Pollard Industries Syndrum Twin Electronic Drum Synthesizer SN 1339

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

via this eBay listing

Additional Tone Tweakers Listings

"This unit was meticulously refurbished and is working perfectly, so buy with confidence.

We paid our tech for approximately 8 hours of skilled labor plus parts to properly overhaul this unit so it would work perfectly for its next owner and so that it will hopefully outlast others. This work included the following:

Disassembly and cleaning
Cleaned all jacks
Replaced capacitors
Removed, cleaned and lubricated slide potentiometers

One interesting thing we noticed (that most sellers wouldnt have bothered to mention) is that there are 2 different types of slide pots used in this particular unit - one type feels a bit tighter than the other and has different colored shafts. We suspect this was how it left the factory as the pot types used are identical in both the upper and lower synth sections. This unit works great and sounds amazing and should make its next owner very happy.

Each of the 2 channels of the Syndrum Twin consists of an identical synthesizer with its own trigger input and audio output. Triggers can be sent from various drum machines, MIDI to CV converters, or drum pads. Audio signals can be used as well - for best results, we would recommend using a click or very short percussive sounds (like a rimshot).

Invented by Joe Pollard and Mark Barton in 1976, this drum synthesizer found its way onto popular records by The Cars, Yellow Magic Orchestra, Sparks and Joy Division, as well as many disco hits, including “Ring My Bell” by Anita Ward, “Knock on Wood” by Amii Stewart, and 'The Second Time Around' by Shalamar. A must for anyone into drum synths, or just those who love a good pew pew sound!"

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Fingerlab Introduces BloopMachine - Acid Bassline

video upload by Fingerlab



"BloopMachine is a monophonic synth-sequencer built for acid lines, glitchy textures and generative electronic music. Inspired by the sound worlds of Aphex Twin, Autechre and Morton Subotnick, it behaves like a TB-303 pushed way past the edge: squelchy, alive and gloriously unpredictable.

Get it now for free on the App Store:
https://apps.apple.com/us/app/bloopma...

At its heart is a wavetable synth with a resonant filter, driven by a deep step sequencer that can automate every parameter. Lean into the machine's love of chaos: the Mutate function reshapes your entire patch in one tap, turning simple sequences into organic, ever-shifting patterns that always stay musical.

Shape your sound with a 5-effect FX section: Ring Modulator, Distortion, Chorus, Delay and Reverb, and sequence or mutate those parameters too, for movement and grit that evolves bar after bar.

Build full tracks with 48 patterns and a Song mode that chains them into a timeline. Save your favourite machines as presets, then capture the result with real-time audio recording.

Run it standalone or as an AUv3 plugin inside your favourite host, on iPhone, iPad and Mac.

BloopMachine is free to download and explore. Unlock the full version with a single in-app purchase to use the complete FX section, access all 48 patterns, build tracks in Song mode, save and manage your own presets, export your music with real-time recording, and enable Undo."

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Old meets New FR777 (no talking)

video upload by zafrosoundz

"This was more of an experiment rather than a finished song, I'm basically just noodling between the two. New 777 is doing the Bass part and the Old 777 is backing it up. Their tones are different and seem to compliment each other. There is some processing through the MC707, sustain effect on the new and chorus on the old, both with a bit of eq reverb and delay as well. I'm just experimenting now with the raw sound of the machines, so stay tuned!"

https://future-retro.com/

Your Drum Machine Already Has a Sequencer. Here’s Why to Use Another One

video upload by OXI Instruments

"Most drum machines come with a capable sequencer built in: probability, micro-timing, ratchets, song mode. So why add another one? Because once there is more than one instrument on the desk, every machine brings its own workflow, its own menus and its own way of thinking. Patterns get scattered across different boxes, projects are hard to recall, and the full groove is never visible in one place.

This video covers five reasons to move the writing to an external sequencer and let the drum machines do what they do best: sound great. With the OXI One MKII at the centre, every instrument is written the same way, the whole groove is visible at once, and the patterns stay with you, whatever hardware is connected.

00:00 Introduction
00:45 One way of writing music
02:30 Multitrack mode
05:07 One brain
05:38 Adding features to your instruments
07:22 Creating new kits with different instruments
08:20 Own your patterns
08:45 Conclusions"

Learn to creatively use dynamics processing in Eurorack // DYN by Timo Rozendal & Surreal Machines

video upload by DivKid

"In this video we'll be exploring dynamics processing, learning about functions that are typically a music production and studio tool and applying them to Eurorack sound shaping and getting creative within a modular environment.

Dyn is a new module from Timo Rozendal made in collaboration with Surreal Machines with DSP based on their plug in 'Crack'. It's a 14HP stereo noise gate, transient designer, maximizer, limiter and clipper. There's lots of hands on control and easy to assign CV control too."

via Perfect Circuit

Timo Rozendal Dyn
Dyn from Timo Rozendal is a stereo transient shaper that's exceptional at creating hard hitting percussion or dialing back overly aggressive transients in your mix. It includes a suite of dynamics processing tools based on Surreal Machine's Crack plugin and optimized for drum sounds. A transient shaper is a specialized kind of limiter with an ultra fast attack stage envelope that works primarily on hard spikes in volume such as the initial impact of a stick hitting a drum.The large attack and sustain knobs provide the core parameter adjustments on Dyn. Lower the attack time to create sharp hits that cut through the mix, or increase it to smooth out harsh transitions. Adjust sustain to control the body of the hit post-transient, either making it fuller or tighter. Use the noise gate to reduce the level of quieter sounds between hits, crank the maximizer to push the overall level, and adjust the limiter to set the peak. Blend in your dry signal with the processed sound for parallel processing of your sounds. At the end of the chain, a clipper controls the final output level. Route an external CV source to any of the main parameters to add additional automation. Dyn from Timo Rozendal perfectly pairs with your drum voices or samples, particularly when you need them to stand out in the mix.

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Farfisa Polychrome – A short demonstration

video upload by melodikakofoniko

"Farfisa Polychrome – A short demonstration (with added reverb).

My rarest (and most awesome) synth must be the Farfisa Polychrome. It's a thoroughly beautiful Italian string machine from the late 1970s with four independent sections, a BBD chorus, and a great phaser effect. It's kind of similar to the ARP Quadra (but without a mono section—everything here is purely divide-down based). It's similar in size to the Korg Trident or Elka Synthex (HUGE!) but even heavier! It's got a really otherworldly analog vocal chorus section that sounds unique and beautiful, especially when combined with the other sections.

The keybed has a really nice mechanical aftertouch mechanism, similar in construction to the one found in the Yamaha CS series (though this one works with a magnet and a Hall sensor). My Farfisa collection also includes the Soundmaker and the Synthorchestra—Farfisa's earlier but similarly unique and cool machines with a distinctive 1970s sound (compared to the Polychrome, which sounds quite different)."

You can find additional posts featuring the Farfisa Polychrome here.

Bent505 Circuit-bent 80s Drum Machine VST/AU

video uploads by atnr

Playlist:

1. Bent505 Circuit-bent 80s Drum Machine VST/AU
2. Experimental Beat w/ Bent 505, OP-1 field, and Modular Synth | Renew 2026-09-10 by atnr
3. Circuit-Bent Drum VST, OP-1 field, YAMAHA CS01 Electronica | Rest and Drop 2026-09-09 by atnr [previously posted]

"Bent 505 is a 16-part rhythm sampler featuring sounds reminiscent of 80s drum machines.

Control pitch, bit depth, sample rate, comb filter, and delay for each part to design everything from classic drum sounds to raw lo-fi and metallic tones.

Unpredictable sonic variations via Random, Jitter, and Destroy, plus MIDI note reassignment and 16 individual outputs.

Bent 505 Product Website
https://store.atnr.net/bent-505/?lang=en"

"Bent 505 is a 16-part rhythm sampler featuring sounds reminiscent of 80s drum machines. Control pitch, bit depth, sample rate, comb filter, and delay for each part to design everything from classic drum sounds to raw lo-fi and metallic tones. Unpredictable sonic variations via Random, Jitter, and Destroy, plus MIDI note reassignment and 16 individual outputs.

Key Features

Editable 80s Sound Samples

16 sounds reminiscent of 80s drum machines
Detailed editing of each of the 16 parts
Flexible MIDI note assignment
Lo-Fi Effects

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Live at Home II (Elektron Digitone // MFB Tanzbar // Roland S1 // Teenage Engineering KO Sidekick)

video upload by 2-Minute Warning

"It's been almost a year since I last used my Elektron Digitone. The knobs had gradually become sticky, making the instrument pretty unpleasant to use. Since this seems to be an issue other people have experienced too (and I've had similar problems with other gear), I eventually decided to buy replacement knobs and swap them myself.

And honestly, this machine is too good to stay on the shelf!

To celebrate its return, here's a second "Live at Home" session: a 14-minute live set built mainly around patterns I recorded on the Digitone before I stopped using it.

The setup:
Elektron Digitone : the heart of the setup, sequencing the Roland S-1 and sending program changes to switch its sounds throughout the set.
Roland S-1 : mainly handling the bass.
MFB Tanzbär : adding some extra analog drums, using its own internal sequencer.
Teenage Engineering KO Sidekick : processing the Tanzbär (Channel 1) and the Digitone (Channel 2), with onboard effects for breaks, transitions, and a bit of hands-on sound shaping.

The Digitone acts as the master clock, with MIDI running from the Digitone to the S-1 and then to the Tanzbär. While the Digitone sequences the S-1, the Tanzbär keeps its own patterns running in sync with the rest of the setup.

No elaborate concept this time, just a chance to revisit some old patterns, bring the Digitone back into the mix, and see where the machines take me.

As always, the performance was recorded in a single take. I mixed and mastered the individual tracks afterwards in Ableton Live, but the musical performance itself wasn't edited or fixed.

00:00 Track 01 01:21 Track 02 03:04 Track 03 05:06 Track 04 06:26 Track 05 07:55 Track 06 09:07 Track 07 10:37 Track 08 12:28 Track 09 12:52 Track 10"

Korg EPS-1 – Deep & Powerful Analog Strings Sounds | Rare Vintage Synthesizer

video upload by RetroSound

"Discover the Korg EPS-1, a rare and often overlooked analog string synthesizer from the early 1980s. In this video, I explore its massive, deep and atmospheric string sounds and show why the EPS-1 deserves more attention among vintage analog string machines.

The Korg EPS-1 appeared on the market toward the end of the development of classic analog string synthesizers. While instruments from brands such as Solina, ARP, Roland and Korg are better known today, the EPS-1 remains relatively uncommon and can be difficult to find.

What makes the Korg EPS-1 particularly interesting is its powerful analog string character. The sounds can be incredibly deep, warm, rich and wide, with that unmistakable vintage analog texture associated with classic string synthesizers of the 1970s and early 1980s.

In my opinion, the EPS-1 produces some of the deepest and most impressive analog string sounds of its era. This video focuses on the raw sound of the instrument, its vintage character and the unique atmosphere it can create.

If you are interested in vintage synthesizers, analog string machines, rare Korg synthesizers, 1970s and 1980s analog keyboards, or classic synth sounds, the Korg EPS-1 is definitely an instrument worth discovering."

0:06 Demo Strings
1:51 Demo Track


Website ► https://retrosound72.wixsite.com/home

FREEDOM by Davide Micheli

video upload by Davide Micheli

You can find an English translation of the following video description further below.

"Freedom è un brano di musica elettronica prodotto da Davide Micheli utilizzando sintetizzatori elettronici tra cui alcuni Italiani moderni come il 'GRPA4', ma anche vintage anni 80 come 'Elka Twin61' e 'CRB Diamond 910 Gold M'. Altri sintetizzatori utilizzati sono il 'Moog Voyager XL', il 'Waldrof Quantum', e per ultimo 'Oberheim OB-X8'. La Drum Machine è una Drum degli anni 80 molto famosa ai sui tempi la 'Dynacord P20' 8-Bit Drum Machine.

CLICK FOR MORE »

This Tiny Synthesizer Runs On Pure Light | Solarix Demo

video upload by Sid Rockett

"Introducing Solarix a tiny, self-powered synthesizer featuring an integrated solar cell that runs completely on light. No batteries, no USB power, and no external power supply needed.

In this video, we test Solarix to see how ambient light and shadows dynamically alter its pitch, rhythm, and sonic textures. As light intensity changes, the circuit reacts in real time, turning photons into raw analog chirps, evolving drones, and rhythmic glitches.

⏱️ Chapters:
0:00 - Intro: Meet Solarix
4:10 - Solarix Sound Demo & Light Modulation
6:25 - Running Solarix through Reverb & Delay
3:00 - Outro

👇 Gear & Setup:
Synth: Solarix Solar-Powered Synthesizer
Audio Recorder: [Insert Recorder Name]
Effects Used: [Insert Reverb/Delay Pedal or FX, if any]


✌️ I’m Sid Rockett, a designer and explorer of experimental synthesizers and custom noise-machines.

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Diosynth Live: A New Companion App for Diosynth

video upload by ASM Ashun Sound Machines

"Diosynth Live is now available for iOS and Android, bringing fast access to your favorite patches, system settings, and MIDI settings directly on your mobile phone.

Find the Diosynth Live app on the Apple App Store and Google Play Store.

0:00 intro
0:28 App organization
1:00 requirements
1:25 connecting to the app
1:40 USB connection
2:17 Bluetooth connection
3:00 Favorites
3:45 Setup tab

Learn more at ashunsoundmachines.com

#Windsynth #EWI #diosynthlive #diosynth #asm #Ashunsoundmachines"

Press release with additional details:

CLICK FOR MORE »

What If The Machines? A sound installation for modular synthesizers

video upload by Insect O.

"A sound installation for modular synthesizers, inspired by Tod Barton's Krell Patch and extended with a variety of voices.

An autonomous system that generates sound on its own. Human removed. No direct intervention, no conventional performance. Only the rules defined by the patch remain, shaping an evolving sonic landscape that unfolds beyond human control.

What happens when machines are left to create their own sound worlds? Where does composition begin, and where does it end? What role does the human play in a composition that emerges from a system designed to operate independently?

What is analog? What is digital? And where do the boundaries between the two dissolve?

What if the Machines? explores the relationship between human intention, algorithmic structures, and autonomous sound generation, questioning the role of the composer in a world where machines become the performers.

Installation held at Felicità Festival Kühlhaus Görlitz 2026"

Website: https://www.insect-o.de

GODWIN CD2 - 1980s - The First Ever Demo Of Rare Apparatus

video upload by Vintage Audio Institute Italia

Note this appears to be the first post to feature the GODWIN CD2.

00:00 Setting Up
00:41 Introduction
01:28 UPPER MANUAL : organ tabs and polyphonic presets
04:13 Solo Synth
05:07 Debunking the Mystery
06:19 Drum Machine
08:26 Three Quick Improvisations
09:47 Lower Manual : organ tabs, solo synth routing and arpeggiator
11:18 Musical Interlude
12:42 Bonus Musical Interlude

"A fresh video entry in the category 'Rare as a unicorn on stilts' - this mystifying auto-accompaniment machine organ and synth from Italys' Godwin is the only one we've ever encountered.

These type of sound generators were controlled by foot pedals and electronic accordions, generally in the hands of one-man-bands providing light entertainment in places where people congregated, imbibed alcoholic liquids and sometimes even got up and danced.
Remember those?
Ski resorts, beach clubs, dance halls, restaurants and hotels, for drinks or dinner.

The CD2 (we're not sure what the abbreviation actually stands for but we're guessing Computer Drums) is actually more than sequenced bass lines and chords though.
It's equipped with 2 separate preset- and organ sections and even a monophonic preset synth and the whole Shebang, unlike on many keyboards at the time, can be engaged simultaneously for massively wide and deep soundscapes.
All those sounds need lots of circuitry safely housed in a military grade flight case.
The GODWIN CD2 is well chunky, clocking in at a whopping 24 kilos.

The video explains most its specifications and includes a bit of history too but a summarisation would go something like this :

1. Sample Based Drum Machine with 16 Rhythms and 16 Drum Fills
2. Auto-Comp section with bass, chords and arpeggiator with 2 sounds
3. 2 x Organ Sections with 15 tabs total
4. 7 Polyphonic Preset Sounds
5. 7 Monophonic Synth Sounds
6. Various Chorus and Reverb Effects

If you're into rare Italian synths and drum machines you can subscribe to our channel and please check out our other videos of rare gems, but you might also enjoy the V.A.I. website, a photo book and encyclopedia Italian Vintage Synths and Drum Machines:

https://www.vintageaudioinstitute.com/"

Elektron Monomachine Emulation | Factory Patterns Demo

video upload by Autodafe

Part 1 here

"What if you could run an Elektron Monomachine inside your computer? 👀

In this video I’m testing Gearmulator MM, an emulation of the legendary Elektron Monomachine developed by Joe Landers as a fork of the Gearmulator project.

No talking — just the interface, some factory patterns and the sound of the emulation in action. 🎧

⚙️ Gearmulator uses low-level hardware emulation to run the original firmware rather than simply recreating the synth behaviour.

Joe Landers’ gearmulator-md-mm fork adds support for Elektron Monomachine and Machinedrum.

CLICK FOR MORE »

Clave Euclidian Drum Machine by Oficina de Sonido

video upload by Oficina de Sonido

CLAVE. Euclidean Drum Machine - Quick Start

video upload by Oficina de Sonido

via Kickstarter

"Clave, Ecuclidean Drum Machine lets you intuitively play rhythmic patterns that complement and syncopate with one another. Prepare your compositions across 16 steps and 8 sample tracks by saving different versions or parts, and refine your performance with the included effects and filter. All in a single, lightweight, and portable unit. It comes with 5 factory-installed drum kits and has space for you to add your own.

It’s based on what’s known as Euclidean Rhythms, which describes the distribution of beat intervals. It sounds complicated, but that’s exactly what makes the system simple. The best part is that you’re not limited to using the automatic distribution system, you can also program it step-by-step, 'XOX' just like any other drum machine.

In our musical quest to create a hybrid sound that blends electronic music with organic rhythms, we have collaborated with percussionists, designed our own synths and drum machines, programmed digital instruments, and even built electromechanical percussions!

This campaign is to introduce our new drum machine to the world; we already have a couple of working prototypes. We need your support to be able to produce the first batch of machines. This is already our fourth project on Kickstarter—we hope we can crowdfund this one, too!"

You can find the user manual here.

P.S. They reached their Kickstarter goal in 24 under hours!

LeviaSynth Deeper function ASM - Knobcon 2026

video upload by sonicstate

"Ken from ASM gave us a look at LeviaSynth, focussing on some of the nifty ways to controll all that synthesis - 16 voices with 8 oscillators, 13 envelopes per voice, 5 LFOs. Using the Bias controls, and the copy/paste settings between Oscillators for efficient navigation of this behemoth.

The signal path includes the digital filters from Hydrasynth, plus analog gain, analog saturation and an analog filter section. It supports upper and lower layers, key splits and crossfeeds, and the keyboard version includes a refined poly-touch keybed.

Ken shows us stereo mode by splitting eight analog filters left and eight right, with detuning available per side. Stereo behaviour can apply to carriers, modulation, or both. The engine includes 144 algorithms, custom algorithms and smooth morphing between algorithms, with FM, phase distortion, pulse-width modulation and phase modulation available in combination.

Pricing is around $2,499 for the keyboard and $1,999 for the desktop, with dealer pricing to confirm."

ASM Leviasynth - Sounds Only - Knobcon 2026

video upload by sonicstate

"Jim from Earmonkey Music sits down with the *ASM Leviasynth *at the Knobcon 2026 show from last week. We have him to thank for all of these videos from the show.

The Leviasynth is Ashun Sound Machines flagship synthesizer, with 16 voices, each with twin filters, (analog and digital), 8 oscillator per voice, 13 envelopes, 5 LFOs plus FX engine with multiple FX. Contolled by a polyphonic Aftertouch keybed and a ribbon controller."

Monomodule -1.0.1-Beta (Elektron Monomachine emulator)

video upload by Ticco Ross

"Another different emulator. It emulates the sound engine of one monophonic voice per track. All the various machines and effects featured in the Monomachine are present.
Private Beta. Soon in your DAW of choice.
The only file needed is the original Elektron_SFX6-60_OS1.32B.syx you can get @ Elektrons official web"

From the developer: "I'm the developer of this, it is currently only released in the form of a private, invite-only beta, but the full public release coming next week will be free and open source."

Build Your Own Audio Plugins, No Code Required, With Amorph AI Driven Plugin Platform

Build Your Own Audio Plugins, No Code (Amorph v1 Beta) video upload by Artists in DSP

"Amorph is a free audio plugin. You build, play, and share your own tools inside the DAW — the sound, the knobs, and the code sit on your computer.

This is the full how-to. Install. The window. Three ways to build. Remote. Lock. Share.

A patch can be an instrument, an effect, or a MIDI processor.

Download Amorph v1 Beta:
https://artistsindsp.gumroad.com/l/am...

Getting started:
https://artistsindsp.com/get-started-..."

Modular Town : a synth hidden in a town (Amorph)

video upload by Bungle Society

"Modular Town — a synthesizer town, drawn by hand.

Modular Town is a single Amorph instrument: a hand-drawn village you scroll through, where every knob, step-sequencer and jack is mounted on a building facade wired by hand, just like real hardware. 🏭 Filter (Cutoff/Resonance) on the factoryVCO1 / VCO2 on the vending machinesDetune and Attack/Decay/Release tucked into the houses🥁 A 16-step drum machine (Drums Volume, Accent, Drive) running through its own sequencer🍜 Ramen Bass Shop, a mono bass synth with its own 16-step piano roll, playable live or sequenced. A day/night cycle you flip from a shop sign. Delay (Time/Feedback/Mix) on a canal-side wall. A full patch panel route LFO, ENV and random modulation across the whole village with real cables✨ Reverb, aged-paper texture and film grain for a sketchbook feel"

CLICK FOR MORE »

ALIAS the sound of our childhood (Tape and Sampler emulation AU/VST3 macOS/Windows)

video upload by orph

From the makers of MONOCHORD

"ALIAS is a tape & sampler plugin — 4 tape machines, 4 vintage samplers, 10 noise floors from reel-to-reel to VHS, vinyl at 33 and 45, uncorrected CD errors, generation loss and 4 to 16-bit resolution. Give any sound the vintage LoFi character of a medium: drift, flutter, hiss, dropouts, crackle, skips.

Buy here: https://www.orph.audio/alias

FORMATS
Standalone · VST3 · AU
macOS 10.13+ · Windows 10 / 11
Universal · Apple Silicon + Intel
64-bit only

AUDIO
32-bit float internal
44.1–192 kHz
Speed 0.5× / 2× · wow · flutter · jitter · dropout

MEDIA MODELS
4 tape machines · 3 modes each
4 vintage samplers · colour and edge modes
10 noise floors · reel-to-reel · cassette · VHS · Beta
Vinyl · 33 / 45 RPM · wobble · crackle
CD error engine with concealment
Generation loss · 4–16-bit resolution
3 reverb modes · stereo width · mono"