Korg 770 Analog Synthesizer

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

via this listing

"Here's your chance to own this rare historic synth. All knobs, keys, pots and wood-housing is original. Everything has been cleaned and everything is functioning. This thing produces beautifully warm bass and lead sounds. And the ring modulator will take you into some wild sci-fi territories too. Only major blemish is a chipped key (see last photo) key still is fully functional.

The Korg 770 is a monophonic analog synthesizer introduced by Korg in 1976. Based on the same circuitry as the two-VCO version of the Mini-Korg, the 770 offered a more conventional re-packaging, and some control improvements to make the synth more versatile.

VCO 1 offered five choices of waveform, with triangle, sawtooth, square, pulse, and a pulse-width-modulated (rate controlled by an LFO) pulse wave on tap, or an external input could be selected. The VCO included an octave select switch with six settings, including a 64' deep bass setting. VCO 2 produced only a sawtooth wave, or it could be ring modulated against VCO 2, or any of three varieties of noise could be selected. The tuning could be offset from VCO 1. A blend control allowed the user to select the mix of the two signal sources. Other controls at the right side of the panel allowed the user to apply an "auto bend", or vibrato controlled by a dedicated LFO separate from the main LFO. (There were no pitch or mod wheels.)

CLICK FOR MORE »

Moog System 35 Limited-Edition Analog Modular Synth with Moog 953 Duophonic Keyboard

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

via this listing

"Limited-Edition Moog System 35 reissue
Serial #19 of 35 systems released worldwide.

Includes walnut finish Moog 953 Duophonic Keyboard. System 35 reissue units hand built by Moog to precisely recreate the original 1973 system. Synth and keyboard are essentially flawless. Small scratch on the side of the keyboard (included in last picture), but otherwise hardly noticeable.

From Moog:

Three years of research and design has culminated in Moog Music recommencing the manufacturing of a limited number of Moog System 35 modular synthesizers. Using all of the original documentation, as well as the original circuit board and art files, Moog engineers have hand-built true recreations of the original instruments based on their 1973 factory specifications.

Each individual module is hand-stuffed and the components are hand-soldered to circuit boards using traditional wiring methods. Each module is then finished with a photo-etched aluminum panel, and placed in its new modular instrument.

System 35 Modules

3x 902 Voltage Controlled Amplifiers
1x 904A Voltage Controlled Low Pass Filter
1x 904B Voltage Controlled High Pass Filter
1x 907A Fixed Filter Bank:
3x 911 Envelope Generators:
1x 921 Voltage Controlled Oscillator:
2x 921A Oscillator drivers:
4x 921B Oscillators:
1x 923 Random Noise/Filter:
2x CP3A Console Panels:
1x CP4A Console Panel:
1x CP8A Console Panel:
1x CP35 Console Panel:
1x 180 Watt 120 VAC or 230 VAC Switch Selectable Power Supply

Fully modular system (no internal patching) comes bundled with 1/4" patch cables"

CLICK FOR MORE »

ARP Quartet SN 87/ 50

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

via this listing

"The ARP Quartet was a rebadged Siel Orchestra - a very versatile analog 49 note polyphonic synthesizer from 1979. While the settings may look fairly simple, a complex array of sounds can be created via different combinations of presets, an LFO, ADSR, a two pole voltage controlled filter, and triple analog BBD delay lines as found in the ARP String Ensemble/Solina, ARP Omni 1 & 2, and ARP Quadra.

Mix and match between any combination of the four tone color families (Brass, String, Organ, Piano), eight instrument presets (Trumpet, Trombone, Cello, Violin, Organ, Celeste, Piano, and Honky Tonk), and several settings that are available depending on your combination of instrument families."

CLICK FOR MORE »

Moog Satellite analog synthesizer signed by Bob Moog SN 2176782

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

via this listing

"Moog described the Satellite like this:

An electronic music synthesizer is disclosed in which the sound producing chain includes a voltage-controlled oscillator, band-pass filter, low-pass filter, and amplifier in which selected control currents are supplied to low impedance points within the synthesizer circuit from a resistor matrix.

The synthesizer produces sounds approximating different acoustic musical instruments or having different tonal qualities by the application of a predetermined voltage to one of fifteen input columns of the resistor matrix with selected other columns being grounded. The currents provided by the resistor matrix in combination with other externally generated currents control the center frequency and bandwidth of the band-pass filter, the cutoff frequency of the low-pass filter, the gain of the voltage-controlled amplifier, the time constants of transient contour currents used to control the filters and amplifier, and the waveform produced by the voltage-controlled oscillator.

Specialized keyboard, waveshaping, contour generating and modulating circuits are also provided."

CLICK FOR MORE »

Moog Sonic Six Analog Synthesizer w/ Custom Knobs

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

via this listing

"The Moog Sonic Six is a 2-VCO duophonic synthesizer with a built-in speaker and a 4-octave, 49-note (C-C) keyboard. Each VCO can output sawtooth, triangle, and rectangle (pulse/square) waveforms as well as 2 "waveform generators." A "quality" knob adjusts the width of the rectangular waveform. White or pink noise is also available. The Sonic Six can be set for 3 keyboard modes; high note priority, low note priority, or duophonic. The Sonic Six can also be set to an alternate tuning across the keyboard (different interval between octaves of the keyboard). Portamento rate is controlled by a knob. The envelope section features a basic envelope, with variable control for attack and decay and a switchable release (follows decay) and sustain. It had a single VCF, low-pass voltage controlled filter. Two multimode LFOs are available. Their speed is independently variable and can be controlled by the envelope."

CLICK FOR MORE »

Roland G-505 Guitar Synthesizer Controller, GR-300 Polyphonic Guitar Synth

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


via this listing

"Up for sale, a 1980s Roland G-505 Guitar Synthesizer Controller and GR-300 Polyphonic Guitar Synthesizer [SN 090427] in 100% original condition and in perfect working order, complete with the original 24-pin cable. First introduced in 1980 as a follow-up to the GR-500, the GR-300 is perhaps best known for its usage by Pat Metheny; produced at the venerable Fujigen factory in Japan, this versatile guitar synth can deliver a huge range of decidedly unique sounds, with a hexaphonic fuzz circuit, VCO synth, and combinations of the two. This GR-300 comes complete with the G-505 Guitar Controller, taking its design cues from a Strat with a sleek ash body, one-piece maple neck, and a trio of single coil pickups alongside the synth pickup.

The G-505 Guitar Controller guitar has plenty of natural sparkle and shimmer, and the Roland PU-134S pickups deliver a bevy of Strat-style tonalities via the five-way selector switch. Weighing 8lbs 12oz, the G-505 has been professionally setup here at Mike & Mike’s Guitar Bar with 10-46 strings, low action, and spot-on intonation.

The maple neck has a slender C-shaped profile carve with good shoulders, gaining appreciably more heft and roundness in the upper registers, measuring .810” deep at the 1st fret and 1.015” at the 12th. The fretboard exhibits light finger wear through the gloss, and the slender fretwire ostensibly benefits from a level and crown in this guitar’s lifetime, showing virtually no wear. This Roland plays cleanly up the 25 1/2“ scale with a straight neck and a responsive, optimally-adjusted truss rod, and the nut measures 1.650” (42mm) in width. The headstock features a bullet truss rod nut and gold “GR” logo, and the Gotoh tuning machines function reliably. The back of the headstock retains the silver foil serialized sticker.

The electronics on the guitar controller are untouched, with a control scheme including Master Volume, Guitar Tone, Guitar/EG Balance (Blend), VCF Cutoff Frequency, VCR Resonance, and LFO (Vibrato) Depth knobs. Additionally, the three-position Mode toggle enables on-the-fly switches between Hexaphonic Fuzz only (Mode 1), Fuzz and VCO synth tandem (Mode 2) and Synth only (mode 3). The controls are capped by the original sextet of knobs with ridged grips for easy adjustments, and the three-ply white pickguard rounds out the plastics.

Cosmetic wear on the gloss Metallic Blue finish includes a number of nicks and dings on the body as a whole, most prominent along the lower bout perimeter, with some finish chipping adjacent to the output jacks, and some very subtle texturing in the finish on the top. The neck profile retains its smooth gloss, with a handful of shallow marks that have no impact on playability.

CLICK FOR MORE »

Sequential Circuits Split-Eight SN 02917 w/ Custom White Side Panels

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

via this listing

"Relatively uncommon but a fantastic sounding analogue synth capable of some extremely rich sounds when compared to modern digital offerings.

This unit is completely restored and fully operational.

This unit has seen the following service:

Completely refurbished keybed
All button contacts (Keybed and front panel buttons) have been refurbished
ALL electrolytic caps replaced including those on the audio board.
New memory battery installed
New voltage regulators installed
New led matrix chips installed
Full factory sysex installation with original factory sounds restored.
Fully tested and working great!
The Split-8 makes for a very nice programmable polyphonic analog synthesizer with complete MIDI implementation. With 8 voices and 8 oscillators (Curtis 3394 SENTE chips) the Split-8 is a heavy contender against the Roland Juno-106.

The keyboard features splits and layers, all of which can be saved with patch data. Choose between 8 voice polyphony with 1 oscillator per voice, 4 voice polyphony with dual oscillators per voice, 2 voice polyphony with a mega 4 oscillators per voice, or the unison mode which is just a fat 8-voice solo mode for trance bass and lead heaven! Similar to the Juno-106, the Split-8 uses a Chorus effect to liven up the sounds.

Split-8 features:

One voltage-controlled oscillator (VCO) for each of the eight voices. Switches are used to set any combination of triangular, sawtooth and square wave. Pulse width modulation (PWM) is available.
For each voice, the coarse tuning is available within four octaves as well as the fine tuning.
Programmable "poly mod" allows the audio output of one voice to feed another's VCF. In this case, the polyphony is reduced to four voices.
The voltage-controlled low-pass filter (LP VCF) has a four-stage structure with a slope of 24 dB per octave. Cutoff, resonance and modulation depth adjustments are available. A keyboard tracking mode is also provided (higher notes have a higher cutoff frequency).
The low-frequency oscillator (LFO) produces a triangular or rectangular waveform in the range from 0.25 to 20 Hz. It can be used to modulate the cutoff frequency of VCF, the pitch of the VCO and the pulse-width modulation.
ADSR envelope generators for VCF and VCA.
Keyboard "split" and "layer" functions are available.
Programmable chorus effect.
Full MIDI support, including downloading presets via the sysex protocol."

CLICK FOR MORE »

Erica Synths Introduces EDU DIY SNARE DRUM

Designing a simple analog snare drum from scratch

video upload by Moritz Klein

"No drum machine is really complete without a punchy, snappy snare. Together with the kick, it creates the rhythmic backbone for most grooves.

So in my ongoing quest for creating a Roland-inspired modular drum machine, I knew I had to come up with a snare circuit that would complement the kick and hi-hat I‘ve already designed. After a lot of fine tuning, I landed on a circuit that can emulate a TR-606, TR-808 or TR-909 snare."

No drum machine is really complete without a punchy, snappy Snare Drum. Together with the Kick, it creates the rhythmic backbone for most grooves. So for our percussion-focused second season of educational DIY kits, we knew we had to come up with a Snare circuit that would complement the Kick and Hi-Hat we’ve already released. After a lot of fine tuning, here’s what we came up with: introducing mki x es.edu DIY Snare Drum.

Features
Manual and CV controlled Tune
Tune CV depth attenuator
Manual Attack and Decay control
Manual and CV Snappy (noise and tone crossfade) control
Accent input

We – Erica Synths and Moritz Klein – have developed a series of educational DIY kits under the brand name mki x es.EDU with one specific goal in mind: to teach people with little-to-no prior experience how to design analog synthesizer circuits from scratch. What you’ll find in the box is not simply meant to be soldered together and then disappear in your rack. Instead, we want to take you through the circuit design process step by step, explaining every choice we’ve made and how it impacts the finished module.

NB! All kits in these series are simple and come with extensive user manuals which can be downloaded separately, therefore we will not provide customer support in case your DIY build fails to function or similar.

CLICK FOR MORE »

Leploop Introduces ArpoVoce Eurorack Synthesizer Module

video upload by

"With the new synth #arpoloop will also come the ArpoVoce a special module of 60hp with, 4 VCO, 4 VCA, 3 envelope, cassa, snare and noise generator, a complete solution for compact case. https://www.leploop.org/2023/11/20/th..."

"We are getting ready with the new synth and also the big module prototype, it’s ready.

ArpoVoce it’s the Arpoloop voice board in Euro Rack format.

A big module of 60HP offering all you need for a compact setup.

4 voltage controlled Hz\Volt oscillators (VCO)

VCO1 sine wave with sync and FM

VCO2 sine wave with FM

VCO3 sine wave with sync and FM

VCO4 sine-square-sawtooth with LFO option

CLICK FOR MORE »

DNIPRO MODULAR qTone Dual-Channel Quantizer

qTone quantizer tutorial video upload by DNIPRO MODULAR

"Here is a step by step qTone module demo.This will involve creating some tunes with a quantizer."

"The Dnipro Modular qTone is a two-channel quantizer for Eurorack systems, providing an easy way to convert any CV signal to perfectly quantized musical notes. With 16 user-defined scales, you can effortlessly tailor your melodies to perfectly match the tonal make-up of your music, or get creative by layering two different scales on each quantizer channel. Both channels feature options for Glide or portamento, Offset, which adjusts CV value pre-quantization, and Transpose, which nudges quantized CV values up or down in semitones.

Each of the four quantizer settings may be controlled by CV, opening up highly flexible options for continuously morphing melodic sequences. Finally, utilizing the Trig inputs allow you to operate the quantizer much like a sample and hold, only passing a newly sampled voltage when a trigger is applied. This is useful for creating rhythmic pitch changes when using non-clocked CV sources like LFOs. With so much melody-mangling potential in just 6hp, qTone from Dnipro Modular is a fantastic choice for quantization in any system.

CLICK FOR MORE »

Frequency Central feat. DARK STAR - Super compact full voice bursting with character and features!

video upload by Frequency Central

"Dark Star consists of 4 sections:

-Voltage Controlled Oscillator based on AS3340 with sawtooth, triangle and pulse waveforms
-Voltage Controlled Filter with lowpass and highpass options, Drive control, Sweep control which attenuates amount of Release CV
-Release generator with CV input for voltage control of release time. Option for sustain via jumper on rear panel.
-Voltage Controlled Amplifier

Together they form a pre-patched super versatile analogue synthesiser voice.

Additionally, each section is fully modular in it’s own right, so there are patch points for:

-1V/oct CV input
-PWM CV input – attenuator doubles as manual pulse width when no external signal is present
-Gate input for Release or Sustain/Release
-Release CV input for voltage control of Release time
-VCF audio input with attenuator, for introducing external audio
-VCF CV input with attenuator (1V/oct CV is normalised to this input)
-VCA audio input (VCF is normalised to this input)
-VCA CV input (Release CV is normalised to this input)
-Release CV output
-VCO audio output
-VCF audio output
-VCA audio output"

UDO Super 6 - "Dance Evolution" Soundset (40 Patches)

video upload by

"LFO Store is proud to present an extraordinary soundset for UDO Super 6, a 12-voice polyphonic, binaural analog-hybrid synthesizer. This soundset brings out the gorgeous analog tone of a powerful synthesizer using its advanced digital FPGA hardware oscillators and voltage-controlled analog technology.

Here you will find different categories of patches - ARPs, bass, leads, pads, plucks, synths, etc. These sounds created by the professional sound designer, OttO K. Schwarz, known for his cooperation with Access (Virus Ti), Modal Electronics (Argon, Cobalt), Native Instruments (Kontakt), and others. Each patch is carefully crafted and you can model the sound using velocity, modulation wheel and pitchbend. These patches are ideal for electronic dance music (synthwave, trance, techno, etc.), modern cinematic music and other styles.

We wish you a wonderful journey through this world of sounds and inspiration in creating great musical compositions!"

JCS BN-1 "Bakery of Noise" Digital PCM Synthesizer – One of a Kind

Note: Auction links are affiliate links for which the site may be compensated. "JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 1 (Prototype)

video upload by blarrer20

"JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 2 (Finished)

video upload by blarrer20

"This video demonstrates the final version of a 4-bit Linear PCM synthesizer that I have designed and built over about two months. It makes use of mostly Soviet clones of 7400 and 74LS series TTL chips, with no microcontrollers involved. It has a 256 x 4 SRAM chip that allows the user to program whatever waveforms may be desired, with looping capability, and starting at whatever point desired. Most importantly, it is able to be controlled by an external source, for example a keyboard instrument. It also has a frequency doubler circuit. This video is part 2 of 2, showing the finished product.

If you want to skip right to the sounds, go to 27:08"

via this listing

Pics of the inside below.

Details from the listing:

CLICK FOR MORE »

Herbie Hancock “Chameleon” Synth Bass Breakdown

video upload by Anthony Marinelli

"Check out my breakdown of Herbie Hancock's 'Chameleon' bass sound. I'll show you step by step how to re-create it using the same 1972 ARP Odyssey model synthesizer as Herbie...including performance tips!

Not only is it one of my all-time favorite synth bass sounds, it also changed the reach of jazz music by opening up the mindset of both jazz musicians and the listening public to fresh new sounds. This was much needed in the 70's to compete with rock 'n' roll's dominance of the airwaves. Synth sounds allowed jazz musicians to connect with a larger set of minds and voices yet retain still retain musical complexity, quality, and integrity.

The cornerstone techniques in this video will effectively elevate your synthesizer power, no matter what style you prefer.

00:00 "Chameleon" intro cover performance
00:30 Anthony's Intro
01:25 ARP Odyssey Panel Explanation
02:12 Setting the Oscillator Pitch & Waveforms
03:06 Setting the Mixer & Voltage Controlled Filter VCF
04:05 Setting the ADSR Envelope Generator
04:59 Setting the VCA
05:37 Setting the Keyboard Control Voltage
06:56 Dialing in the Distortion
08:35 Keyboard Articulation & Phrasing
09:34 Summary of "Chameleon" Bass
10:22 Logo (theme music)"

New Patch on the Moog Model 10 Modular Synthesizer

video upload by Beto Hale

"Three oscillators total; one using a sawtooth wave; another a pulsewave, and a third using a sine wave (used as an LFO).

The first two sent to the audio input of the voltage controlled low pass filter; the third (LFO) sent into the Control Voltage input of the filter.

The sine wave of the LFO is set to a frequency to match the tempo (in 16th notes) of the song I’m working on."

BugBrand Introduces FilterQAmp - Filter, Amp and Decay Envelope Module in Frac Format

"

View this post on Instagram

A post shared by Tom Bugs (@bugbrand_bristol)

via BugBrand

"The FilterQAmp (FQA) combines a 2-pole State Variable VC Filter with a Linear VC Amplifier and an inbuilt variable-decay Envelope Generator. It is capable both of processing and, when the filter is self-oscillating, generation of synthesised sounds such as drums.

The VCF section contains a State Variable Filter (similar to my other designs) – this offers switchable Low or High Pass responses and covers the full audio range. It is temperature compensated & tracks 1V/Oct accurately. The Resonance/Q is voltage controlled with a linear response up to self-oscillation – this creates a pure sinewave, useful for synthesis.

The VCA is linear in response and takes the Low/Hi-pass output from the VCF section. It can either be set, via rear jumper, to a clean response (gain from 0 to +1) or saturation (gain from 0 to +1 then +/-5V zener clipping beyond – unity at approx 10 o’clock rotation).

The Filter, Q and Amp sections each have a CV Modulation depth control with switchable polarity (centre off) – the Filter has an additional 1V/Oct control input. In addition there is a simple variable-decay Envelope Generator which can be fired either with the manual Trig button or via the Trig input – this has a comparator so triggers on any signal over c.+1V. Decay time is variable between approx 15mS and 3Secs with an amplitude of 0 to +10V. The envelope is internally routed to modulate the Filter and Amp sections via individual depth controls – it could be manually patched to QCV with a 0.75″ shorting bar or cable.

When Q is set to full, the self-oscillating filter makes good sound generator – it can also ring when set below self-oscillation & fed with sharp edges such as gate signals. A basic drum synth can be achieved with self-oscillation and the decay envelope opening the VCA – try varying how much the envelope modulates the filter cutoff too. You can feed the main output back to the FCV input to self-modulate, resulting in an interesting peaky waveform."

Befaco Octaves VCO Jam with Turing and Pony VCO, VCF

video upload by Molten Music Technology

"I gave Befaco's new Octaves VCO a bit of a run, pairing it through the Pony VCF and playing along with the Pony VCO and friends."

See the launch party posted earlier today.

Octaves VCO via Befaco

A harsh and funky take of an additive Oscillator.

Pile up multiplications of your frequency to get a lo-fi-retro wall of squared sound!

You get six doubled frequency pulses, or octaves, with common PWM and volume control for each of them.

The output of each is cascaded to the next one, so you can either have one output with all frequencies or break the chain and get several sums and modulate each independently!

FEATURES

Six bands, multiple of the base frequency.

Square wave oscillator with Octaves selector PWM control and sync.

Range control for Tune pot.

Volume CV control and individual output for each band

Cascaded summing outputs.

SPECS

Current needs: +12V: 110mA, -12V: 84mA

Width: 12 HP

Depth: 22mm (assembled and DIY), including power connector

Aluminium, heat-treated front panel

Designed, kits prepared and completed modules assembled in Barcelona

PONY VCF via Befaco

Space-conscious lowpass filter and volume processor.

A combination of VCF + VCA + Mixer that lets you mix three different sound sources, and shape their tone, and levels in a breeze.

The Pony Filter is built around the SSI2144 FATKEYS™ Chip. Has the elegant sound of the classic transistor filter without the associated distortions, due to Dave Rossum’s “improved ladder” topology.

FEATURES

3 Channel Mixer (Out normalized to channel three for feedback)

Temperature-compensated Q and frequency.

Compensated Volume VS Resonance

2 Cuttof CV INs.

CV 1 Selectable routing Cut-Off or Cut-Off+VCA

Voltage controlled Q

Two Segment Peak Meter

SPECS

Four-pole, 24 dB/octave

Current needs: +12V=50mA, -12V=45mA

Width: 6 HP

Depth Assembled Version: 22mm

Depth DIY Kit Version: 35 mm

Designed, kits prepared and assembled in Barcelona.

THE CROSFOBERMORDULATOR - DO IT YOURSELF FULL KOSMO SYNTH VOICE

video upload by LOOK MUM NO COMPUTER

"The Crosfobermordulator is now out! Modular Synth Voice
more info here :-
https://www.lookmumnocomputer.com/pro..."

"The Crosfobermordulator is a full synth voice in kosmo format, it was built after sharing a DIY how to video of making a DIY synth voice on breadboard link here, i took that design and i built on it a tad, to make a cross modulating funky synth voice with its own funky quirks, its not a do all synth voice! but it sure is funky. with 2 oscillators (one primary oscillator and a modulation oscillator that can also be a second oscillator, or even both at the same time, 1 low pass funky distorting harmonic filter, noise, 2 envelope generators and a voltage controlled depth of modulation which really opens up to some funky sounds!"

WMD Digital VCA MKIII - Dual Zero-Crossing VCA and Polarizer - Announcement

video upload by WMDevices

"Announcing the MKIII version of the WMD Digital VCA eurorack module. This new and improved dual VCA and Polarizer (bipolar VCA) has a zero-crossing detector and noise source. At only 8HP, this module can do many cool things for any modular synth in a small space."

WMD Digital VCA MKIII - In Depth Demo

video upload by WMDevices

"WMD is back and finally in production with the new Digital VCA MKIII eurorack module. This modern take on a classic WMD design combines a Zero Crossing Detector (ZCD), a Voltage Controlled Attenuator (VCA), and a couple noise sources to make a super versatile tool at only 8HP. Watch as Alex Anderson explains many of the features and use cases.

00:00 Overview
00:54 White Noise Explanation
02:16 VCA overview
04:55 Remove clicks and pops the ZCD
07:59 Trigger Mode
14:06 Amplitude modulation and the Bipolar functions
18:51 Normaling of 'B' inputs with Dual VCA patch example
20:56 Mixing capabilities
23:00 ZCD Outputs"

via WMD

"I've done several designs of this circuit over the years, the first one had no knobs, the second was too small, the MKIII is finally how this circuit should be packaged. This module does some really cool stuff and is super useful in any system.

The Digital VCA lets signal through like a normal VCA, but the CV and attenuation level is controlled digitally. This lets us do things like wait until there is a zero crossing to change the amplitude, resulting in clickless amplitude changes.

The Trigger mode causes the VCA to only update when a trigger is received. The addition of a noise circuit for each side let us do a very quick and easy sample and hold that never droops. With no input, 5V is normaled to the attenuator, so you get a 0-5V sample and hold. In Bipolar mode, you can get -5 to +5V.

Both sides have bipolar VCA mode (polarizer), which lets them invert the signal when negative CV comes in. Also known as ring modulation. With the zero crossing detector, this can produce some super wild wave shapes.

Limited run of 410 units for Eurorack Modular Synthesizer systems. I won't be making more or doing another version in the future."

Corsynth Drum Modules + Transistor Mixer

video upload by NOISEBUG

"Corsynth - Massive Drums + Harmonic Mixer

The Corsynth drum collection for MU format modular sounds nothing short of massive! Especially when all drums are patched into the Moog-Style C111 mixer. Feed the mix back into itself and quickly witness the clean analog saturation get completely destroyed (in a harmonically satisfying kind of way)

The Corsynth drum modules are available now at Noisebug.

The DR-01 Bass Drum is the first of a new series of Corsynth modules dedicated to analog drum synthesis and it’s also the first module of this kind commercially available in MU format. Create a drum sounds from scratch using a modular synthesizer is always time and resourcing consuming. With the DR-01 you will save a lot of space, money and modules that can be used for other purposes. The DR-01 has all you need to create bass drums , toms a many other percussive sounds in just one single space. And thanks to the Tune CV input is even possible to use the DR-01 to create bass lines. Punchy techno drums, industrial drums, drum sounds of the firsts analog drum machines, FM sounds... With the DR-01 is really easy to get the sounds that you need at every moment. All the parameters in the module have been carefully chosen to be used in a drum synthesis context (envelope times, oscillator frequencies, oscillator waveform etc ). These are the DR-01 Bass Drum main features:
* A voltage controlled oscillator with dedicated CV input for tuning.
* A voltage controlled timbre circuit.
* A dedicated tune modulation envelope.
* An amplitude envelope with three different settings for the attack time.
It’s time to add drum sounds to your synth sequences! .

The DR-02 Snare Drum is the second module in the DR series dedicated to analog drum synthesis. This module is designed to synthesize electronic snare drum sounds of any kind. From the classic preset drum machines from the 70s to TR-XXX, electro snares, zaps... But thanks to its 12 knobs and 3 CV inputs the DR-02 Snare Drum can synthesize much more than snare drums, sounds like hit-hats, toms, cymbals , congas, FXs are also possible and even it can be used as an oscillator. The DR-02 is composed for two different sections , Head and Snare each of them with its own volume control. The Head section has two voltage controlled oscillators with a fixed frequency interval between them. One modulation envelope to modulate the oscillators tuning and one VCA with an AD envelope to control de decay of the snare head. The Snare section is composed by a noise generator , two voltage controlled filters connected in series ( one 12db resonant high pass filter and one 6db non- resonant low pass filter). One envelope to modulate the high pass filter cutoff frequency and one VCA with an AD envelope to control de decay of the snare.

The DR-03 Hi-Hats / Metal is the third module in the DR series dedicated to analog drum synthesis. It is designed to synthesize Hi-Hats and metal percussion like cowbells or cymbals and even FX. Three different voices are available at the same time Closed Hi-hat, Open Hi-hat and Metal plus a Hi-Hat mixed output .

Hi-Hats To synthesize a Hi-Hat there is a key element that defines the final result, the primary sound used to create it. The DR-03 has three possible sound sources , a white noise generator, a mix of six square wave oscillators and a mix of ring modulated square wave oscillators. These three sound sources, together with the VC Band Pass filter and the Low Pass Filter allow the DR-03 to create a wide range of hi-hat sounds. Another interesting feature is that the Open Hi-hat decay time is voltage controlled and it can be triggered independently or conditioned to the Closed Hi-hat. Metal The Metal sound is created using two ring modulated square wave oscillators and a VC Band Pass Filter. The frequency of one oscillator can be manually controlled and the other one has a fixed frequency. The variable oscillator can modulate the cutoff of the BPF to create metallic FM sounds.

#synthesizer #modularsynth #synth #mumodular #dotcom #corsynth #5u"

https://www.noisebug.net/