シンセ・モジュール

Notes: The First Aid Kit is here to be your first choice, regardless of whether you're picking out your first utility module, building a minimal system or expanding a large system, by offering a powerhouse toolbox built on the principle of "everything you need, nothing you don't."

Offering ten functions in just 8hp, you can feel assured that you are no longer likely to run into dead ends while patching, because you need just one more utility - no need to buy lots of specialized utility units either, which can be both costly and space ineffecient, as you get all in one with the First Aid Kit.

Functions include:

5v DC source
Buffered multiple
LED voltage indicator
Summing 3-to-1 mixer
Signal inverter
Half-wave rectifier
Full-wave rectifier
Gate-to-trigger generator
Attenuverter
Bipolar and unipolar 8v offset generator
Functions can be used independently of each other, and the unit can be patched with itself for even more functions. Enjoy a toolbox that will solve nearly any problem you're facing, all in a compact-yet-comfortable 8hp.

The First Aid Kit replaces lots of other individual modules, and gives both newcomers an excellent starting point for what can feel like boring but necessary purchases, while also offering excellent utility to both large and small systems.

The First Aid Kit: don't get caught without one when you need it most.

Notes: Solist is not your average performance mixer and mute combination - far from it. Designed in collaboration with Bries, Solist contains four channels of soft vactrol muting, controlled by tactile and pleasantly clicky mechanical switches. Solist will help make your performances shine - but most importantly, the red solo switches allow you to override the current state of the mute switches, allowing for creative transitions between solo and mute states during your performance.

While the audio circuit is fully analogue, it is also entirely isolated from the digital circuit that controls the mutes. Running on a fast and reliable Raspberry Pi RP2040, you get all the benefits of digital control without the downsides of digital audio processing. Best of all, the mechanical state of the switches determine the state of the module, so even if you power cycle, you will return to your previous state.

The analogue mixer section can be used simultaneously with the individual outputs of the Solist, so for those who already have a mixer solution, the buffered individual outputs will bypass the mixer entirely. You may of course also use both simultaneously for exciting parallel processing opportunities.

Solist brings a whole new aspect of muting and soloing to your Eurorack performances, and with soft opening and closing vactrols, you'll never have to worry about clicks, truncated transients or actuation noise.

Notes: Introducing the Cortisol Legend: a spiritual successor to one of my early designs, the Steroid Legend, it presents as 4hp of white hot saturation and hairy distortion, and features manual control over two op-amp driven gain stages, with a diode saturation control in the middle, giving you precise control over distortion ranging from smoldering saturation all the way into utter rail-to-rail fuzzification.

As for the diodes, the Cortisol Legend has two flavors on tap: Steroid Legend-inspired diodes and genuine, Cold War-era USSR-made Germanium diodes from the far reaches of Europe. These diodes are getting increasingly hard to find, but have been known for their warm and fuzzy characteristics by guitar pedal enthusiasts for years. Here, you get the genuine article, for as long as they can be reliably sourced.

In addition to having control over the saturation depth, the Cortisol Legend offers an additional control parameter: Eustress and Distress. Roll off the edge and noise a bit with a Styroflex-capacitor filter which varies with saturation depth, or leave no edge unjagged with this setting.

Speaking of noise, this thing is LOUD, so you may want to have an attenuator such as the psATT on hand, unless of course the loudness is exactly what you want. Hand in hand with the overdrive and distortion comes, of course, beautiful new harmonics added to anything from single waveforms to samples, sounds and entire mixes.

Various diodes will be available at different times, but all variants are ultimately limited - all Germanium diodes used in these are new old stock from the Cold War, and one day they will run out.. Expect individual modules to have a bit of their own character.

Notes: Operation of the Astra is both simple and straightforward - the large touch panel on the front will respond gradually to soft and firm touches, making it easy to inject some human feeling into your compositions.

Being fully analogue, the controller uses an internal vactrol and slew rate limiter to make it easy for you to create smooth transitions - when used without an input, the MMI Astra uses an internal 5v source as the basis of its signal, allowing you to easily generate complex CV to control other modules, in order to create intermittent filter sweeps, resonance peaks and much more.

By using the input, you can route in both CV and audio to destinations of your choosing, attenuating and amplifying by varying pressure and position on the touch plate. Easily introduce LFOs, create huge reverb or volume swells, or intermittently introduce fading soundscapes as you play.

The front facing LED gives you immediate visual feedback on the status of the module as you play, making it easy to control the MMI Astra. It's the MMI you've wanted for years, finally made real.

Sixe: 4HP

Notes: The Pivot is a simple module, dedicated to doing one thing really well: panning and balancing.

The long and smoothly controlled fader makes it easy to strike the right balance between the input and the two outputs, which continuously share each their portion of the input signal. With input buffering and a dual-gang potentiometer, the signal for one channel will fully close at either extreme end and perform with perfect consistency when you need it most.

Use it for panning, wet/dry control, transitioning between different audio or CV destinations - or even just as an attenuator in a pinch. The Pivot isn't the most complicated panner and balance mixer on the market, but rock solid build quality, design and component choices make it a reliable companion in any performance setup.

Notes: For once, there isn't much to say - what you see is exactly what you get. Four passive attenuators, in 4hp. Perhaps the most useful utility in any system, and here, you get four of them! Fully open, fully closed, or somewhere in between, Qatt will put your signal exactly where you want it to be.

Notes: Need an offset voltage? Of course you do, you probably need one all the time, and you can never seem to find one. Well, here's two.

Yes, the Stereo Offset boasts not one but TWO linked offset voltages, and even better, they can be independently set as unipolar or bipolar with jumpers on the back of the module. To further aid your adventure in offsetting, bicolor LEDs will indicate the current state of both outputs.

Smoothly transition between voltages to simultaneously control other functions in your system, either by applying identical voltages to two different places, or by using simultaneous unipolar and bipolar signals for advanced control over your Eurorack system.

Do the right thing - get an offset generator you will love.

Dimensions: 2 HP

Notes: Dual Full Wave Rectification for Fun and Profit

Are you sick and tired of having pesky negative waveforms interfering with your signals? Do you detest seeing the back-and-forth motion of AC waveforms going backwards, then forwards? Those days are OVER with the Herzlich Labs FWR, a dual full-wave rectifier that puts an end to negative waveforms!

When you plug a signal into the FWR, you get two outputs in return, which have fully rectified the input. All negative inputs will be kindly returned to you in pristine, fully positive form. Beautiful bouncy sine waves, turned into pure "Oops! All Positive Waveshapes"-cereal, just the way you like it.

Use it anywhere where you want ONLY positive vibes, or use it with an inverter to get ONLY negative signals, if you please. Yes, you get two of these functions in just 2hp!

Dimensions: 2 HP

Notes: Turn that frown upside down - or make that negative waveform positive. Or vice versa! The Herzlich 180 Invert will shift the phase of any four signals you put in by 180 degrees, effectively inverting them.

This has countless applications: fix phase errors in your mix, turn a low pass signal into a high pass, cancel out unwanted signals, change the behaviour of an LFO or gate, there are countless situations and applications where inverters are incredibly useful.

You'll be happy to own an inverter in any system - but why own just one when you get four here? Add a useful tool to your system today, with the 180 Invert.

Dimensions: 2 HP

Notes: Extremely versatile signal routing is the name of the game here. Eight inputs and eight outputs are connected via the matrix, allowing you to route and mix audio, CV, triggers and gates via the buttons.

Supplier's Notes:
Like four 4x4 Switch Matrix set side by side, the Discrete Isoline Summation Matrix is a true matrix mixer powerhouse, a mad dream and an science experiment gone too far all in one.

As the name implies, the unit contains eight individual inputs and outputs, all of which can be individually routed by way of the isolinear switch matrix on the front panel. Inputs are arranged in rows, while outputs are assigned to columns, making it easy and intuitive to quickly route any given input to any given output. All inputs and outputs are individually buffered, and each mechanical switch offers both tactile and visual feedback in the form of a soft, audible click as well as a connected LED turning on or off to indicate the state of the current junction.

Like it's predecessor, the 4x4 Switch Matrix, the Discrete Isoline Summation Matrix is a DC coupled summing mixer, allowing both CV and audio to be mixed interally, with virtuous or disastrous results.. Finally, the unit is compact at only 28hp, and pairs perfectly with the Qatt quad attenuator, Stum quad mute and 180- quad inverter for greater control over your inputs and outputs.

You already know what you are going to be doing with this - whether your plan is to mix an ungodly amount of CV, create an incredible amount of new trigger patterns, have a massive FX routing setup, or some manner of unspeakable matrix mixer situation on your hands, you will be armed to the teeth with the Discrete Isoline Summation Matrix.

Notes: Touch and Pressure Controller 2HP - Herzlich Man-Machine Interface Micro MMI - passive modular controller for Eurorack systems

The Man-Machine Interface, or MMI, is a passive touch and pressure sensitive controller which allows the user to direct CV and audio signals at will. The MMI consists of three input/output jacks, and five body contact surfaces in glorious gold.

The zig-zag body contacts correspond to the input/output jacks, with the top zig-zag connecting to the top jack, the middle zig-zag connecting to the middle jack, and the lower zig-zag connecting to the lower jack. The spiral patterns in between the zig-zags are comprised of the two adjacent jacks, so the upper spiral is comprised of the upper and middle jack, while the lower spiral is comprised of the middle and lower jack.

In order to operate the MMI, the user can touch any two points with their fingers, patch cables, a piece of fruit or vegetable, or any other conductive substance or object, in order to complete the connection. The degree of contact made with the MMI, and the resistance of the object completing the circuit, will determine the output that is sent along the circuit. For instance, if a user were to patch a VCO into the top jack, and patch the MMI into a filter in the middle jack, the VCO will be sent to the filter when the topmost zig-zag and lower zig-zag are connected by two fingers, for instance.

But how about the spirals? The spirals offer a way to make a connection with one finger. Using the example from before, the connection will instantly complete when the user touches the upper spiral pattern. Using this principle, it becomes possible to use the MMI in unusual and interesting ways, such as a rudimentary keyboard, a drum controller, a switch and any other number of weird and exciting purposes.

It is also possible to combine several MMI - using two different MMI, it is possible to reach across one zig-zag to another zig-zag, in order to make a different connection, or to place a particularly long vegetable across all the contacts just to see what will happen. The MMI is an unusual patching system for the experimental musician, and lends itself well to all manner of experimentation and weird instruments.

The MMI can bleed a tiny bit of signal when using sharp VCO waves like square waves, while other sounds like sine waves will have softer responses. This can easily be corrected with amplification or attenuation as needed.

The Micro MMI takes up 2HP and is skiff friendly, and is also suitable for installing in external boxes as a passive control unit. You can combine any number of MMI to create increasingly complex keyboard-like arrangements, drum pad matrixes or advanced switch systems.

Dimensions
2 HP
10 mm deep

Current Draw
Module does not draw current

Notes: Drawing inspiration from the MMI Maxima, the MMI Helios is intended as a middle ground between the gestural control surface of the Maxima and the fingertip control of the smaller MMI.

Less density, but a much higher degree of patch control is the key point of the Helios, which complements other MMI devices very well, and can be joined with other Helios (Helii?) to form larger and creative control surfaces.

The design is greatly simplified compared to the original MMI, with only two I/O jacks - either can function as input and output, and their interaction with each other is determined by touching both plates simultaneously to form a connection, or in cooperation with other MMI devices.

Available in a "right" and "left" version - one is an exact mirror image of the other, which makes it suitable for having two units adjacent to one another.

Dimensions
8 HP

Notes: *** Updated to v3 in February 2024 with improved hardware and circuitry ***

The Omen is a dual LPG with a bit more than you might be used to. This module was born out of the realisation that it was possible to make far more interesting LPG designs than the standard we've become so accustomed to.

In a convergence of old-school LPG design and more modern components, the Omen boasts two -6dB resonant filters, custom built vactrols, built in CV attenuation and no less than three cutoff modes per filter. Filter 1 is soft and light, imparting a gentle, naturally gated touch of filtering on your sound, while Filter 2 is darker and more resonant, and can turn downright growly and distorted when left wide open.

Designed to give you as many creative options as possible, the Omen has the unique ability to function as either two discrete LPG, or as one 4-pole resonant LPG. When plugging a signal in to Input 1, and with no signal plugged into Input 2, the output will be present at both Output 1 and Output 2, with Output 2 producing the signal as it passes through both filters. Tweaking both filters independently will generate a wide array of soft and sometimes harsh tones, ranging from Buchla bongos to early synthesis brass and organ sounds. There is much to love here.

CV is similarly handled, by plugging in only one CV source, it will act on both channels - this is useful for creating musically similar outputs as well as when using the dual filter operation. However, the dual filter mode greatly benefits from having two CV inputs: use an envelope in CV1 to act as a VCA, and an LFO in CV2 to create tremolo, for instance.

Using custom designed, hand built vactrols, care has been taken to mitigate the less desirable aspects of passive LPGs - in most modules, the user can expect zero bleed through on the LPG channels, and signal attenuation is minimal even with the 4-pole filter settings engaged. Of course, many of the natural features of vactrols remain, such as subtle memory effect when engaging the vactrol for long periods.

Finally, you receive maximum blinkenlights as LED's on the front panel simulate the action of the vactrols, so you'll always know what's going on under the hood. No collection of fancy LPG's is complete without the Omen.

Dimensions
4 HP
36 mm deep

Current Draw
Module does not draw current

Notes: In recent years, stereo signal paths have increasingly found their way into the wonderful world of Eurorack synthesis - so naturally, utilities should follow suit. Introducing the Herzlich PSA, a simple solution to a problem you might not even realize you had. Far from just useful as an attenuator for audio sources in mixdowns, the PSA can also be used to bring audio down to more managable levels (such as line level), attenuate multiple signals simultaneously (like increasing the modulation depth of two LFO's at the same time! It's like having two hands, but with one hand!) and even function as a multiple: Attenuator 1 is normalled to Attenuator 2, so multing your stereo signal (or two mono signals) while attenuating the two signals individually is easy as pie.

There's not much else to say, except that it's passive, and draws no power - and it looks great!

Dimensions
4 HP

Current Draw
Module does not draw current

Notes: Mix it up with the Micro Mix, a dual passive mixer in 2hp that functions as both a 3-to-1 and a 6-to-1 passive mixer, allowing you to perform acts of minor sorcery in your modular system (or maybe outside with your Volca and Pocket Operator jam?).

Nothing knobs or buttons here to confuse you, plug in either audio, CV, clock or triggers, and get the mixed signal out. The best part? Since it's passive, there's no guarantee what you put in is exactly what you'll get out. Embrace the unpredictable world of passive mixing like they did in the 60s and 70s.

Notes: ***B-STOCK: Box opened, product in perfect working order***


Drawing inspiration from the MMI Maxima, the MMI Helios is intended as a middle ground between the gestural control surface of the Maxima and the fingertip control of the smaller MMI.

Less density, but a much higher degree of patch control is the key point of the Helios, which complements other MMI devices very well, and can be joined with other Helios (Helii?) to form larger and creative control surfaces.

The design is greatly simplified compared to the original MMI, with only two I/O jacks - either can function as input and output, and their interaction with each other is determined by touching both plates simultaneously to form a connection, or in cooperation with other MMI devices.

Available in a "right" and "left" version - one is an exact mirror image of the other, which makes it suitable for having two units adjacent to one another.

Dimensions
8 HP

Notes: What's that I hear? You want grit and filth for your system? Tired of not having enough harmonics in your signal? Maybe all your sounds are a bit too cold and sterile?

Why not a light inside your system with the Optika VCA - two independent optical VCAs with drunken muscles and a chip on their shoulder, they can go nice and easy on your signal, or they can inject it with a hot dose of raw power that'll give you guitar-face in no time.

The vactrols? Hand made in my workshop, of course, guaranteed cruelty-free, no dolphins harmed and zero palm oil. The sound? You'll get that slewy, chewy, turn-your-triggers-into-envelopes mess that you love vactrols for, but with the utmost care taken to minimize bleed and all the other things we don't always love about vactrols.

Yes, great, you've got lots of VCAs with "clean gain on tap" and "exemplary responsiveness" and all that other stuff - please excuse me if I'm yawning with utter boredom and rolling my eyes- now, get yourself a fully analog optical VCA that'll make your hairs stand on end when you push the gain into distortion and press the vactrol into saturation.

Use it for stereo, use it for two signals, use both channels in sequence, but please let your signals go towards the light and put it to use! Don't make me beg

Notes: Beauty. Refinement. Attenuversion.

It's another Herzlich Labs release: the 2hp stereo Attenuverter. Two channels of connected attenuversion, allowing you to fully and smoothly invert any signals you plug in - turn negative to positive, turn phase to antiphase, and find all the variations in between.

With the usual pleasantly tactile sliding pot, the sAttenuverter is both performance friendly and inspiring to use. Extremely suitable for linked mono signals and stereo alike, it will feel right at home in the increasingly popular stereo setups in modular.

Dimension: 2 HP

Notes: Drawing inspiration from the MMI Maxima, the MMI Helios is intended as a middle ground between the gestural control surface of the Maxima and the fingertip control of the smaller MMI.

Less density, but a much higher degree of patch control is the key point of the Helios, which complements other MMI devices very well, and can be joined with other Helios (Helii?) to form larger and creative control surfaces.

The design is greatly simplified compared to the original MMI, with only two I/O jacks - either can function as input and output, and their interaction with each other is determined by touching both plates simultaneously to form a connection, or in cooperation with other MMI devices.

Available in a "right" and "left" version - one is an exact mirror image of the other, which makes it suitable for having two units adjacent to one another.

Dimensions: 8 HP

***Please note: the "righthand" version is not included, it is shown in the picture for demonstration purposes only. ***

Notes: Bartender? The power of gate signals at the touch of a button, please - but make mine a narrow one!

You already know what this is: it's a gate signal generator, and it generates gate signals. That's all there is to it. You press the button, the LED indicator lights up, and you get a 5v gate signal! Brilliant!

You get three, in just 2hp! That's 1 1/2 gate signal generators per hp! That's more than [competing product] from [competing brand]! You knew you made a good decision when you decided to look at this product.

All that remains now is to open your heart, and your wallet. Buy this gate generator - this version is the latching model (stays on or off after pressing). In fact, it works really well with the Quad Gate to Trigger Converter, also from Herzlich Labs - now you can generate both gates and triggers with ease! And in such little hp!

Oh, one more thing? Your friends are going to be very envious of this, when you show it off. Gold plated nuts, gold plated front panel, tastefully matte indicator LEDs, pleasantly tactile buttons, black hardware. All the details have received the closest care and attention.

Dimensions: 2 HP

Notes: Bartender? The power of gate signals at the touch of a button, please - but make mine a narrow one!

You already know what this is: it's a gate signal generator, and it generates gate signals. That's all there is to it. You press the button, the LED indicator lights up, and you get a 5v gate signal! Brilliant!

You get three, in just 2hp! That's 1 1/2 gate signal generators per hp! That's more than [competing product] from [competing brand]! You knew you made a good decision when you decided to look at this product.

All that remains now is to open your heart, and your wallet. Buy this gate generator - this is the momentary model (is normally off, and temporarily on when you press it). In fact, this also works really well with the Quad Gate to Trigger Converter, also from Herzlich Labs - now you can generate both gates and triggers with ease! And in such little hp!

Oh, one more thing? Your friends are going to be very envious of this, when you show it off. Gold plated nuts, gold plated front panel, tastefully matte indicator LEDs, pleasantly tactile buttons, black hardware. All the details have received the closest care and attention.

Dimensions: 2 HP

Notes: Two bipolar LEDs allow you to visualize your voltages as they swing between positive and negative, as well as their level of intensity, without affecting the signal you input.

Think of it as a 1D oscilloscope in just 2hp! An easy way to grasp what your patch is currently doing, without sacrificing the money or space on more fully-fledged solutions. Useful as part of a patch to keep track of your oscillations, as a troubleshooting device to quickly verify that something is doing what it should be doing, or simply as a healthy dose of blinkenlights in addition to your existing array of sparkling LED pleasures. Best of all? You get two in just 2hp - you'll have to spend some serious cash to get that kind of function-per-hp density anywhere else!

Dimensions: 2 HP

Notes: Passive Performance Attenuator and Mute with Reversible Front Panel

The mApnea is designed in cooperation with Rakt to create a simple, modular and extensible utility mixing system. The features are numerous and the use cases multitudes, among them:

Apnea-style performance mute for quick and silent muting of both audio and control signals during performance.

Long slide attenuator for fine attenuation control.

Reversible front panel and slide pot: easily flip the orientation of the double-sided front panel, or switch the direction of the slide pot with a microswitch on the back.

Passive design and 2hp width makes integration easy and flexible in any system, even in an auxiliary pod.

Integrates seamlessly with audio interfaces, mixers and other modules: combine them with any module like the Expert Sleepers ES-9 or Herzlich Labs Active Mix to create performance mixers of any size, or use it alone as a performance attenuator or master volume control.

Why bother shopping for one massive performance mixer after the other, when you can simply build the exact solution to match your needs, with Herzlich Labs.

Dimensions
2 HP
9 mm deep

Current Draw
Module does not draw current

Notes: ***B-STOCK: Item refurbished, repaired and in perfect working order.***


The Herzlich 4x4 Switched Passive Matrix Mixer is a fresh dose of hot old school synth flavor right into your signal chain - inspired by the Buchla and Synthi matrix mixers of yore, the Herzlich 4x4 Passive Switched Matrix Mixer will give you all the joys of an old school matrix mixer, and none of the pesky conveniences of a modern one!

Looking for a super clean, powered matrix mixer that will treat your signals with velvet gloves and behave with mind-numbingly boring predictability? Then you've taken a wrong turn, and instead of finding the pristine tedium you sought, you have uncovered a sleeping beast, an uncut diamond the size of a bell pepper and an all-red rainbow all in one. No power needed, and a super slim profile for even the shallowest skiff user.

The Switched Passive Matrix Mixer will set your heart ablaze with its glorious commitment to happy accidents and unapologetic jank. With absolutely no electronics to rein in the monster that resides in its circuitry, you will be delighted and shocked as you turn the knobs and click the switches, to find channels that bleed gently into each other, pots that alter channels other than their own, and switches that may take your desire to open and close them as suggestions rather than commands.

You'll think you've fallen asleep in the pale glow of your DAW and awoken to a nightmare at first, but very soon, you will discover it is a creative dream. Step into the shoes of the composers of yesteryear, and discover how your unintended accidents mixing CV or audio turn into beautiful and unexpected compositions. Find beauty in the strange interconnectedness of the switches and pots, as you try to brave and tame them. Reach synth transcendence with the psychedelic potential of passive matrix mixing, and open your heart to the multitudes of possibilities contained with the power of 70s circuit design.

Dimensions
20 HP
22 mm deep

Current Draw
Module does not draw current

Notes: Let's talk about filters - not your usual, souped up, CV controlled stereo-enabled monstrosity, but just regular old filters for EQ'ing and smaller filtering duties. That's this, right here - but in stereo, with a wide range and with a highly useful slide pot.

What's it useful for? Any task where you'd like to user a filter, but sacrificing an entire filter module might be overkill. Submixing and cutting out the highs of a signal, feedback, amplifying the lows in a bass drum, tone control - there are many reasons you would want a passive low pass filter. Two, even! Either one for your left and right input, or one for two different but linked mono inputs. Neat!

This filter is fully passive, only 2hp and skiff friendly with a very shallow installation depth. It's also particularly good looking in black and gold.