Introducing the Dave Smith Instruments Pro 2

Published on Jun 19, 2014 Dave Smith Instruments·26 videos

Update: DSI eurorack filter module at 5:00. Also note the multiple 1/8" CV Ins & Outs on the back of the Pro 2.  Some conversation on The MATRIXSYNTH Lounge.

"Special thanks to Peter Dyer (http://peterdyer.net).

One Voice to Rule Them All
Dave Smith calls the Pro 2 his "most powerful mono synth ever." It shares the same exceptional ergonomics and playability as its 12-voice sibling, the Prophet 12, but carves out distinctly different sonic territory with an all-new dual analog filter architecture, a monster step sequencer, superwaves, digital bucket-brigade delay, and a lot more. Nothing else sounds like it and nothing else performs like it. The Pro 2 raises the bar for mono synths and redefines the word "fat."

Full info and specs: http://www.davesmithinstruments.com/p..."

"One Voice to Rule Them All
Dave Smith calls the Pro 2 his 'most powerful mono synth ever.' It shares the same exceptional ergonomics and playability as its 12-voice sibling, the Prophet 12, but carves out distinctly different sonic territory with an all-new dual analog filter architecture, a monster step sequencer, superwaves, digital bucket-brigade delay, and a lot more. Nothing else sounds like it and nothing else performs like it. The Pro 2 raises the bar for mono synths and redefines the word 'fat.'

A New Classic for a New Generation
The Pro 2 is a fusion of classic analog synthesizer design and cutting-edge digital technology. It boasts four high-resolution digital oscillators, plus a sub oscillator. The oscillators produce both classic and complex wave shapes and can frequency and amplitude modulate each other in any operator and modulator configurations you choose for harmonically-rich FM and AM sounds. A set of Character controls adds high and low frequency boost, bit and sample rate reduction, and tape saturation emulation to the Pro 2's sonic palette.

Two New Filters Based On Vintage Designs
At the heart of the Pro 2's gutsy sound is its all-new dual filter design. Filter 1 is a 4-pole low-pass design inspired by the original Prophet-5 filter. Filter 2 is a state-variable design inspired by the Oberheim SEM and can be continuously varied between low-pass, notch, and high-pass operation, with an optional band-pass mode. The two filters function in either serial or parallel, or anywhere in between. Two of the four oscillators can be routed through Filter 1 with the other two routed through Filter 2 for a broad range of tonal possibilities.

Advanced Sequencing
One of the most exciting features of the Pro 2 is its sequencer—possibly the most powerful step sequencer ever designed for a synth. With up to 32 steps and 16 tracks, it provides real-time input, rests, and variable-length sequences. It also syncs to MIDI clock and external audio input. Sequence tracks can control any parameter in the Pro 2's extensive modulation matrix.

Plays Well With Modulars
The Pro 2's flexible architecture opens the door to not only processing external audio, but also to interfacing with modular synths through its 4 rear-panel control voltage inputs and outputs and a dedicated gate output. Control voltages can be assigned and routed from within the modulation matrix and can run at audio rates for extreme modulation effects. Some of the many parameters that can be sent to the CV outputs include oscillators, LFOs, envelopes, and sequencer tracks, making the Pro 2 a natural choice for the center of your studio or live setup.

Delays, Envelopes, LFOs, Arpeggiator, and a Multitude of Modulation
The Pro 2's delay section provides three digital delays with pan, and high-pass and low-pass filtering controls. A fourth delay is a digital bucket-brigade delay (BBD) for analog-style effects. There are four loopable five-stage envelope generators, four syncable LFOs with slew and phase offset, a full-featured arpeggiator, and a sixteen slot modulation matrix with dozens of modulation sources and destinations.

Monophonic by Design, Paraphonic by Choice
The Pro 2 was designed primarily as a super-powerful monosynth, but it’s also a true, four-voice paraphonic synth that allows you to control each of its four oscillators individually with their own envelope. This makes playing four-note chords not only possible, but very expressive.

Package all of this power in a three-and-a-half octave, semi-weighted keyboard with velocity and channel aftertouch, add two backlit pitch and mod wheels and two location and pressure sensitive touch sliders, and you've got one of the most feature-rich, awe-inspiring synthesizers ever created."

Specs:

CLICK FOR MORE »

Introducing Swizzle Circuits

You can find them at https://reverb.com/shop/swizzle-circuits

Playlist:
Big Boom Demo
Swizzle Circuits Tripple Attenuator Module Demo
Swizzle Circuits Opto Gate Demo - EuroRack Module

Big Boom

We went back to basics again with our twin Op-Amp designed circuit. Tuning knob will take you anywhere from deep Kick to high Tom sounds. The Decay adjustment will get you from a quick hit to a self-resonating bass drone. A ..::boom::.. button lets you preview the sound or play by finger. Gate In is sensitive enough for most triggers and a LED indicator lets you see when it booms.

Powered - 6hp (30mm)

You get exactly that... a Big Boom. You might need to become better friends with your neighbors after you install a Big Boom or 2 in your rack. Turn down the Tuning and Decay adjustments and just let it rumble. Then again its not hard to tame this beast..Tuning and Decay in the mid range makes a very recognizable and amicable kick drum sound that will drive any melody into something that will make you want to move your body. Manual trigger button on the face lets you play by finger to add just the right low end push to your creation.

Just like every Swizzle Circuits module, it comes fully assembled, tested and ready to go. Just take it out of the package and plug it in.


Big Boom EuroRack Module features:

includes power cable.
Install more than one for multiple drum sounds.
LED indicator shines through the face to let you see the action.
Decay adjustment goes into a self-generating bass drone with wave re-triggering for rhythmic stuff.
..::boom::.. button allows you to manually trigger the Big Boom for preview or free play.
Gate In is tuned to accept most CV gate triggers, sequencers and LFO signals.
Swizzle Circuits custom designed PCB

Tripple Attenuator

Some of the most basic modules always turn out to be the most useful! At 8hp, this module is small enough to fit anywhere, but big enough to give you full precise control. Grab all three at the same time during a big break! The LED indicator lets you know that your signal is staged right where you want it and ready to be used. Attenuation works just as well to tame unruly LFO, envelope and other CV signals. Just like every Swizzle Circuits module, it comes fully assembled, tested and ready to go. Just take it out of the package and plug it in.

3 fully independent rows of attenuation ready for mixing and fading audio sounds or limiting CV signals. All channels include luxurious 45mm sliders with LED indicator at the tip to tell you when there is signal at the inputs. Linear range control with total cut off at the bottom and full pass through when the slider is at the top.

Tripple Attenuator Module features:

8hp (40MM) non-powered
45mm linear taper sliders with red indicator LEDs at the tip.
Non-Powered to fit in anywhere.
LED indicates incoming signal (audio and CV) at a glance.
Swizzle Circuits custom designed circuitry and PCB

Dual Opto-Gate

Seems simple; lots of uses! Similar to Vactrol control, the analog microchip this module is built around has been used for decades to switch isolated circuits and transfer high-speed signals. We took that ability and put it into a passive module that somehow has Gating indicator LEDs that show when the Gate is ON. How did we do that? Hmm. Just like every Swizzle Circuits module, it comes fully assembled, tested and ready to go. Just take it out of the package and plug it in.

At the heart of this module is the ILCT-6 2-channel opto-isolator. Full analog gating with nothing to get in the way of your signal. Inputs can be audio signals OR CV control signals. This little wonder can gate well into the audio range allowing some simple frequency modulation. Gating signals can come from an LFO, envelope, or sequencer.

Module Features:

- 2 fully independent Gating channels.
- Non-Powered; fits anywhere.
- Gate ON indicator LEDs on each channel.
- Very minimal Gate ON resistance.
- Capable of Gating into the audio range for frequency modulation
- Gating follows LFO or envelope shape. Swizzle Circuits custom designed PCB and circuitry.

https://reverb.com/shop/swizzle-circuits

TIPTOP AUDIO: MINIMAL TECHNO

TIPTOP AUDIO: MINIMAL TECHNO from Station 252 on Vimeo.

"Minimal techno jam using mostly Tiptop Audio modules. Trying different ways to have two parallel sequences. Z8k is great for that: running two separately reset sequences on Z8000 - vertical 7 step is playing ONE loaded with DOTS sound filtered by Z2040 and opened by a couple of Z4000, horizontal 8 step is playing Z3000 (saw) running through Tiptop Fold Processor and R*S VQVCF again governed by a couple of Z4000s.

Also features:

BD808

ONE: Hi Hat sound (off DOTS) going through Roland Demora

ONE: Ghost snare sound - running through reverbs and delay - no dry sound

Long reverb: Z-DSP: Halls OPf Valhalla ROOM

Short reverb: Z-DSP: eVerb 80s Verb 2

Delay: Alright Devices Chronoblob (feedback through Tiptop Z2040, output through WMD SSF Multi Mode Filter (Hi Pass)

Gates and triggers sequenced by Tioptop Circadian Rhythms and Trigger Riot

http://tiptopaudio.com/one/"

Vintage Synth Patches

Published on Sep 14, 2019 Vintage Synth Patches

Playlist:

1. Processed Vintage Drum Machines Loops Volume 1

Download here: https://payhip.com/b/j1bF

40% off with code: OR6BY6AU1G Expires: Sep 20th 2019

250 minimal techno loops ready to use in your productions.

Style: Techno/Minimal/Vintage
Category: Loops
Pack size: 280 MB
Format: 24 bit/44KHz wav files

Sample pack content:
60 kicks loops
20 snares loops
130 top loops (no kick)
40 demo loops

Loops are based on classic and rare vintage drum machines including Ace Tone, Boss, Casio, Eko, Emu, Ensoniq, Keio, Korg, Solton, Electro Harmonix, Vermona and Roland machines. They have been carefully processed through a bunch of effects for a modern minimal techno sound.

Enjoy making music!

2. Moog Sub Phatty Vintage Soundset

230 custom analog vintage patches for the Moog Sub Phatty.

Inspired by the old classic vintage analog synths like Moogs, Roland SH09, SH101, Sequential Pro-One, Korg MS20, etc.

All sounds are recorded without any external fx or mastering. Just pure Moog Sub Phatty into the audio Interface and DAW.

Download here: https://payhip.com/b/gAt7

The patches are provided as one rar file containing 230 sysex files.

By purchasing this soundset you get the right to use these sounds in your music. Sharing, reselling, making sample packs, including them in commercial patch collections, etc. is not allowed.

Enjoy making music!

3. BASS STATION 2 Analog Soundpack

100 custom analog classics patches for the Novation Bass Station II.

Inspired by the old classic vintage analog synths like Moogs, Roland SH09, SH101, Sequential Pro-One, Korg MS20, etc.

All sounds are recorded without any external fx or mastering. Just pure Bass Station II into the audio Interface and DAW.

Download here: https://payhip.com/b/v72C

The patches are provided as one sysex file.

By purchasing this soundset you get the right to use these sounds in your music. Sharing, reselling, making sample packs, including them in commercial patch collections, etc. is not allowed.

Enjoy making music!

4. Korg Prologue Vintage Soundset

120 custom vintage classic patches for the Korg Prologue.

Inspired by the old classic vintage analog synths like Roland Junos & Jupiters, Sequential Prophet 5 & Pro-One, Oberheims, Korg Polysix & Mono/Poly, Solina, Crumar, PPG, etc.

All sounds are recorded without any external fx or mastering. Just pure Prologue into the audio Interface and DAW.

Download here: https://payhip.com/b/zx2A

The patches are provided as one PRLGLIB file to be used with the Korg Prologue Sound Librarian.

Please note it will overwrite all original Patches so backup your data first or use
the Korg librairian tool !!

By purchasing this soundset you get the right to use these sounds in your music. Sharing, reselling, making sample packs, including them in commercial patch collections, etc. is not allowed.

Enjoy making music!

Minimal Systems Instruments MSI 001 Signal Processor Eurorack Module

flickr By Minimal System Instruments
(click for more)

"The MSI 001 Signal Processor is an all in one utility center for Eurorack Modular Synthesisers. Containing 5 standard attenuators (Both CV and Audio rates), 2 switched output attenuators (Audio and CV rates), 3 x 4 jack multiples, and finally a cross system audio interface.

For the latest info on Minimal System Instruments Eurorack Modular Synth Modules please visit our Facebook page and hit the 'Like' button.

www.facebook.com/msiplugins"

takete v2.0 audiovisual groovebox for iPhone and iPad Released

Published on Jan 15, 2020 Refined Stochastic Technology

https://apps.apple.com/au/app/takete/id1016132048

"The new version of takete for iOS is available now. since its initial release, the tools that were once focused on the specific needs of one live audiovisual project have now been broadened.

It still has the ability to act as a complex multichannel looper with modular routing capabilities. but now with extra focus on creating music within the groovebox from scratch - with minimal audio samples.

new features

- universal app runs on iPhone and iPad
- new pricing scheme with a monthly subscription available to access full feature set
- all new presets written specifically for the takete groovebox
- brand new audio and video samples created at 3BS Records
- new audio fx units
- global and local swing added
- improvements and updates to existing version 1 features throughout"

Follow-up to this post.

VELOCITY SYNTH MEET Coming to Seattle October 5th

Details here: https://www.velocityseattle.com

Exhibitors

4ms 4mscompany.com

4ms Company offers alternatives to traditional instruments with our poly-rhythmic clock modules that create evolving complex mathematical beat patterns, a resonator that can cast pop music into micro-tonal keys, a multi-channel wavetable oscillator, a routing matrix that's played like an instrument, and many more innovative devices. Rather than replicate concepts from the past, we strive to turn unique ideas into playable musical tools that expand the possibilities of music. We also offer Do-It-Yourself kits, and many of our designs are open-source.

Acid Rain Technology acidraintechnology.com

Acid Rain Technology is a manufacturer of music hardware out of Seattle, WA. We believe hardware instruments enable a unique connection between human and machine, and seek to improve this interaction through interface design for maximum playability.

After Later Audio afterlateraudio.com

After Later Audio is a boutique audio company located in Seattle, Washington. We make high quality Eurorack modules at accessible prices and we pride ourselves on responsive customer service. You can find our products for sale on our website, at various synth shops (Patchwerks, London Modular, Chuck Levin’s, and Modular 8), and on all of the major ecommerce sites.

CLICK FOR MORE »

New Quincas Moreira Quad Transient Detector Module

Quad Detector test Published on Apr 18, 2014 Quincas Moreira·20 videos

"It works :O !!!"

There have been previous posts featuring Quincas Moreira, however this is his first module. Via Quincas:

"This is my first original module design. I'm mostly a builder but I'm starting to get the hang of the CAD software and basic circuit theory. This module takes any incoming audio signal and creates a pulse out every time the audio passes the threshhold set by the knob. I intended it for the use you see in this video, using the computer audio interface to program modular beats and trigger events like envelopes and sequences. But you can also connect raw drum triggers, microphones, guitars, whatever.... The circuit is 4 times the same path, which basically is a preamp with ridiculous gain -> rectifier -> comparator -> inverter. The threshold is set by setting the initial signal attenuation.

I do plan to make PCBs and panels available to the DiY community, as well as selling them pre-assembled. At this point I'm deciding if it will be a stand-alone box which would work with any system, or if it'll be a module with 3U, 4U and 5U panel versions... The 5U version might become a 'Hex Detector' to make good use of so much panel space."

And via Quincas on The MATRIXSYNTH Lounge: "Hello friends, presenting the Quad Transient Detector, my first foray into module design. First time I designed a PCB and it worked fine after minimal troubleshooting. Makes cool solid gates out of any audio signal, so you can use your soundcard to sequence your modular drums, or any other use you can think of..."

Divkid's RND STEP overview and demo at Patchwerks!

Patchwerks Seattle

"RND STEP is a high performance, 3 channel sample and hold module, comprising of 6 unique sample and hold circuits in just 4HP.

Each channel features two internal analogue pink noise generators, and two sample and hold circuits split across unipolar and bipolar outputs.The unipolar output always samples its own noise source for a stepped random voltage between 0-5V. The bipolar output by default samples it’s own noise source (for -5V to +5V stepped random). However, you can override that connection with the sample input. This allows for sampling external audio or CV signals, and it can sample voltages anywhere between -10V and +10V with the sample input.

RND STEP will operate at slow trigger rates with highly extended hold times, ensuring it holds the voltage with minimal droop, but it will also operate up through audio rates for destructive downsampling FX for audio. When triggered at audio rates RND STEP outputs downsampled and clocked noise tones from the internal pink noise generators. These can then be used for modulation, percussion or sound FX.

Trigger input 1 will normalize across all 3 channels, meaning a single trigger can give 6 unique random voltages, of which 3 are bipolar and 3 are unipolar. The combination of both ensures you have the right voltages in the correct ranges for the sources you wish to modulate.

Order here: https://bit.ly/rnd_stp

https://patchwerks.com/

Demo by: Matthew Piecora (aka EZBOT)
https://www.youtube.com/EZBOTMUSIC"

PLAN B MODEL 25 MULTI-TASKING AUDIO PROC

via this auction

See the seller's other items for more.

"The M25 is one of two Swiss Army Knife processors that, along with it's counterpart, the Model 26 Control Signal Processor, provides a bank of essential audio synthesis functions within a single module: a Manual Attenuator, a Waveshaper, a White/Pink analog Noise Source, a Dual-VC Linear VCA and a DC coupled Ring Modulator and Fuzz Distortion -- all under a single 10HP faceplate.

The functionality of the M25 is broken down into three sections:

1) Wave Attenuator / Waveshaper / Noise Generator
With it's Mode switch set to the right, the top section of the Model 25 provides an often overlooked audio synthesis function - Manual Attenuation of both audio and control signals. It's range travels from full attenuation (no signal), through unity gain to +6dB, so that signals can be amplified from their input level by a factor of 2.

With the Mode switch thrown to the left, the M25's diode-based Waveshaper is put into the signal path. The level pot at that point effects both the signal amplitude and the amount of folding. Along with the manual pot, the Waveshaper has a dedicated voltage control input.

WIth no input present in the Attenuator/Waveshaper, the output of the returns a manually-adjustable analog White Noise source. When the Mode switch is thrown to left , the White Noise is shaded Pink. There is also a dedicated unity gain noise output. .

2) Linear VCA
The center section of the M25 hosts a standard linear VCA. Unlike the M13, no filtering is applied to the signal path and both AC and DC sources may be gated. There are two control voltage inputs provided - the first will take the output from full attenuation to unity gain. The second VC input is preescaled for the velocity output of a midi to CV converter.

3) Ring Modulator
The bottom section of the M25 is a 1496-based balanced dual sideband four quadrant multiplier - a Ring Modulator. Boasting over 65dB of carrier suppression, it features a unique corss-modulation Feedback switch not found in other Ring Modulators that introduces harmonic content with minimal sidebanding.


Fuzz Distortion
By running the same signal through both the X and Y inputs of the M25 Ring Modulator and engaging the Feedback Switch, the output is fuzzed (in a very big way). Have a listen to sound sample 3 below."

Joranalogue Contour 1

"After first presenting it to visitors of the Dutch Modular Fest and Machina Bristronica, the time has finally come to officially announce Contour 1 to the wider world.

For decades, the voltage controlled slew limiter has been a staple of modular synthesisers. With its extreme versatility, it can be used to slew control voltages (CVs), create envelopes, as a low-frequency or audio oscillator and much more.

Today, Contour 1 brings a fresh approach to this classic circuit. It delivers much improved performance and control by incorporating modern design techniques.

Explore anything from shape-shifting envelopes to rich VCO timbres: Contour 1 will make you re-think what a slew limiter can do.

At its most basic, a slew limiter slows down the rate of voltage change in a signal. On Contour 1, the rising and falling rates can be individually set using sliders and CV modulation.

The gate and trigger inputs allow the module to be used as a function generator: create snappy attack-release (AR) and attack-decay (AD) envelopes, with slope times ranging from 500 µs to 30 seconds. The dedicated gate input makes it easy to generate +10 V envelopes from any signal source. Using the large tactile push button, AD envelopes can be manually triggered. A trigger will also reset the output voltage.

When set to loop mode, Contour 1 will continually re-trigger itself. In this mode, it fulfils the role of a variable-shape low-frequency oscillator (LFO) or temperature-stable voltage controlled oscillator (VCO) in the audio range.

Both the rising and falling slopes can be individually bent, from concave through linear to convex. While doing so, the deviation in slope time, and thus oscillation frequency, is kept to a minimum. Since the bend parameters are separately voltage controllable, boundless modulation possibilities present themselves.

Explore anything from shape-shifting envelopes to rich VCO timbres: Contour 1 will make you re-think what a slew limiter can do.

CLICK FOR MORE »

Can this eurorack module take care off all your utility needs? - with Arkan / Malstrom

video upload by

"Utilities are often overlooked. But things like mixing, attenuating, inverting, and adding offset are what makes patches great. Today we take a closer look at Arkan from Malstrom. A module that can tackle all the basics, but adds voltage controlled polarizing to the mix. So, it can be used as a regular VCA, VC inverter and ring modulator as well. Beside that it can gain or boost signals into distortion or wave shaping. And it can do all that twice.

Timetable:
00:00 – Intro & sounds
01:18 – Overview – Input & Bias
03:41 – Overview – Modulation
06:13 – CV Patches
15:55 – Audio patches

Malstrom's Arkan is a two-channel bipolar VCA that is perfect for modifying control voltage signals and features a curvature parameter that adjusts the shape of the CV in a new way. While it excels at controlling voltage, the Arkan can be used as a unipolar VCA to control audio signals. When using the VCA at audio rates, you can dial in great sounding ring mod sounds and with channel 1 normalized to channel 2, plus the ability to chain multiple units together, rich modulation networks are easily created with minimal input. A built-in bias lets you control the offset for waveshaping and adjust how much of an additional signal gets mixed in or inverted. Grab an Arkan from Malstom and take control of your CV in creative ways.


ARKAN FEATURES

2-channel bi-polar VCA
Symmetrical signal boost up to 4x for gnarly audio and CV waveshaping
Asymmetrical bias waveshaping
Invert switch for each input
CV Input curvature lets you shape the signal and enhance the 0V attenuation
Chain multiple together with rear linking cables
Outputs are normalled

Hungry Robot Modular - Guitar Pedal Style Stand Alone Modules

Published on Jul 23, 2018 Knobs

Note this is the first post to feature Hungry Robot Modular. We have a new maker in town. As you can see in the video above from Knobs, these are individual modules in stomp-box like format. Know the jacks are on the top face only and there are no pedal switches. These are meant for the desktop and not the floor.

"Today, we do modular synthesis, with pedals.

0:31 - Overview
1:37 - Minimal
2:07 - Not minimal
2:47 - With semi-modular
3:24 - Super-synth
3:50 - Outro

Other synthesizers:
Make Noice 0-Coast
Malekko Manther

If you want to download these sounds and listen to them while you use an elliptical machine, Patreon:
https://www.patreon.com/KNOBs"

Details on the modules via https://www.hungryrobotmodular.com/:

"The Hungry Robot VCO is an all-analog, low cost, workhorse of a VCO. It can output triangle, sawtooth, and square waveforms simultaneously with tremendous bass response. The VCO has exceptional 1V/OCT tracking with FM modulation. The FM modulation input has a built-in CV attenuator as well as an inversion switch. The square wave has PWM with a built-in CV attenuator. As with all Hungry Robot "Modular Boxes" the VCO can be powered with a simple 9V DC, Negative Center power supply.

CLICK FOR MORE »

Meet OTTO - New Raspberry PI Based Multi-Engine Based Synth Inspired by the OP-1

Details via Github:

"Making electronic music is awesome! But for most of us, it requires a lot of setup, a lot of moving a mouse around on a laptop that's probably not quite equipped to handle realtime audio processing. Don't you wish you had one single device, which was xbuilt to do it all for you, easily and on the fly?

Introducing the OTTO!

The OTTO is a complete hardware and software solution, with synths, a sampler, effects, sequencers, and studio modules. The interface is modal, easy to use, simple, but most of all, it encourages experimentation. The graphics are quirky, and the workflow is minimal.

That sounds cool and all, but haven't I heard about this before?
— You

Yes, the OTTO is heavily inspired by the OP-1, in fact it started off as a direct clone, but these days we try to take a different spin on an idea that is fundamentally the same.

At this point it might be important to mention that the OTTO is not, and will never be, a commercially aimed product. It is open source by nature, in both hardware and software. If you want an OTTO, you're going to get your hands dirty, if not with the code, at least with the hardware.

Now that proper introductions are made, we would like to invite you to our discord server where we hang out and discuss all things OTTO.

The OTTO is basically going to be a Rpi3 (or other similar boards, we are looking into that), a screen, a DAC, 4 encoders and some 30+ buttons/keys. Some of us are currently building prototypes, and the formfactors and features vary greatly. Below this you see two OTTO hardware prototypes. Feature wise they are similar, but the first one is hand-wired, lasercut, and uses arduino pro micros for handling the keys/encoders. The second one is 3D printed, uses a PCB with onboard microcontroler etc.

As you can see, the OTTO can be built very differently depending on your skills, your avaliable resources and tools, and your priorities. You can also have other features than these two, for example the DSP all supports velocity sensitive keys.

You can find more info about the first prototype design on the "Otto Proto One" on this dedicated repo, and @cester-ino's over at his repo

The software

The software is written in (very) modern C++, and the goal is to be as modular and flexible as possible.

Technology
Core C++ 17 (you will need a very new compiler.)
Graphics C++ wrapper on top of NanoVG, with swappable backends, currently GLFW and EGL are available.
Audio/MIDI Designed to be swappable, though currently the only one available is jack.
DSP C++ and Faust (compiled down to C++)
It is possible to run the software on the desktop, with keybinds emulating the physical buttons and encoders.

For build instructions, check out the wiki.

Backbone

While OTTOs may differ on a lot, some things are fairly set in stone :

A Raspberry Pi (or similar) at the core, running a minimal Linux distro.
A >= 320x240 RGB screen, preferably AMOLED.
~30 hardware buttons, so nearly every feature has its own button.
4 colour coded rotary encoders (full credits to the OP-1 for that idea), as the main controls. Each screen has a maximum of 4 variables which will be coloured corresponding to their encoder.
Roadmap

CLICK FOR MORE »

Open Labs Neko LX5 SN NLX0362

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"OVERVIEW (from original Open Labs promotional material):

Sequence songs, create beats, track vocals and instruments, trigger MP3s, and perform live - the NeKo LX5 does it all.

With a 15" touchscreen, 61 black-and-white keys, external QWERTY keyboard, and running Windows OS, the NeKo LX5 is a world-class multimedia instrument. This portable media production station was specifically designed with superb keyboard playability to meet the needs of studio music production and live performance effortlessly.

CLICK FOR MORE »

MadLab ScuttleBut - Melodic Tones [No Talking]

Published on Mar 24, 2020 midierror

"More messing woith the ScuttleBut, this time with some softer, mellow tones. The Scuttlebut is a super small DIY electronics synth you can make ourself.

Get the ScuttleBut on Tindie here: https://www.tindie.com/products/madla...


Running through some delicious Valhalla Delay https://valhalladsp.com"

"Scuttlebut is a simple noise generator with a built-in mini sequencer. It's an experiment in minimalism to see how much could be squeezed from a simple 8-pin 8-bit microcontroller with minimal audio circuitry. It's easy to build - designed in fact for a soldering workshop for beginners - and only uses through-hole components.

The user controls are a couple of rotary presets, a pair of pushbuttons, a touch pad and a light sensor. The presets control a pair of oscillators and the pushbuttons select waveforms (sine, triangle, sawtooth etc.) and modulation (frequency, amplitude, phase etc.). The touch pad activates the light sensor which then further modulates the sound.

Includes a record mode in which a sequence of different sounds can be recorded and then looped back.


Supplied as a kit of PCB and components. Power input is via a 9V PP3 battery snap and audio output is mono through a 3.5mm jack socket."

Rephazer - Little Mad Sometimes (Live Minimal/Acid with Octatrack, Analog Four, vPed and OP-1)

Published on Aug 6, 2016 Rephazer

"Hi folks, It's been a while since I did a live 'house' jam so here it is..

Some heavy use of the Elektron Octatrack and Analog Four on the first half of the jam featuring a kind of 'Minimal Acid' style.. The Mode Machines vPed and Teenage Engineering OP-1 are used some more on the second half of the jam featuring a more experimental melodic minimal techno style.

All audio is going into the Octatrack and the audio output of the Octatrack is recorded with the Zoom H4n.

Sorry for the quick fade-out at the end.. Not sure why that happened while rendering the video, but there used to be a long(er) reverb tail.."

Serge Modular Analog Synthesizer & Processor w Dual Transient Generator

via this auction - SN 0294

"Up for auction is a beautiful condition Serge Modular Fully Loaded Panel! As you can tell from the photographs, the synth is in immaculate shape and feels exactly like it did straight from Rex Probe at Sound Transform Systems! This Serge is a 1996 Serge and features the build quality and routing of the older more expensive (and expansive) Serge designs. For anyone looking to expand on their Serge rig or their current modular system, this is a great panel to buy. Because this panel features balanced line level inputs and outputs it can also be used as a standalone studio/live processors.

Quadrature Oscillator:
Used mainly for quadraphonic panning; simultaneous sine-cosine output waveforms. Voltage-controlled LFO.Neat 'hold' input freezes the state of the waveform when 'hold' goes high.

Dual Processor:
Deceptively simple. It's two 3-input DC mixers, each input having an inverting attenuator, and with a master DC offset knob, -5 to +5 volts. Can also be used as a spare audio mixer. You can use this module as a voltage multiplier. Put your incoming voltage at one of the inputs, then multiple off that input to the next processor input to double it. Keep in mind that you can use this module with no input voltages. The offset knob is handy for driving one or more modules together as a group, or for using negative bias to VC an oscillator into extra-low territory. Since several of the Serge modules have no VC processing input, it's handy to have one of these to trim the output of a DSG, Random Source, or TKB Pressure into a more subtle range.

Dual Transient Generator:
Insanely versatile module; there's very little it can't do. Two independent slew generators (positive and negative) are combined to make a Universal Slope Generator. This Dual module give you two of them. Trigger it with a pulse and you get a single AR type envelope waveform. When the cycle starts a gate trigger output goes low. When the cycle is finished, it goes high. So to make it cycle repetitively, connect the GATE to TRIGGER. Rise and Fall times are settable by knob. Here's a short list of things you can do with this module: AR transient generator, VC slew limiter, VC LFO (variable slope triangle and rectangular waveforms), VC audio oscillator, VC trigger delay, VC clock, VCLPF, VC pulse divider, Envelope Follower. Talk about wide range - cycle times go from hours to microseconds, without range switching. You can almost make an entire synthesizer with nothing but this module, used in its various ways.

The Slope Generator's output is linear, but by patching the output back into the attenuated VC input you can create exponential waveforms (with the attenuator knob set after 12 o'clock) or log waveforms (with the knob set before 12 noon). How can this module act as a filter? It slew-limits the high frequency components of the incoming signal, at a rate set by rise and fall knobs, and VC. If the rise and fall knobs are set fully clockwise (fastest rate), filtering will be audibly minimal, seeing as the Slope Generator is responding rapidly to input. Turning rise and fall knobs counterclockwise increases the response time, and high frequency content at the output will decrease. Turn them fully counterclockwise and audio output will be minimal. So feed this thing a low harmonic content waveform like a sine or triangle, and you've got a rough equivalent VCA!

This sort of filtering action is more subtle than the regular VCFs, though a bit more obvious than a 'tone control.' Good for mellowing out raspy and buzzy tones. Cross-connecting two Slope Generators together generates interesting 'chaotic' waveforms. Connect the output of one to the attenuated VC input of the other, then take the output of the second and patch it to the input of the first. Play with the attenuator settings."

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Vintage EMS REHBERG LOGIK SYNTHI SN 008 w/ DKE SN 91

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via this auction

Update: some warnings on this one in the comments below. When you buy through eBay, buy through eBay for the buyer protection. I cannot stress it enough. If you try and make a deal outside of eBay to save some money, you risk getting scammed.

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Expansion On: Me Live @ MachineDrum SPS-1 MkII (01-12-07)

YouTube via BXT2k7
"Please visit http://www.bdwnmusic.com !

Added some more elements to the 'jam' in my previous video (" Me Live @ MachineDrum SPS-1 MkII (28-11-07) ").

Didn't use my crappy camera mic to record the audio this time, so there's good audio quality :)."


Me Live @ MachineDrum SPS-1 MkII (28-11-07)


BXT @ MD (08-01-08) - Techno/Minimal/Blabla


BDWN @ MachineDrum (24-09-08) - Minimal/Tech-House/Techno


BDWN @ MM & MD (09-02-08) - House/Minimal/Techno II