LFO stands for low frequency oscillator. Oscillators are one of the most important basic building blocks of synthesizers, because most of the time they are generating the sounds that you hear. Oscillators repeatedly fluctuate back and forth between positive and negative voltages, meaning that they are bipolar signals. These fluctuations are called cycles, and the size of fluctuation is referred to as amplitude. The rate or speed of these cycles is called the frequency, which is measured in Hertz, or cycles per second. If the frequency is fast enough, above 20 Hz, it becomes audible to the human ear. Low frequency oscillators generally inhabit the subsonic range below what humans are able to hear, but most can be sped up enough to be audible.
LFOs are commonly used as sources of modulation in a Eurorack synthesizer to make a parameter rise and fall. For example you can use it to control the pitch of an oscillator, the cutoff point of a filter, or the amplitude of a sound.
This brings up an important fact that is a big part of what makes modular synths so exciting. Audio can be used as a control source and some CV can be audible. A big part of what makes a Eurorack system fun is experimenting with connecting things and discovering what happens. Just be sure you’re connecting outputs to inputs and inputs to outputs!
- Thorn.audio - VC LFO
Thorn.audio - VC LFO
Fully voltage controllable Eurorack format, externally syncable, 16 waveform low frequency oscillator with built-in VCA and sample & hold.
Powered by a socketed VCLFO10 IC from Electric Druid.Suitable for…€ 199,00
Boxless!Doepfer A-141-2 Voltage Controlled Envelope Generator VCADSR / VCLFO
Module A-141-2 is the successor of the obsolete former VCADSR module A-141. Compared to the A-141 a lot of improvements and expansions have been added:
common control voltage input for all time parameters (A/D/R), range switch for…€ 155,00
- MALEKKO – AD/LFO
MALEKKO – AD/LFO6-CHANNEL ENVELOPE AND LFO GENERATORThe AD/LFO is a digital powerhouse of envelopes and low frequency oscillators, totaling 6 independent function generators plus 2 SUM outputs. Each bank of three can be 10 times…€ 249,00
- Doepfer A-143-1 Complex Envelope Generator / Quad AD-Generator / Quad LFO
Overview: Module A-143-1 is a complex envelope generator that consists of Attack/Decay generators. For the complex envelope generator the four units are daisy-chained, i.e. the preceeding unit triggers the following unit. The four…€ 230,00
- Doepfer A-143-3 Quad LFO
Module A-143-3 is a low-cost four-fold modulation oscillator, often called LFO (low frequency oscillator). Like the other modules of the A-143 series (A-143-1 and A-143-2) not a very "exciting" module, just a bread-and-butter…€ 160,00
- Doepfer A-143-4 Quad VCLFO/VCO
Module A-143-4 is a fourfold voltage controlled low frequency oscillator (LFO). As the frequency range includes moderate audio frequencies it can be used as a four-fold VCO too.
∙ four independent VCLFOs/VCOs with triangle…€ 280,00
- Doepfer A-143-9 Voltage Controlled Quadrature LFO/VCO
Module A-143-9 is a derivative of our planned thru-zero quadrature VCO. It is a voltage controlled sine LFO with 4 outputs. The phase shift between the outputs is 90 degrees. The sine shifted by 90 degrees is also called cosine,…€ 95,00
- Doepfer A-145 Low Frequency Oscillator LFO
Module A-145 is a low frequency oscillator, which produces cyclical control voltages in a very wide range of frequencies. Five waveforms are available: sawtooth, inverted sawtooth, triangle, sine and square wave.
The LFO can be…€ 75,00
Boxless!Doepfer A-146 Low Frequency Oscillator 2 / LFO 2
Module A-146 (LFO 2) is a Low Frequency Oscillator, which produces periodic control voltages over a wide range of frequencies.
The LFO can be used as a modulation source for a series of modules (for instance pulse width and/or…€ 65,00
DiscontinuedDoepfer A-147 Voltage Controlled Low Frequency Oscillator VCLFO
while stock last. (discontinued)
Module A-147 (VCLFO) is a voltage controlled low frequency oscillator, which can produce cyclical control voltages over a frequency range of about 50Hz to 1 minute periode time (i.e. about 0.015…€ 85,00
- Doepfer A-147-2 VCD LFO
Doepfer A-147-2 Voltage Controlled Delayed Low Frequency Oscillator / VCDLFO
Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of these sub-units:
- Intellijel Atlantis
ATLANTIS DUAL OSCILLATOR SUBTRACTIVE SYNTH VOICEThe Atlantis is heavily inspired by the architecture and sound of the classic Roland SH-101. It has always been one of our favorite synths and we really liked how the seemingly…€ 749,00
- Intellijel Dr. Octature II (VCO/LFO)
INTELLIJEL DR. OCTATURE II (VCO/LFO)4-POLE LOW PASS FILTER AND OCTATURE SINE WAVE VCO/LFOJust like the original Dr. Octature the basis of the module is a 4-pole lpf inspired by the classic “cascaded ota” design, but realized…€ 249,00
- Intellijel Rubicon (thru zero fm triangle core vco)
INTELLIJEL RUBICON THRU ZERO FM TRIANGLE CORE VCORubicon main rev 008
Not long after the David Dixon finished the Dixie design he began working on a totally novel approach to implementing tzfm (thru zero frequency modulation).…€ 349,00
- Make Noise DPO
Make Noise DPO
A dual Voltage Controlled Oscillator designed for generating complex waveforms. Expanding on the classic arrangement of Primary and Modulator Oscillators, the DPO has both of the VCOs operable as complex signal…€ 675,00
- Make Noise Function
Make Noise Function
FUNCTION is part of the MATHS family of control voltage utility modules. It is a small analog computer designed for solely musical purposes.
∙ Generate a variety of linear, logarithmic, or exponential…€ 169,00
- Make Noise MATHS
Make Noise MATHS
MATHS is an analog computer designed for musical purposes. Amongst other things, it will allow you to:
∙ Generate a variety of linear, logarithmic, or exponential triggered or continuous functions
DiscontinuedMutable Instruments Peaks (EOL)
Mutable Instruments Peaks (EOL)
OverviewPeaks provides 4 different functions in a small 8-HP package. Their common point? They are all about generating an audio or CV signal in response to a trigger, and are all focused on…€ 179,00
- Mutable Instruments Tides (2)
Mutable Instruments Tides (2) New (2018) versionTides got a little refresh. New quad output modes, hardware matching the most recent releases. (Sept 2018)
Tidal modulatorOverviewTides is all about waves that go up and down, from…€ 229,00
- Verbos Electronics - Voltage Multistage
Verbos Electronics - Voltage Multistage
In theory, a sophisticated enough control voltage source can replace all of the control voltage sources in a modular system. That includes saw, square, pulse, triangle LFOs, AR, AD, ADSR,…€ 629,00
Boxless!Doepfer A-147-2V (vintage black edition)
Doepfer A-147-2V (vintage black edition) Voltage Controlled Delayed Low Frequency Oscillator / VCDLFO
Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of…€ 140,00
- 2hp - LFO (LFO with morphable waveforms)
2hp - LFO (LFO with morphable waveforms)
Low frequency oscillator with smooth morphing between sine, triangle, sawtooth, and square waveforms. Four alternative waveforms accessible including stepped triangle, FM sine, ramp, and…€ 159,00
- Flame Quad CV Recorder
Flame Quad CV Recorder
Four-channel recorder/looper for recording and playing back control voltages or potentiometer movements in a very wide frequency range, from very slow to fast. The output is a smoothed voltage without…€ 409,00
- Rossum electro-music - Control Forge
Rossum electro-music - Control Forge
Programmable Universal CV Generator
CONTROL FORGE’s core functionality is drawn from the E-mu Morpheus’s insanely powerful (but hard to program on a two-line display) Function Generators.…€ 599,00
- Rossum electro-music - Satellite
Rossum electro-music - Satellite
Universal CV GeneratorSatellite is a compact 12HP module that can be loaded with all (or a subset) of the presets and preset sequences from a Rossum Electro-Music Control Forge or other Satellite…€ 399,00
- 2hp - LFO Black (LFO with morphable waveforms)
2hp - LFO Black (LFO with morphable waveforms)
Low frequency oscillator with smooth morphing between sine, triangle, sawtooth, and square waveforms. Four alternative waveforms accessible including stepped triangle, FM sine, ramp,…€ 159,00
- ReBach - Catch LFO
∙ Eurorack Low Frequentie Oscillator.
∙ Modulatable Tri and Pulse wave.
∙ Two oscillators (Second oscillator modulates the first).
∙ plm 0.2hz to 25hz
∙ Size: HP6 (W30mm H128.5mm D26mm).
∙ +12V 8mA / -12V 7mA€ 65,00
- Doepfer A-145-4 Micro LFO
DOEPFER A-145-4 MICRO LFOModule A-145-4 is a simple quad LFO (Low Frequency Oscillator). Not a very "exciting" module, just a bread-and-butter device and a simple demon for work. Virtually in every modular system several LFOs are…€ 85,00
- Doepfer A-145-4 Micro LFO Vintage Edition
DOEPFER A-145-4 MICRO LFO VINTAGE EDITIONModule A-145-4 is a simple quad LFO (Low Frequency Oscillator). Not a very "exciting" module, just a bread-and-butter device and a simple demon for work. Virtually in every modular system…€ 95,00
- Eowave Weather Drones
Eowave Weather Drones
The Weather Drones is an all in one drone voice for eurorack modular.
It features a triangle based digital oscillator and a lowpass filter. Furthermore it offers three modulation sources: LFO with square…€ 199,00
- Klavis Twin Waves MKII
Klavis Twin Waves MKII
Voltage-controlled Dual VCO/LFO/random
Two oscillators independently set as VCO, LFO, or random generator
Features in VCO mode:
V/Oct tracking over 10 octaves
Through zero and linear FM
- Buchla & Tiptop Audio 281t - Quad Function Generator
Buchla & Tiptop Audio 281t - Quad Function Generator
The 281t Quad Function Generator comprises four function generators organized in two pairs. All four generators can operate independently or can be linked in pairs to generate…€ 259,00