Products of Frequency Central

Hey there synth friends! It’s me, Rick of Frequency Central I founded Frequency Central in 2009, mostly as an excuse to my wife to spend more time messing around with synthesisers. Since that time, I and my small but trusty team of collaborators have endeavoured to crank out a range of fun and exciting Eurorack modules and accessories. By 2015 we’d dipped our toes into MU modular, we are now expanding further into that format. And now in 2024 we're just about to embark on a new adventure - fully standalone synthesisers. But... none of this would be possible without you! We value you deeply in a fraternal way, and we think you are rather special too. It is our honour and duty to design pointless yet fascinating audio tools to exhilarate your senses. Thank you so much for coming here, let’s hang out, turn the volume up to 1.61803399 and make ourselves unpopular with the local cats and dogs...

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Frequency Central - Blades Of Ingenuity

available

A 4 HP combined looping AR generator and triggerable LFO. Blades Of Ingenuity is a simple but surprisingly useful module consisting of two elements.Features:Attack/Release generator• one shot and looping modes• looping mode range 19 Hz to 5 secondsLow Frequency Oscillator• sawtooth/triangle/ramp switch• externally retriggerable• range from 19 Hz to 60 secondsDIY-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.
€68.00*
Frequency Central - Boom

sold out at the moment

Analogue drum voice with a broad range of applications. Boom!! can be used to create bass drums, tom toms, chirps, blips and clicks. The heart of the module is a VCO which is built around one half of a LM13700. The VCO has a HIGH/LOW switch as well as a SWEEP control, which defines it’s response to the onboard envelope.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.
€60.00*
Frequency Central - Cemvelope

sold out at the moment

CEMvelope is based on the legendary ADSR section of the Sequential Circuits Pro-One monosynth, with minor adaptations to integrate it into Euro format. Smooth and snappy!It has a gate input as well as a trigger input, the trigger input works in conjunction with the gate input for multiple triggering from a suitable controller device.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.
€73.00*
Frequency Central - Continuum Phaser 2

available

Allpass VCF. Continuum looks and acts rather like a VCF, in fact that is exactly what a phaser is, an all-pass VCF. There is far more to phasers than just sweeps up and down from an LFO, so Continuum has two CV inputs, so you can use a variety of CV sources simultaneously.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.
€90.00*
Frequency Central - Cosmic Background

available

100% analogue fully modular super flexible drum voice module.Features:•White noise source•Release generator with voltage control•Voltage controlled filter with lowpass and highpass options•Voltage controlled amplifierDIY-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.
€82.00*
Frequency Central - Deep Thought

available

Deep Thought is a Boolean Logic module with two distinct sections each with their own pair of inputs. The upper section features addressable Boolean logic, with any one of NOT A, NOT B, AND, NAND, OR, NOR, XOR and XNOR being chosen either via knob or via CV input.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.
€72.00*
Frequency Central - Dual XVCA

sold out at the moment

Roland 100M based VCAs for Eurorack. Each features two audio inputs, two CV inputs, linear and exponential response switch and Initial Gain control. High output for patching within your modular, Low output for patching to the outside World at line levels. Cool authentic retro sounds! The classic Roland VCA redesigned to use LM13700.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.
€83.00*
Frequency Central - High Towers

sold out at the moment

High Towers is a programmable 4 channel voltage controlled clock divider. It is able to receive external clock and reset pulses. Divides the incoming clock pulses by 1, 2, 4, 8, 16, 32, 64 and 128. Each of High Towers 4 assignable outputs can stream any of these divisions.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.
€100.00*
Frequency Central - Horror Show

available

Horror Show is a 4 HP combined noise generator/digital ring modulator/sub oscillator.Noise generator with filter frequency control. Filter is twin-t type. The noise output is normalised to RM X Input and also to the Sub Osc Input, so that 5 types of noise are simultaneously available, all of which can be further affected by twisting the filter frequency knob.Digital Ring Modulator, comparator based. May also be used as a pulse width modulator by patching in any audio waveform and any controller waveform.Sub oscillator with 3 simultaneous outputs: -1 square, -2 square, -2 pulse. May also be used as a clock divider.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.
€68.00*
Frequency Central - Klang Stadt

sold out at the moment

Klang Stadt is the latest FC iteration of Electric Druid’s VCDO digital wavetable oscillator.Features:• CV’d interpolating waveforms• LFO• CV’d subosc waveforms and octaves, CV’d glide, bitcrushing and more!• Frequency CV input accepts 0-5V control voltages• Quantized to semitones, to cover the MIDI note range 0-63• improved PWM filtering• addition of Sub Two output• addition of Klang output• addition of Xmod feature• onboard LFO for riding the wavesDIY-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.
€100.00*
Frequency Central - Little Melody

sold out at the moment

Generative sequencer based around a clock divider and a chromatic quantiser. Creates in-the-moment licks and riffs. Little Melody is a generative sequencer based around clock divisions and a chromatic quantiser, used to create in-the-moment licks and riffs. It is more that the sum of it’s parts.Little Melody’s internal operations can be considered as 4 clock dividers patched into a CV mixer via attenuators. The attenuators select notes over a 5 octave range, the clock dividers determine how often those notes are added to the mix. The final output of Little Melody is quantized chromatically for fast set up and continuously pleasing results.The 4 clock dividers are labelled A, B, C, and D. They all receive clocks from the same source, the divisions may be selected using the presets and the individual division selectors. The clock dividers can be set to count up, down, or to one of a variety of modes that move between counting up and down.For further information see the Little Melody User Guide.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.
€103.00*
Frequency Central - Logic Bomb

sold out at the moment

Logic Bomb is a Boolean logic module with two independent but identical sections.Both sections feature addressable Boolean logic, with a choice of any one of:• NOT A• NOT B• AND• NAND• OR• XOR• XNORDIY-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.
€65.00*
Frequency Central - Looking Glass

sold out at the moment

Looking Glass is an 5 x 5 active patchbay/matrix mixer/switcher for both audio and control voltages.Features:• 5 inputs (1 through to 5), each with attenuators• 5 inverted outputs (A through to E) which are 180o out of phase with the inputs• 5 normal outputs (A through to E) which are in phase with the inputs• A switch matrix of 25 push on/push off switches and LED status indicatorsDIY-Kit-Type:SMD-Kit-2. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. It includes SMD and through-hole parts! For build guide, more info, videos etc. please check the buttons below.
€76.00*
Frequency Central - Meth Amp

available

Meth Amp is based around the fuzz core of the EH Big Muff pedal. Lovely fuzz and distortion based on the classic Big Muff pedal! It’ll do wooly warm fuzz, subtle tone shaping with a soft saturation/colour, feedback madness and work as a great output VCA (LPG style tones possibly too). The clipping diodes have been replaced by red LEDs to take account of the change in power supply from 9V in the original Big Muff to +/-12V in Meth Amp.To the fuzz core has been added a bunch of OTAs, each controlling a different aspect of audio processing: gain, regen (a new feature - not present in Big Muff), tone and volume. Thereby, each feature is fully voltage controllable.Additionally, there is a separate x100 preamp which can be used to boost external audio for further processing by Meth Amp. Here is a Video about it.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.
€100.00*
Frequency Central - Monograf

available

20 HP hardwired synth voice for fast set up times, with a decidedly East Coast feel.Monograf is a fixed signal path monophonic synth voice with many unique features, including a number of patch points for flexibilty within a modular setting. Our aim was to design the simplest full featured and good sounding single VCO synth within as small a space as possible, while offering a broad sonic palette and fast setup times.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.
€165.00*
Frequency Central - Product

sold out at the moment

Full featured, fully modular synthesiser for Eurorack with a pre-patched normalised signal path for quick setup.A combination of the XVCO TWO, Raging Bull 3.0 VCF/VCA, and System X Envelope, where each section can be used completely individually or as part of the larger whole.Onboard LFO for PWM and FM and Noise Source.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.
€200.00*
Frequency Central - Raging Bull

available

Voltage controlled Filter Moog Taurus. Raging Bull is based on the legendary Moog Taurus Mk I VCF and VCA. It has a lovely, thick Moog-like quality, which is further enhanced by the drive you can get out of its VCA at higher settings.A big part of the sound of the Taurus was the way in which the VCF interfaced with the VCA, so on Raging Bull the VCA is always in the audio path. A toggle switch allows you to select ‘always open’ or CV control of the VCA from CV input 3.By sending an ADSR into CV3, the signal will go to the VCA CV input unattenuated and the VCF CV input via the attenuator 2. By sending a gate into CV3, and setting the attenuator to zero, the VCA can be gated while the gate has no affect on the VCF.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.
€94.00*
Frequency Central - Reset Simulation

only 1 left

Reset Simulation is a Boolean logic module with two inputs, A and B, and 8 simultaneous outputs.NOT A, NOT B, AND, NAND, OR, NOR, XOR and XNOR.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.
€68.00*
Frequency Central - Seismograf BD

available

Versatile Drum module with 8 vintage sounds. Snare Drum variant. Seismograf is a PIC based drum module featuring coding by Jetroid. There is currently a choice of two PICs which may be used with Seismograf, "BD" and "SD". As you might expect, BD contains a range of 8 bass drums, while SD contains a range 8 of snare drums. The drum sounds are 10 bit encodings of some of our favourite electronic kits from yesteryear (see chart below). It is not possible for the user to load their own sounds onto Seismograf PICs, but there is a chance that we may release alternative drum sets as the years roll (!) by.Features:• Sound 1 808• Sound 2 808• Sound 3 909• Sound 4 SDSV• Sound 5 LM1• Sound 6 DMX• Sound 7 CR78• Sound 8 DRUMTRAKSDIY-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.
€68.00*
Frequency Central - Seismograf SD

available

Versatile Drum module with 8 vintage sounds. Base Drum variant. Seismograf is a PIC based drum module featuring coding by Jetroid. There is currently a choice of two PICs which may be used with Seismograf, "BD" and "SD". As you might expect, BD contains a range of 8 bass drums, while SD contains a range 8 of snare drums. The drum sounds are 10 bit encodings of some of our favourite electronic kits from yesteryear (see chart below). It is not possible for the user to load their own sounds onto Seismograf PICs, but there is a chance that we may release alternative drum sets as the years roll (!) by.Features:• Sound 1 808• Sound 2 808• Sound 3 909• Sound 4 SDSV• Sound 5 LM1• Sound 6 DMX• Sound 7 CR78• Sound 8 DM55DIY-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.
€68.00*