New eurorack oscillator from VERMONA the UniCycle

VERMONA is proud to announce availability of the uniCYCLE voltage controlled oscillator — a six-waveform VCO (Voltage-Controlled Oscillator) module for the popular Eurorack small-format modular system with an outstanding feature set that is all set to help it stand out from the sound of the crowd (to partially paraphrase the early-Eighties British breakthrough hit from synth-pop pioneers The Human League, no strangers to Eurorack today themselves) — as of August 25…

Audio-oscillators are probably the most widespread modules found in Eurorack small-format modular systems today — hardly surprising since they are fundamental for generating synthetic sounds, both tonal as well as percussive. Oscillators, of course, are at the musical heart of VERMONA’s sought-after synthesizers, such as the flagship ’14 ANALOG SYNTHESIZER, so the company clearly knows how to design them. That said, instead of applying a ‘copy and paste’ procedure, it reworked many aspects, adapting its oscillator circuits to Eurorack small-format modular system usage. After all, what works well for closed systems might not necessarily be perfectly suited to modular systems. Such ‘due diligence’ displayed during research and development resulted in the uniCYCLE voltage controlled oscillator, a compact (10 HP-wide), high-performance, and stable oscillator offering all the common features that the discerning Eurorack small-format modular system user might easily expect… and, arguably, much more besides.

Besides classic sawtooth, triangle and square offerings, the uniCYCLE voltage controlled oscillator generates sine, even, and a special sawtooth with doubled frequency for a total of six waveform OUTPUTS. PWM (Pulse Width Modulation) is not only available for that square wave, but also even — a shape that only has even-numbered harmonics — can be transformed into a sine-like wave, while the doubled saw turns into half-pitched triangles. There are also six OUTPUTS, including LIN FM (Linear Frequency Modulation) and EXP FM (Exponential Frequency Modulation) as well as H – SYNC – S (hard and soft sync).

Saving space, one knob allows access to the uniCYCLE voltage controlled oscillator’s frequencies in three different modes. TUNE either controls the low frequency or audio range, respectively adding or subtracting exactly one octave. In this calibrated mode it provides a ‘dead-zone’ around its centre position, making it easy to access all three octaves without needing a centre-click.

Care was taken to make the uniCYCLE voltage controlled oscillator suitable for use in a musical context when VERMONA made its design decisions. Delivering superlative sound quality with rock-solid, stable tuning, the uniCYCLE voltage controlled oscillator obviously fulfils those all-important criteria, handling huge tuning ranges with the greatest of ease while strictly following the 1-volt-per-octave convention.

Clearly, then, the uniCYCLE voltage controlled oscillator makes a strong case for anyone to embrace Eurorack… and at least one such module should be in every Eurorack small-format modular casing!


Shipping now, the uniCYCLE voltage controlled oscillator is available to purchase through VERMONA’s growing global network ors ( with an RRP of €289.00 EUR (Europe) and $339.00 USD (USA).

For more in-depth information, please visit the dedicated uniCYCLE voltage controlled oscillator webpage here:

VERMONA ups Eurorack attenuation ante with flexible four-channel quadroPOL polarizing mixer / ringmodulator

VOGTLAND, GERMANY: electronic sound tools creator VERMONA is proud to announce availability of the quadroPOL polarizing mixer / ringmodulator — a four-channel polarizer module for the popular Eurorack small-format modular system, capable of attenuating any incoming signal, in-phase or out of phase, plus providing additional functionality for further flexibility — as of August 25…

Eurorack has been nicknamed ‘Eurocrack’… and for good reason. It’s certainly addictive! As any enlightened Eurorack small-format modular system user would surely say: you can never have enough modules that influence levels, be that for audio signals or control voltages. VERMONA’s quadroPOL polarizing mixer / ringmodulator helps fill that void — or, indeed, any empty Eurorack rack-space (assuming that potential purchasers have 10 HP to spare in their system) — as a four-channel polarizer module, capable of attenuating any incoming signal, in-phase or out of phase. Putting it ahead of the Eurorack pack, the way that each of those four channels work is one of its most distinguishing features. Fortunately, instead of only having one dedicated zero-point, it has a ‘dead-zone’ where the input signal will be completely suppressed, so users can easily locate the off position — even without a centre-click — while simultaneously being able to create extremely sensitive level increases.

Further flexibility abounds as the quadroPOL polarizing mixer / ringmodulator realises a number of other outstanding features. Firstly, any channel’s OUTPUT signal is optionally forwarded to the next one, allowing the quadroPOL polarizing mixer / ringmodulator to be used as a mixer module, as implied by its full appellation; as such, users can sum up to four signals. Secondly, the quadroPOL polarizing mixer / ringmodulator can also be controlled via control voltages, with each channel boasting a CV IN alongside its INPUT; so, setting the level manually apart, users can also use each channel as a VCA (Voltage-Controlled Amplifier)… and — Eurorack being ‘Eurocrack’ — you can never have enough VCAs in a modular system, now, can you? Yet more functionality comes courtesy of the fact that the quadroPOL polarizing mixer / ringmodulator has one four-quadrant multiplier per channel, allowing the module to also act as a ring modulator without any compromises — in fact, four ring modulators!

Mind the (10 HP-wide) gap. As flexible as it is functional, then, owners of any Eurorack small-format modular system should surely consider adding a quadroPOL polarizing mixer / ringmodulator to their setup. After all, once you’ve got your hands on one, it’s hard to live without it. Indeed, once you’ve got your hands on one, you might need to satisfy your addiction with another!


Shipping now, the quadroPOL polarizing mixer / ringmodulator is available to purchase through VERMONA’s growing global network of dealers ( with an RRP of €269.00 EUR (Europe) and $309.00 USD (USA).

For more in-depth information, please visit the dedicated quadroPOL polarizing mixer / ringmodulator webpage here:

The SynthSummitShow episode 18: John Bowen synth designs

This episode I was fortunate to have John Bowen on the show. A staple in the synthesizer community for roughly 40 years, John has been instrumental in many of the legendary synths of our time. Join us as we walk through a piece of synth history and cap it off with a discussion of his amazing Solaris synthesizer.

for more info check out 

Orange Amplification Launch Their First Dual, Discrete Op-Amp

Orange Amplification Launch Their First 

Dual, Discrete Op-Amp UK RRP £42.00

Orange Amplification has launched the new Dual Discrete Op-Amp which has been specifically designed for audio use. It is one of the most musically sounding of its kind on the market today.

Built to a high specification, the Dual Discrete Op-Amp has been constructed for superior musical audio performance purposes. Unlike existing products, it only contains the gain blocks that are needed to give good clean audio. Each of the individual transistors and resistors are of the highest quality, so the Op-Amp runs as close to pure Class A as possible instead of the class B operation seen in IC Op-Amps. It has been designed to be 8 pin DIP compatible, and comes with a socket, so is easy to drop in and replace. The DC offset of Orange’s Op-Amp is low, which means they can be used almost anywhere, even active filters.

We wanted to design something purely for audio’, explains Adrian Emsley, Orange Amplification’s Technical Director, ‘Many Op-Amps perform well on paper but the trouble is the human ear does not hear quite the same way as test equipment. To me, this Op-Amp sounds more musical, more natural, with the transient sound feeling more real and less synthetic.’

To find out more about the Orange Op-Amp and its full specifications please go to  ” and to see Adrian Emsley talking about the new Op-Amp check out this video here

Zeta Ohm Fluxus 1 (FLXS1) sequencer goes live on Kickstarter!

The Fluxus one Sequencer from Zeta Ohm

* Breaking news, ZetaOhm have ALREADY reached the goal and are not even halfway through the campaign!*

Recently at Knobcon 2016 I was very lucky to meet an enterprising young man by the name Tenkai. Not only did he save the day (I had a catastrophic computer failure) but he debuted an amazing new eurorack modular sequencer he was working on. Continue reading

Hex Inverter Mutant Rim shot, ZNO, Red Dragon Eurorack modules at NAMM ’17

Hex Inverter the mind behind the Mutant Drums series of Eurorack Modules returns to NAMM 2017 with a new filter, Rim shot and wild noise source oscillator. Winston from Balcones Whiskey steps in to assist with this coverage so big thanks to Winston and the crew at Balcones whiskey.

New Synthesizer Modules from Hex inverter at Namm 2017!

Pittsburgh Modular Double Helix VCO and new Lifeforms modules NAMM ’17


Designed to be the nucleus of a synthesizer, the Double Helix Oscillator is a modular waveform generator like no other. A set of beefy, analog oscillators paired with voltage controlled shape contouring, deep modulation and a performance-ready voltage controlled modulation matrix create a dynamic, analog waveform playground.

At the core of the Double Helix are two, wide-range precision oscillators. The primary oscillator includes a full complement of waveforms and multiple modulation options. The secondary oscillator offers a more focused set of waves and frequency modulation. Both oscillators reach deep into LFO range and can be used as voltage-controlled modulation sources.

The contour section of the Double Helix Oscillator features a highly tuned wavefolder paired with an exclusive dynamic impulse low pass gate. The contour signal chain starts with a two-channel mixer. This allows multiple waveforms or multiple oscillators to be combined before passing though the contour section. The first half of the contour section is a voltage-controlled, 6-stage wavefolder used to add odd harmonics to the incoming waveform. The timbre and timbre CV controls set the density and amplitude of the folds. When processing a sine wave, the wavefolder creates a spectral change from zero harmonics to square, with an infinite harmonic series.

The second half of the contour section is a dynamic impulse low pass gate. The effect of the low pass gate is similar to pairing a low pass filter and VCA together. As the dynamics control is opened, the filter adds harmonics and the VCA increases the amplitude of the waveform. As the dynamics control is closed, the filter removes harmonics and the VCA decreases the amplitude of the waveform. This pairing mimics how sound behaves in the real world creating a more naturally tonal response. The impulse input adds the ability to strike or ping the low pass gate circuit creating a very organic, percussive sound. The decay time of the impulse input is set by the dynamics response control allowing the strike to be tuned to a specific musical context.

The modulation section includes an LFO offering simultaneous sine, square, and random waveforms. A noise source is also available for audio or modulation use.

A pair of voltage-controlled routers manage all the CV inputs creating a dual, voltage controlled modulation matrix perfect for complex signal paths, experimentation, and live performance. The matrix consists of two voltage-controlled amplifiers designed to control the modulation amount inputs that can be routed to any of the Double Helix CV inputs. Each of the CV inputs can be switched to channel a, bypass, or channel b and mixed with a dedicated CV input.


  • Panel size: 28hp
  • Depth: 37mm
  • Power Usage: +12v 223mA, -12v 205mA
  • Does not require +5v