Metabolic Devices Intros Moonwalker Phase-Variable Attack/Decay Generator & Papomi

Metabolic Devices has introduced two new modules for Eurorack systems, Moonwalker & Papomi.

Moonwalker is a new 10hp Eurorack format analog attack / decay generator that operates as an envelope, LFO, or audio oscillator, all with 360° continuously variable phase offset.

A 2nd waveform output acts as a reference, so shifting signals in and out of sync with each other easy. The phase offset modes either preserve the range of modulation or bias the output so it always starts from 0, inverting your envelopes or LFO’s without changing their amplitude like normal attenuverters.

The trigger input ignores or responds to retriggers (hard sync), and reactively adapts to frequency range and cycle states. Manual trigger and swap / alternate buttons keep things playful, and half-normalled feedback to the phase offset attenuverter skews the waveform from saw to triangle to ramp without changing the frequency.

Erik Dower, designer of Moonwalker says “One of the most exciting things about Moonwalker, is that you can perform filter sweeps or other modulations without your envelope ever disappearing or going out of range”.

Many function generators have separate attack and decay controls but Moonwalker’s phase offset parameter brings constant modulation transforms so fluid, you will think you’ve been hit by a smooth criminal.

Also new from Metabolic is the Papomi, a panner polarizer mixer module.

Papomi is a new 8hp Eurorack format dc coupled mixer and panner / polarizer from Metabolic Devices that facilitates exploration of feedback structures such as karplus strong. The dc coupled mixer offers a unity gain input, 2 inputs with attenuverters and a dc offset control with electronic detent for easy nulling. The mixer output is half-normalled to the input of a simultaneous panner and polarizer with cv and attenuversion.

“While there are some nice utility mixers on the market, none of them strike the right balance of features for feedback warriors,” says designer Erik Dower. “Papomi has multiple output points that ease setting up feedback networks, a mixer to sum the returns, and voltage controlled routing / amplification to help turn constant drones into expressive note events.”

Pricing and Availability:

Metabolic Devices’ Moonwalker module costs €368, and Papomi is €150. Both new modules are available now.

ADDAC Stand Lets You Customize The Ergonomics Of Your Modular Synthesizer

ADDAC System has introduced Stand, described as ‘a simple but intelligent solution for securely mounting Eurorack frames and other compatible musical hardware.’

The ADDAC Stand is designed to let you control the ergonomics of your system, letting you adjust the angle of your modular synth between 7° and 70° with the turn of a wing nut.

The Stand can be used to customize the angle of your system.

Each ADDAC Stand is comprised of two pairs each, with four pieces each: the main resting piece and three interchangeable pieces that can be swapped for different angle ranges. These interchangeable pieces slide onto the main resting piece, so you can achieve your desired case / equipment angle.

Note: ADDAC suggests letting them know the model and brand of your case or other gear when ordering, so that they can try to ensure compatibility. They say that, if your frame has protruding feet at the bottom, the stand may not work for part of the specified angle range, since at some angles the feet may come into contact with the table.

Pricing and Availability

The ADDAC Stand is sold as a pair and will be shipping in mid-November for €70. See the ADDAC System site for details.

An Introduction To Generative Patching With Modular Synthesizers

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In this video, Eurorack synth designer Eric Schlappi (Schlappi Engineering) takes a look at generative patching techniques for modular synthesizers.

The video was originally created as part of Portland Community College’s Music & Sonic Arts program in Spring 2020.

In the video, Schlappi diswcusses generative patching techniques, including a patch breakdown of synthesist Todd Barton’s Krell Muzak patch, and a generative patch inspired by Rob Hordijk’s Benjolin.

Schlappi notes that, in the video, he discusses Krell is a reference to Fantastic Planet, but that it is actually a reference to Forbidden Planet and its soundtrack by Bebe and Louis Barron.

U-He CVilization Eurorack Module Offers Mixing, Sequencing, Quad Panning & More

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u-he shared this official intro to their upcoming CVilization Eurorack module.

u-he CVilization is a multi-mode utility module for Eurorack modular synthesizers.

It offers four modes:

  • Mode I: 4 x 4 Matrix Mixer
  • Mode II: 4 x 4 Sequential Switch
  • Mode III: Quad Mucorder
  • Mode IV: Quadraphonic Panner

Topics covered:

00:00 – Intro
00:25 – Inputs & Outputs
00:42 – Control Inputs (Gate, Trigger & CV)
00:51 – Mode Selection
00:59 – Rotary Encoders
01:12 – Encoder Features
01:47 – Performance Page
02:13 – Configuration Pages
02:28 – User Presets
02:43 – Firmware Update
02:55 – Closing Remarks

Details on pricing and availability are to come, but u-he says that it will be available ‘soon’.

Modbap Modular Per4mer Effects Processor ‘A Bridge Between Hip-Hop & Eurorack’

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BBoy Tech Report’s Corry Banks has launched a new Eurorack line, Modbap Modular, with the debut of the Per4mer quad performance effects module, a module he says is inspired by beat-maker/DJ performance style.

“Per4mer acts like a bridge between hip-hop and Eurorack,” says Banks. “It brings something fresh to Eurorack.”

“Per4mer will be a great entry point to modular synthesis for the modular-curious beat-maker,” he adds. “Throw it into a small pod and use it as a standalone performance effects unit, or rack it up with other modules to liven things up a bit.”

The basic principle behind Per4mer is that you feed in an audio input and then trigger effects, bringing DJstyle live improvisation to a modular environment. Effects can be triggered simultaneously or individually.

Per4mer features Doppler-style DELAY, REVERB, GLITCH (beat repeat), and TAPE STOP effects, immediately accessible via four translucent mini-arcade buttons. In addition to triggering the effects manually, you can trigger them via four external gate inputs.

Each effect has a set of four effects parameters that can be controlled using the four (FX 1, FX 2, FX 3, and FX 4) rotary knobs or by the four CV (control voltage) inputs.

COMP (compression) with SIDE CHAIN input and COLOR processing effects are also available, along with CLOCK input and TAP tempo options. The external side chain and clock can be connected to interface with other modular and electronic music gear.

Audio Demos:

Pricing and Availability

The Modbap Modular Per4mer is available for pre-order for $399 USD. Intros Queen Of Pentacles Eurorack Percussive Synthesizer

[embedded content] has introduced the Queen of Pentacles,  a 7-voice hybrid drum kit module in Eurorack format.

It’s designed for ‘drums that make you dance’, according to the company.

Here’s what they have to say about it:

“The new Queen of Pentacles covers the range of Dance/EDM/Techno music styles and is inspired by the famous TR-909. did it in a smart way. Check out the features: There are 7 sounds in the drum kit. 3 drums are analogue – bass drum, snare drum and clap. These 3 are generated analogue for the following reason: each sound has its own binary noise generator and really – each time they are triggered the flavor is unique –they simply never repeat. At the same time they don’t phase out each other as in the original 909, which is great – for example in the situation when reinforcing the clap on 2nd and 4th with an additional beat of the snare.”


  • Analogue-based: bass drum, snare drum and clap
  • 4 sample-based drums (e.g. hi-hats, ride and crash cymbal – or simply use your own samples via SD card)
  • Zero-latency sample playback directly from SD card
  • Hybrid analog sound generation: 3x band-limited LSRF binary noise generators with spectrum animation, injected into discrete analog circuits
  • On-board effect processor with 2 banks consisting of 16 effects in total, including additional auxiliary input and firmware update over audio
  • Master isolator-style LP/HP filter with VCA control and saturator booster

Pricing and Availability

The Queen of Pentacles module is available now with a street price of about $650 USD.

Mutable Instruments Updates Veils Quad VCA Eurorack Module

Mutable Instruments has introduced an updated version of their Veils quad VCA Eurorack module.

Veils provides four VCAs with an adjustable response curve and offset control. Veils’ outputs are daisy-chained, allowing adjacent groups of 2, 3, or all 4 channels to be mixed together.

Here’s what’s new with the updated Veils module:

  • More compact footprint (10-HP), with sliders instead of knobs for the main gain/CV control.
  • Gain indicator LED.
  • Positive offset control (0 to 8V) for direct use of bipolar modulation sources.

Pricing and Availability

The updated Mutable Instruments Veils is available now for $199 USD. Intros Running Order 2-Channel Trigger Sequencer

[embedded content] has introduced the Running Order, a two track trigger generator. It’s designed to be used a precise master clock or as a sub-sequencer/divider. It also has a mode for exploring Euclidean Rhythms.


  • 6 HP width, 30 mm depth (with plugged ribbon cable), power requirements: +12V: 30mA, -12V: 10 mA
  • Zero-jitter clock generation: less than 50 microseconds internal clock jitter
  • 101 style 1/16th note input mode (step/rest) with manual or CV controllable amount of triggers repeats when the active trigger step happens
  • Euclidean mode enabled for each tracks where we set Euclidean total steps amount in the circle and then amount of triggers happening in that circle,
  • Separate synchronization (reset) inputs, sync for track 1 is normalled to sync track 2
  • Clock divider for incoming external clock allows to quickly obtain various musical divisions on the fly incl. triplets of course but more importantly tuplets mode allows to stretch desired amount of triggers happening into a single bar
  • Separate mute buttons for each track
  • 8 patterns of triggers sequences stored in the module and recalled on the next power on

Pricing and Availability

The Running Order is available now for $180 USD.

Erica Synth Black Quad VCA2 Now Available

Erica Synths has released the Black Quad VCA2, an update they say brings “added functionality and performance to this useful and versatile Eurorack module”.

The Black Quad VCA2 is a four-channel voltage-controlled amplifier and mixer module for use in complex modular systems.

Each channel has a linear/logarithmic response selector and signal level indicator LED. Also, all outputs are sequentially mixed and CV inputs are normalled to each other, making the module useful in various configurations.

If no CV is applied, the Black Quad VCA2 performs as a signal mixer, and the fourth channel is DC coupled for controlling CV sources as well.


  • Four independent VCAs
  • Selectable lin/log response for each channel
  • Manual CV bias and signal level adjustment
  • Sequential output mixing
  • Signal level indicator LEDs

Pricing and Availability

The Erica Synths Black Quad VCA2 is available now and priced at €200. For more information or to order, please visit the Erica Synths product page.

STG Soundlabs .VCO Lets You Dial In The Wobble

STG Soundlabs has announced the availability of their new .VCO for Eurorack modular synthesizers.

“I am so happy with this module,” notes creator Suit & Tie Guy. “I believe this is the most technologically advanced VCO in modularland and very much look forward to getting these out into the wild.”

The .VCO is an 8HP eurorack analog relaxation core oscillator with sawtooth, triangle, and sub octave square wave outputs, and an integrated drift generator.

.VCO’s tuning system is unique in modular synthesis. There are three controls: Range, Semitone, and Detune. Range and Semitone are stepped controls on potentiometers. Their response is best described with the following graphic:

The Range knob allows you to select whether the .VCO is an audio oscillator or low frequency oscillator. LFO, 32’, 16’, 8’, 4’, and 2’ are ranges most synthesists are familiar with, but the Wide mode allows you to sweep through 5 octaves with the Detune knob.

The Semitone knob sets a positive semitone offset to the oscillator and functions in all ranges. To make common values easier to get to, the root, fifth, and octave all have twice of the rotational degrees allotted to them as the other semitone values.

The Drift Generator could be described as a drunken walk, or perhaps a ‘random wobbulator’. In technical language, it is a random, in rate and peak, bipolar linear function generator with smoothing. Its output is normalized to the modulation input, so it can be easily defeated by plugging a new source into the modulation jack.

Pricing and Availability

The .VCO module is available in limited quantities for $265 USD.