 12dB filter added later.

Waldorf Protein Review Conclusion

With the Protein, Waldorf offers the most affordable fully polyphonic, multitimbral wavetable Synthesizer on the market to date (new purchase, not secondhand). 

Sound designers with a penchant for retro wavetables, especially the microwave, will find this an inspiring, versatile all-around package. Except for heavy users of Iridium/Quantum or M, who are already well served.

It covers a wide range of modern and vintage-like sounds. All with a certain lovely dirt in their core sound. Its 4-part multi-timbrality offers a wealth of sound design options for expressive multi-flavored sounds.

The engine offers a well-rounded feature set for crafting sounds, but it’s somewhat lacking compared to those of more expensive wavetable synths. Also in polyphony.

Of course, everyone always wants more, but do you really want more menu diving on such a compact device? Me too. I’d prefer a feature set that harmonizes rather than a collection that’s only found in the back right corner or with an editor.

Protein does a very good job of balancing hands-on control with menu diving. Except for a few odd parameter locations (the noise generator in the filter section or the voice pan in the envelopes).

 

Alternatives

• Fred’s Lab Töörö with 6 voices but analog filters (399€), 
• AudioThingies microMonsta 2: all-digital with 2×6 voices but more focused on virtual analog than wavetables. (319€) 

Waldorf Protein is available now for $399 /329 €/£ 299,99. It’s made in Europe + Tunesia. 

More information here: Waldorf 

Available from my partners

Thomann

 

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