Modular
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Fixed voltage sources are not a new idea in modular, but we hope that Turn! Turn! brings a new twist to the concept. Turn! Turn! features two independent fixed voltage sources with a useful range of features.Turn! Turn! grew out of a conversation with Steve Levine – when a producer of such note makes a suggestion you have to listen – and act on it. Steve suggested that it would be useful to have a fixed voltage source under the control of a big knob, and the ability to go from as little as 1V over the entire range of the knob. Hence subtle, incremental changes are possible.The final feature set includes a voltage selection switch as well as a unipolar/bipolar switch. Both normal and inverted outputs are included. The following ranges are available from Turn! Turn! depending on switch positions:• 0V to 1V• 0V to 2.5V• 0V to 5V• -1V to 1V• -2.5V to 2.5V• -5V to 5VDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Ultra Wave is a fully expanded version of the Wave Runner LFO. It’s a multi-waveform sync-able LFO based on the Electric Druid TAPLFO2D family of code, but with some significant additions and improvements. The WAVERUNNER 1 PIC and code is exclusive to Frequency Central and was developed specifically for the Wave Runner/Ultra Wave, and is not compatible with similar modules.Ultra Wave has both manual and CV control of frequency, clock multiple, waveform and wave distortion. Additionally there’s sync input and output level CV input. Two outputs, LFO and clock.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Wave Runner is a multi-waveform sync-able LFO based on the Electric Druid TAPLFO2D family of code, but with some significant additions and improvements. The TAPLFO2D-FC PIC and code is exclusive to Frequency Central and was developed specifically for the Wave Runner, and is not compatible with similar modules.All waveforms can be skewed using the Distort knob, as well as control over pulse width of square, and distortion of the cyclic waveforms, this get you control over Noise freq as well as bitcrushing, bitcrush of S/H down to 1 bit for random triggers. Tap sync input, for syncing to whatever. Wave Runner measures the last two incoming pulses and syncs itself to these. Multiply knob allows for Wave Runner to run at x0.5, x1, x1.5, x2, x3 and x4 of the incoming sync pulse. Freq is from stupid slow (0.025Hz) into low audio range (50Hz). The latest version also features Level CV input to control the absolute output level of the LFO.Features:8 Waveforms available• sawtooth• ramp• pulse• triangle• sine• noise• sample and hold• stepped triangle / sawtooth / rampDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Whiteface is based on the legendary ARP4023 VCF module often found in the “whiteface” ARP Odyssey Mk1. I’ve engineered out the rare parts and the need for matched transistors for the CV input section by using a Roland-inspired circuit there instead, no change to the vibe though!The audio path remains pure ARP, with one exception – built as specified on the schematic, the resonance would clip in a way which is neither musical or desirable when set too high. I’ve come across a couple of other versions which have this ‘don’t turn it up past 8’ trait, but I went further and engineered that out – a single resistor value change. In Whiteface, the resonance is usable and musical over the entire range!DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Wonderland is an 8×8 active patchbay/matrix mixer/switcher for both audio and control voltages.Any of the 8 inputs can be patched to any of the 8 outputs simply by pressing the corresponding switches. A patched signal will appear at both normal and inverted outputs simultaneously.A single input can be patched to a single output. A single input can be patched to multiple outputs. Multiple inputs can be patched to a single output. Multiple inputs can be patched to multiple outputs.Each input features a micro-attenuator which can be set with a small screwdriver. This space saving feature allows you to reduce the volume of an incoming signal without having to resort to external attenuators. If you add many inputs to one output you will of course cause clipping (which may or may not be desirable!), the micro-attenuators are your on-board way around this. I find it useful to leave the micro-attenuators set to 50% (which is how they come pre-set at delivery). Of course, their size is a little bit of a compromise, but they are a useful feature nonetheless. Wonderland’s sister module Looking Glass includes full size input attenuators as well as LED status indicators.Features:• 8 inputs (1 through to 8), each with micro-attenuators (which can be set with a small screwdriver)• 8 buffered inverted outputs (A through to H) which are 180o out of phase with the inputs• 8 buffered normal outputs (A through to H) which are in phase with the inputs• A switch matrix of 64 push on/push off switchesDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Roland System 100M based VCF for Eurorack. Way back in the mists of time, I acquired a Roland System 100m, my first modular system. I’d used Roland synths of that era before, and what always stood out was the clarity and precision of the filters, clean and squelchy with searing resonance. My 100m boasted 3 filters, and had these qualities in spades. When I started out into Eurorack, it was this sound that I craved, but there was nothing quite like it available in the format, so I made my own. Soon, folks started knocking, asking me to build a Roland style filter module for them too. So, System X Filter was born, adding a 12dB output in addition to the regular 24dB output. This module has adapted and changed over the time we have been producing it, now renamed XCF TWO to sit alongside our XVCO TWO. I like to feel that the current version is the best of the lot!DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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XVCO TWO is essentially the Roland 100M VCO adapted to Euro. There are individual outputs for ramp, square and triangle - an improvement on the original. The six position rotary switch for octaves gives the oscillator plenty of range, with a pitch control to fine tune. An internal LFO (thanks MC202) can be used to introduce FM and/or PWM. Super!We’ve spent a lot of time tweaking the levels of the waveforms relative to 0V to take into account Euro’s +/-12V supply (instead of the 100M’s +/-15V supply). Care has been taken to set XVCO TWO so that it needs only minimal tweaking of the trimmers for scaling. It’s easy to set up without recourse to ‘scopes, frequency counters, and precision reference oscillators! Accurate up to 7 octave too!DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The EZSQ is a simple 8 step sequencer featuring a clock input, reset input and pitch output. It was designed to sit next to the VCSQ2 to give it even more power, but 8 steps sequencers are useful anywhere in all modular cases.Features:• 8 steps• Clock input• Reset input• CV outputDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Magma is a 10 HP Eurorack compressor with novel circuitry and a classic sound.The Magma uses feedforward diode-bridge compression which gives it a unique character. The Magma excels in providing punch, and can pump hard when set to extreme settings.The interface is easy to control and designed for live performance – it’s easy to change the entire groove with just a few controls. The glass orb lights up like hot lava and visualizes the amount of compression being applied.Sculpt your sound in even more detail with the cv and audio side chain inputs. The Magma aims to make compression both creative and fun!DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Mic from Ginko Synthese is a 2HP Eurorack microphone pre-amp module. It was designed to work with Ginko Sampleslicer but can also be used to amplify and send your microphone signal to any other module in your Eurorack system.It works with electret mics (included).Features:• Input• Gain control• Momentary on push button• On/off switch• Output• Included mini jack microphoneDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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Directly insert your record player into your eurorack setup. The phono amp stage is equiped with RIAA equalization. The module is build with high quality, low-noise opamps and the famous WIMA caps.Features:• gold-plated RCA inputs• PHONO/LINE select• RIAA equalization• GND connection• MONO and STEREO output on modular levelDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The SEEDS is a complex powerful 8 bit oscillator and can be used as a complete synthvoice.On the sound-design side you might notice some 90's popular music influences. There are two reasons for that. First of all; those sounds are a natural match for the rather modest (8 bit, 16MHz) Atmel chip on the Arduino Nano we're using. That music was made using digital synthesizers using the processors available at the time, and those had to make the most of the chips available at the time, which were quite comparable to the Nano. The second reason is that those sounds are a lot of fun. Once that link became clear it became more a of a guiding principle than a potential problem; it seems more sensible to lean into such links than it is to resist them.The Arduino in the SEEDS kit is already programmed, but in case you need to re-install the firmware you need the Arduino IDE installed on your computer and install the CH340 driver to communicate with the Arduino Nano. The latest Arduino IDE can be downloaded from the Arduino website: https://www.arduino.cc/en/main/software The CH340 driver can be found here: https://sparks.gogo.co.nz/ch340.htmlThe firmware will be updated regularly so you might want to keep an eye on it to get fresh sounds in your SEEDS every now and than.Features:• The original “Grains” sound. Two triangle-wave formant peaks synced by the main oscillator. The “mod” knob sets a formant peak.• Triangle wave with wave-wrapping. The “mod” knob sets the amount of wave-wrapping.• Super-saw, featuring three detuned saw waves with a PWM feature modulated by an LFO.The “Mod” knob controls the LFO rate.• Classic FM; a “carrier” sine wave phase modulated by a second sine. The “mod” knob sets the modulator wave’s pitch offset.• Saw-wave with hard-sync.• Phase-distortion• Tuned noise• Square wave with pulse-width modulation and built in LFO. The “mod” knob controls the LFO rate.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Legs is an analog kick and percussion synthesizer module in eurorack format.It is based around a triangle core voltage controlled oscillator and a two levels voltage controlled saturation stage.Each parameter has its own dedicated CV input, when a control signal is patched into any of the inputs its corresponding knob will act as a CV attenuator.Two independent gate/trigger input with level control can be used to create accents, pattern changes and generally work on track dynamic.Features:• Triangle core VCO• Two-stage voltage controlled saturation• Two separate gate/trigger inputs• CV control over every parameterDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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Liquid Foam is a modular monophonic analog groovebox that revolves around a dual sequencer designed to encourage complex pattern exploration. At the core there’s an analog VCO with two stages of waveshaping, a decay-only EG that can be inverted any step and a 2-pole resonant VCF.Features:• Two sequencers• Newly designed filter and wave mixer• Separate trig and envelope output• Newly added bandpass filter outputDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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This is the DIY version of this unit.Pathways is a modular matrix mixer designed for feedback manipulation, creative routing, weird synthesis… and many other things.Based around sixteen analog VCAs it can be the central hub of many different setups and a bridge between desktop gear and eurorack systems.Features:• 4x 1/4″ inputs with gain / drive control, 4x 1/4″ outputs• Each of the 16 matrix intersections can be controlled manually or via CV, a dedicated LED gives visual feedback of the channel volume• An envelope follower is normalled to input four, the signal then gets fed through a clock divider with three cascaded outputs. Willingly, an external signal can be inserted into the divider• Two voltage controlled LFOs can modulate any parameter and create dynamic feedbacks, asymmetrical panning, tempo-related fx send/returns• If patched into itself, each channel can self oscillate so it can be used as a polyphonic cv-controllable drone synthesizer• full eurorack compatibility, each parameter has its own 1/8″ input jackDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled unit. The kit includes all parts to build the unit. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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This is the DIY version of this unit.Solid Felt is a stereo multimode analog filter in desktop format.Its name comes from the etymology of the words “stereo” and “filter”.From subtle timbral variation to an all-encompassing sonic treatment, Solid Felt can be used in multiple ways to embellish or vandalize your sound bouquet:As two independent mono filtersto give a stereo treatment to a mono signalto filter a stereo signal at the same cutoff frequency on the L and R channelsAs a mono 24dB/oct filter (placing the two filters in series)To synthesize sounds, via external feedback patchingTo extrapolate a CV signal from your audio input and use it to control any of its parameter or external gearAs a stereo overdrive effectTo bring line level signals to Eurorack levelFeatures:• 2x Analog multimode analog filters• 2x 1/4″ jack high impedance inputs• 2x 1/4″ jack low impedance outputs• 8x 1/8″ jack eurorack compatible CV inputs• 8x 1/8″ jack eurorack compatible CV outputs• Input gain control to amplify incoming signals up to fuzzy territory• mode control to select between lowpass, bandpass and highpass filter response (CV controllable)• an envelope follower (normalled to input A) which is fed into a three stage clock divider• a voltage controlled LFO with waveform blend control and two outputs 180° out of phase• a voltage controlled LFO with rising and falling sawtooth outputsDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled unit. The kit includes all parts to build the unit. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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Tongues is a passive Eurorack bidirectional format converter that permits to send and receive signals between banana jack synthesizers and Eurorack modules.Features:• Negative voltage protection switch on every channel• BidirectionalDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
sold out at the moment
I know what you want: you want to make something go silent, fast.You want nice, tactile clicky goodness. You want half the size, half the price and exactly as much utility - and buddy, you've found it.Introducing the Apnea 3, 3 mutes that'll make your patch go dead quiet in the click of a button. No funky clicks, no weirdness, just a kill switch that kills your incoming CV or audio signal, ready to be revived with another click of the button - and did I mention it's 2hp? Did I mention it's passive and draws no power? Did I mention it's skiff friendly? Did I mention it's really nice and also good?Finally, the unit is designed to be turned either way, for maximum ergonomic pleasure and utility. You can even choose yourself whether pushing the buttons down will mute or unmute. Neat!Also an excellent gift for the unskilled modular musician who insists on not using headphones.Features:• Quick, simple and customizable build.• Very high utility-per-hp factor and no power requirements.• Works well with both CV and audio signals.• Nice tactile buttons without actuation noise bleeding into your signals!DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The Omen is a dual LPG with a bit more than you might be used to. Like you, I once was lost in the world of low pass gates, seeking something more, something bigger and somehow juicier. The inspiration came to me as I was reading a particularly heavy book on passive filters, and I realized 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.DIY enthusiast? Rejoice! The Omen is available as a fully loaded DIY kit - everything you need to build your very own Omen packed in one place, so you can easily build one in the comfort of your own home. It is not a difficult DIY project, an ambitious beginner or someone with experience from a few easy builds can tackle the Omen in an afternoon. The build is all through-hole aside from three SMD components, which are easily soldered by hand due to their large size.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 - add some analog warmth to your signals, today.Features:• Functions both as two discrete LPGs or as one multi-pole filter LPG• A passive LPG without the characteristic signal bleed or input loss• You read that right: each LPG contains a resonant two-pole filter• Comprehensive build guide, complete with picturesDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Herzlich Labs - R2R Ladder 8-bit DAC. It's a passive R2R ladder circuit, which will do all kinds of neat things in your system. Use it as an 8-Bit Digital to Analog Converter, punch in a bunch of digital signals in every numbered input, and from the output you shall find a delightful analog signal.Or why not use it as a weird, passive weighted mixer? A fixed-setting attenuator? Why not plug in a bunch of stuff and just see where it takes you? I promise it's safe, thanks to the brilliant design and architecture of the Herzlich R2R.In delightful 3 HP to fill that space left by another odd-sized module.Features:• Passive 8-bit DAC• Use it as a mixer, fixed attenuator or a number of other things• Flexibly use anything as input or outputDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.