ESP32 D-50 Synthesizer - A Roland D50 CLONE with ESP32

video upload by László Róbert Kasza

"An ESP32-powered hardware synthesizer project based on the classic Roland D-50 architecture.
https://www.facebook.com/profile.php?..."

Polyphonic D50 sampler synthesizer with ESP32 in YAMAHA DX21 Hardwer :)
video upload by László Róbert Kasza

"Unfortunately, the motherboard of my dx21 synth is broken beyond repair. So she got new electronics. I have uploaded a code I wrote using Roland D50 sound samples.
So what everyone feared has come true. The Yamaha Roland DX-D50-21 :)

Abilities:
-4 d50samples
-TVA Envelope
Course, Fine, Keyfollow
-The sampling frequency is 48000Hz.
Signal on 16 bits or more
-The device is polyphonic up to 10 tones
2 LFO controlled 2 parametric EQ
-Upper Lower Choruse
-Reverb engine
-Roland D50sysex compatibility...
-hd44780 compatible LCD Display (Not implement more)
-https://data.dynareg.se/breadandbutte...
(If we are bored, we can listen to internet radio on it.)

https://github.com/kaszarobert1/ESP_D...
More FM firmware:
https://github.com/kaszarobert1/-ESP3...
Yamaha DX21 KeyMatrix Arduino Due Firmware:
https://github.com/kaszarobert1/yamah..."

Introducing the Pittsburgh Modular Lifeforms SV-2

video upload by Pittsburgh Modular Synthesizers

Pics and details via Perfect Circuit.

[You can find additional demos by Starsky Carr, BoBeats, and Molten Music Technology further below.]

Pittsburgh Modular Lifeforms SV-2
Lifeforms SV-2 from Pittsburgh Modular is a duophonic analog semi-modular keyboard synthesizer that honors classic East Coast subtractive architecture while packing a punch of flavorful twists afforded by modern technology. A full-blown revamp of the SV-1, it features updates to nearly every aspect of the instrument: new oscillator core, classic PGH filters updated with new character modes and overdrive stages, new spring reverb, new response curves and range modes on the ADSR envelopes, a custom 37-key keyboard with pitch-bend and mod wheels, and a redesigned interface with eighty-four patch points along the top. Moreover, a 24hp Eurorack expansion bay with three power headers sits alongside them, so external modules of your choosing can be dropped into the signal path at any point.

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Vaemi Introduces Synterra

video uploads by Vaemi

Playlist:
1. Synterra : Audio Demo : Vaemi
2. Synterra Nedir? : VAEMI’nin Yeni Enstrümanı #synth #generativemusic #sounddesign #synthesizer
3. Synterra : VAEMI’nin Yeni Generatif Enstrümanı : Tüm Özellikleri #Organic #NaturalPatterns #Plants

Click CC in the player controls for subtitles.

"We are delighted to announce Synterra, VAEMI’s new instrument, which many of you have been waiting for. We are truly excited.

Synterra is a unique device designed as a more comprehensive instrument than similar equipment created to date, capable of interacting with organic objects, living organisms, and different surfaces in its surroundings.

Synterra can use changes in the magnetic and electrical fields around it, liquid or solid organic materials, fruits, plants, fungi, trees, light, and the touch-sensitive area on its surface, allowing your own resistance to become part of the music and the patch.

Synterra also determines its initial position during startup by using the magnetic field of its environment as a reference. This allows the device to position itself according to its surroundings each time it is powered on and begin processing incoming signals based on this initial reference.

In addition to these features, the device offers 8 different scale options. Synterra converts signals received from living organisms or other sources into data. It then processes this data through probability and quantizer structures, creating an algorithmic arrangement that generates different notes at different times. In this way, the device establishes a generative synthesis structure within itself.

Synterra features 9 different synth presets. These presets include a variety of synthesis characters based on subtractive synthesis, wavetable, resonator, Karplus–Strong, drums, and noise.

The device can also be used practically without being connected to any living organism, as light and your own resistance can be incorporated into the circuit. In addition, a much wider variety of sensors can be added to the system through the clip cables and the additional sensor input.

Synterra can be powered by either batteries or USB. Battery operation allows you to use the device comfortably on nature walks, in outdoor spaces, and in creative environments outside the studio.

The onboard potentiometers allow you to adjust the output level of the internal sounds, as well as the amount and sensitivity values. This enables you to use the device comfortably across a broader range of applications and receive signals at more suitable levels from different living organisms or organic sources.

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sxc-1 default beat.

video upload by hijaq.

"had to try this out because it's only available in japan but don't get used to sxc videos lmao."

via Casio Japan:

SXC-1の使い方【01～10】

video uploads by CASIO Japan

Click CC for subtitles.

Some pics via eBay

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Hideaway Studio Elfin

Hideaway Studio · Introducing The New Family of Elfin Polysynths by Hideaway Studio...

Note the above demos and following description are from March 5, 2025. I spotted the Elfin in Hainbach's A Hundred Suns, posted below. There appears to be two synths, an Elfin-08: 8-Voice Functional Prototype Synthesizer, and an Elfin-04 Polysynth.

[pic from FEBRUARY 18, 2026 via https://hideawaystudio.net]

"Introducing Elfin-04, Hideaway Studio's Compact New 4-Voice Polysynth...

I have been working round the clock for weeks now on my dinky little 8-bit 4-Voice (4 x [2osc+1sub+LFO]) VA Poly Expander with 1960's style transformer-mixed output voicing and finally No's.000 thru 010 are born to the world and receiving very positive feedback from their new owners...... this 4-voice polysynth measuring just 16x12x3cm has full real-time control over her 32 parameters via simple midi ccs and 16 built-in patches.

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Meet OBSIDIAN by Vannes Devices

video upload by VannesDevices

"Jamming with the 303 sequencer and OBSIDIAN, just having fun!
#synthesizer #303 #roland #sequencer #obsidian"

OBSIDIAN - Short Demo's

Via Vannes Devices OBSIDIAN.

Forged from fast-cooling lava, this volcanic stone becomes a black mirror that, when used with purpose, awakens and channels your creative energy.

OBSIDIAN is a unique semi-modular analog synthesizer with its own characteristic sound. Its analog circuitry combines different worlds of synthesis techniques, opening space for creative sound design and composition.

Inside OBSIDIAN.

Oscillators
West-coast style oscillator section.
Waveshaper, wavefolder and cross-modulation.
1V/oct tracking across eight octaves.
Sub-oscillator for thick foundations.

Voltage Controlled Filter
Two-channel mixer with optional external inputs.
Multi-mode: low-pass, high-pass and band-pass.
Continuous modulation between filter modes.
Voltage controlled mode, cutoff and resonance (peak).
Bipolar envelope modulation.
Voltage controlled amplifier with CV inputs.

Voltage Controlled Envelope Generators
ADSR envelope.
AD(R) envelope.
Gate and velocity input per envelope.
Voltage controlled slew rates and levels.
Inverted output.

LFO · Delay
LFO
Saw, ramp, sine, pulse and random outputs.
Frequency range from 0.01 Hz up to 100 Hz.
Clock syncable to tap tempo, external (eurorack) clock and MIDI clock.
Rhythmical clock divisions (¼, ⅓, ½, ¾, 1/16).
TAPE-STYLE DIGITAL DELAY
Voltage controlled time and feedback.
Clock syncable to tap tempo, external (eurorack) clock and MIDI clock.
Rhythmical clock divisions (¼, ⅓, ½, ¾, 1/16).

Sequencer
West-coast style five-step sequencer.
Selectable 4 or 5 step sequence.
External and manual sequence reset.
Clock syncable to tap tempo, external (eurorack) clock and MIDI clock.
Patchable to oscillators, filter and any CV destination.

SINTH 2 - Polska Myśl Techniczna

video upload by muzykujkropkacom

Click CC in the player once it starts for subtitles. Some initial specs and pics follow. Note it appears a desktop version is in the works as well based on the last image below.

Specs:

60 voice polyphony
5 sample oscillators
3GB of waveforms
Noise oscillator
4 Lfo generators
2 Envelopes
18db LPF, BPF, HPF
Motion recording for all the knobs!
FX Dsp
4 oled displays
16 steps polyphonic sequencer
120 potentiometers
9 encoders
36 butons
1920 cells for presets
XLR Symmetrical audio output
Stereo audio input to FX Processor
Solid wood casing
Fatar dynamic keyboard..

https://sinth2.com

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Arturia Introduces AstroLab 61 Silver

"AstroLab 61 Silver is the same avant-garde stage keyboard in a premium silver finish. Perfect for musicians who want AstroLab’s powerful sounds, expressive controls and seamless studio-to-stage ecosystem with a distinctive, performance-ready look."

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He turned his synth into a sampler - GuitarML Adruino Based DIY "TouchedOut Synth"

video upload by GuitarML

"*OPEN SOURCE* https://github.com/GuitarML/TouchedOu...

Demo of the Touched Out Sampler, which is a mod to my TouchedOut Synth. It adds a MAX4466 microphone to transform it into a chromatic sampler! The new code is open source under the 'sampler' branch of the TouchedOutSynth. The mod requires two 100uF capacitors and a 100 ohm resistor, along with the microphone. The Sampler is separate firmware, but repurposes the controls for recording and trimming samples, and looping."

Previously:

I Designed a Synth using Daisy and Arduino! KiCad PCB and Code Walkthrough
video upload by GuitarML

"Demo of my latest creation, a polyphonic touch synthesizer. Audio demo song, followed by overview of the synth, design process, Kicad PCB schematic and layout, and code walkthrough. I used the Arduino IDE with DaisyDuino to program the Daisy Seed along with MPR121 capacitive touch modules.

Now open source: https://github.com/GuitarML/TouchedOu...

0:00 - Intro Song
4:05 - TouchedOut Synth Overview and Controls
8:18 - Design prototypes
11:02 - Kicad PCB Schematic
12:56 - Kicad PCB Board Layout
16:43 - Code Walkthrough in Arduino IDE
25:20 - Outro

Patreon:
/ guitarml

Visit my website for more from GuitarML:
https://guitarml.com/"

Radiohead and Björk on a homemade synth

Roland x Minions

via Roland

"Coming Soon

Bring the Minions home for a brand-new playing experience with our latest keyboard drop.

Your new (banana) yellow practice sidekick is bursting with surprises, musical discovery and Minion-powered mischief.

Start Your Musical Journey with the Minions

Bello. A unique Minion collaboration model is joining the GO:KEYS series—perfect for jumping into your musical experience. Along with its iconic yellow color (banana) and illustrated graphics, GO:KEYS 3 Minion even lets you play the distinctive voices of Minions like Bob and Kevin. Plus, you’ll enjoy everything about GO:KEYS, an instrument that's easy to start on and grows with you as your skills develop."

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ellitone tap-ki - a percussive note midi controller

video upload by ellitone instruments

"now available at ellitone.com

The ellitone tap-ki is a ‘percussive note’ midi-controller that features 12 highly-sensitive “tap touch” wooden bars. Formally known as the KeyControl 2, the ellitone tap-ki found its true name and brings back all of the same functionality in a solid oak hardwood body.

tap-ki features 16 selectable musical scales from around the world. Inspired by hand-pan drums, these 16 musical scales each offer a different mood for your playing and exploration. The best thing about these selected musical scales is that it is impossible to hit a “wrong note”, No musical theory or piano playing ability is required to successfully enjoy this device. As seen in the demo video, the tap-ki can be played like a piano using single finger taps, or like a drum using both hands to trigger groups of multiple notes at once. The excellent velocity-tracking system allows the tap-ki to be played like a digital hand drum that responds to the smallest change in play pressure.

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New Analogue Solutions FILTOPIA Analogue Monosynth Incoming

"Fusebox X is an analogue monosynth with 3 note poly capabilities"

Priced £1,799.00

Update: additional pics and details added.

Filtopia will be a limited edition synth - we are only building 200 units.

Stereo analogue monosynth - with a 5 Multi-Mode filter Filterbank - to give glorious and unique filter sweeps!

USP - THE FILTER BANK
Filtopia’s key USP is a bank of 5 analogue filters wired in parallel. Glorious multi-band filter sweeps are possible. With some tweaking you can also get vowel types sounds.

5 filters doesn’t mean just 5 filters, by having offset filter-cutoff frequencies, with some high resonance levels, can mimic the way the human voice works. Something that can’t be done with a single filter.

Aside from the uniqueness of a multi-channel filter bank for filtering, Filtopia is fully loaded with VCOs, LFOs, EGs, etc.

Filterbank - 5 analogue multi-mode filters - superb multi-filter sweeps, and even vowel sounds!

3 VCOs - can be routed to some or many of the filters as dictated by the front panel.

5 VCFs - Multi-Mode - wired in parallel.

2 VCAs - one has Echo.

3 EGs - full ADSR.

2 LFOs.

Noise.

2 Sub-Osc.

MIDI to CV.

8 step CV sequencer.

Stereo Outs.

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Introducing GreenWaves™ by IdioTech™

video upload by Joe Edelmann

"Preorders are available at https://www.idiotechdevices.com.

IdioTech™ and GreenWaves™ are trademarks of Idio Tech LLC.
Design and concept © 2025 Idio Tech LLC. All rights reserved.

Inspired by the legendary Ondes Martenot, this instrument uses a continuous pitch control and pressure sensitive volume control to create sweeping glissandos and vocal-like expression. It also can act as a MIDI or CV controller for your favorite synths, and has wave-shaping, harmonizer and preset capabilities."

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Entomo- drone synth reissue

video upload by DecadeBridge

"I recently came across some stock for Entomo-, one of the first synths I created. This is a quick demo of some of the sounds it can create.

I have made these available again on Etsy for a limited time.

https://decadebridge.etsy.com/uk/list..."



"Entomo- is one of the first synths that I released. I recently came across some old stock and decide to reissue these.

Entomo- is a 6 oscillator drone synth that can be powered with a 9V source or a CV signal.

Entomo- creates a wide range of drone and noise sounds.
Activate the oscillators using the patch bay and included jumper wires.
Cross modulate signals to disrupt and dictate the sound. From drones to noise to rhythmic chatter and glitching.

https://youtu.be/SJWycjpQpFQ

Knob style and colour may vary depending on stock.
A connector for a 9 volt battery is included with Entomo-. Entomo- can also run off a 9V !!CENTRE POSITIVE!! WALL ADAPTOR.

Designed and built by hand in Cheshire England

To keep up to date with product demos, prototypes and competitions follow me here: www.instagram.com/decadebridge

www.decadebridge.com"

New EMW VPOLY-6X | Hands-On Demo & Sound Showcase

video upload by EMW Synthesizers

"EMW presents the VPOLY-6X, a new virtual analog synthesizer module designed to deliver inspiring sound with an intuitive workflow.

Featuring innovative technology, a clean and practical interface, and a powerful analog-style sound engine, the VPOLY-6X lets you focus on creating music instead of navigating complex menus.

Simple to use. Fast to program. Big, expressive sound.

Demo by ‪@MarcusPadrini‬"

New Ondioline modèle 56 Incoming

video upload by matrixsynth

via Ondioline

"We are proud to annonce the renew of this iconic early synth !

Our Ondioline prototype is running great since months and the first production unit should leave the workshop before winter.

We stay as close as possible to the original Georges Jenny design and philosophy.

Full analogue tube synth (12 in total) as stunning expressivity with suspended/wobbling keyboard and pressure sensitive keys !

Full specifications and price TBA

https://www.ondioline.fr/
https://www.instagram.com/ondioline.fr/"

See Georges Jenny, inventor of the Ondioline, demonstrating one in 1948 here.

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New M‑VAVE FM‑1 Mini FM Synthesizer

video uploads by M-VAVE

Playlist:

1. M-VAVE New Product Release--FM-1
2. M-VAVE FM-1 Sound Import Tutorial
3. M-VAVE FM-1 Firmware (V09) Feature Overview & Upgrade Installation Tutorial Synthesizer: FM-1

FM-1 Features:
● Built-in speaker: No external speakers needed, turn on and play instantly, your stage anytime, anywhere.
● Built-in arpeggio: Rich rhythmic layers, giving you endless possibilities for musical performance.
● Built-in sequencer: Supports saving 16 preset sequences.
● Built-in 6-band integrated effects chain.
● Built-in rechargeable lithium battery with power indicator: Ready to use anytime, anywhere – on the street, in a cafe, or in your bedroom.
● Built-in 145-parameter FM tone editing system: Supports importing original DX7 SysEx tone files, and batch loading of single tones and entire tone sets.
● Built-in sound source: This device features a built-in sound source (FM synthesizer engine) that emulates the classic Yamaha DX-7 FM synthesizer, fully replicating 6 operators and 32 algorithms.
● BT audio function: Wirelessly stream backing tracks from your mobile phone to the FM-1 for improvisation using the built-in speakers or headphones.
● 27-key silicone keyboard, covering two octaves, offering a supple touch and rapid rebound for a comfortable playing experience.
● 1.54-inch color display screen, providing real-time display of tone, parameters, and spectrum information.
● Backlit silicone buttons for silent operation and sensitive feedback.
● 7 sets of 360-degree rotary encoders for precise and intuitive control.
● 12 function keys for one-touch access to core functions.
● OCT± octave/transposition switch, covering the full range even on narrow keys.
● 3.5mm headphone jack with automatic speaker mute when headphones are plugged in, ensuring undisturbed creative work and immersive monitoring of every detail of the tone.
● 3.5mm MIDI input jack for supporting external MIDI device control.
● USB-C interface: USB Audio + USB MIDI composite device, automatically recognized upon connection to a computer.

user video:

M‑VAVE FM‑1 Review & Sound Demo – Fun Pocket FM Synth

video upload by dongchannel

"How does this under‑$70 FM synthesizer perform? Check out this video for a full feature walkthrough, sound demos, and my honest thoughts.

I first spotted the M‑VAVE FM‑1 at this year's Guangzhou Musical Instrument Fair, and picked one up shortly after for about 300 RMB (around $60). The packaging is minimal, the unit itself is compact (16×9 cm), yet it packs everything you'd need. Connectivity is surprisingly generous, with both wired and wireless MIDI and audio support – really well‑equipped for its size.

Inside, you get a 6‑operator FM engine, essentially a recreation of a classic 1980s Japanese synth. It comes with 128 preset sounds, plus an effects chain, a 16‑step sequencer, an arpeggiator, and deeper editing tools. Pair it with an external MIDI keyboard and the playability expands even further.

Are there minor software quirks? Sure. But at this price, they're hardly worth mentioning. Compared to other portable sound gadgets in its class, the FM‑1 is just plain fun. And for the money, the build quality and feature set far exceeded my expectations."

NOISFERATU - Generative texture synthesizer

video upload by scaepe

via scaepe

"NOISFERATU is a compact handheld generative texture synthesizer. 45 algorithms across 5 banks produce crackling textures, noisy scapes, evolving drones, harmonic blips and digital chaos. Shaped but never fully controlled by four knobs.

They generate endlessly evolving textures, tones and rhythmic patterns. Designed to surprise, resist repetition and never quite settle. Dial in a crackling drone, a stuttering melody, or pure digital chaos.

The front and back panel can be flipped.

It uses and abuses creative approaches like generative wavetables, BitBend address manipulation, probability gates, bitwise logic operations and wild combinations of these.

Powered via USB-C.

Firmware and schematics are released open source."

Akai Introduces MPC Key 37 G2 & MPC One G2

video uploads by Akai Professional

"Two ways to create. One MPC mindset. https://inmusic.to/5n8b3m62

The MPC One G2 and MPC Key 37 G2 introduce a new generation of standalone MPCs built around the same core idea: faster workflows and bigger creative potential. Both devices are powered by MPC3 and a new G2 eight-core processor, delivering significantly increased performance for larger sessions, faster load times, expanded track counts, and deeper plugin usage.

For beatmakers and producers who want the classic MPC feel in a compact desktop unit, MPC One G2 delivers next generation standalone power, MPC3’s modern track and arrangement tools, and USB-C hybrid connectivity—making it the most capable and future proof entry point into the MPC standalone ecosystem. https://inmusic.to/2p87e2nv

For producers and players who write on keys but want the speed and focus of an MPC workflow, MPC Key 37 G2 delivers next-generation standalone power, MPC3’s modern track and arrangement tools, and one-cable USB-C studio connectivity in a compact production keyboard that eliminates the laptop dependency. https://inmusic.to/yckvp6ef

Together, they represent two approaches to the same creative system. Whether you start on pads or keys both deliver a complete, modern MPC experience built to create, arrange, and finish music in one place, with the flexibility to plug into your studio setup when needed."

MPC One G2 vs MPC Key 37 G2 // & OS 3.9’s Wild New Oscillators // MPC G2 Review

video upload by loopop

TIMELINE: 0:00 Intro 1:35 Layout 2:00 Pads 2:25 Colorway 2:45 8 core CPU 3:15 RAM 3:35 Storage 4:05 I/O 4:25 USB C news 5:05 Pro pack? 5:40 OS 3.9 Features 6:00 Oscillators 6:20 Osc expansion 7:20 Osc overview 8:15 Osc in a pad 8:35 Osc layers 8:55 Osc types 10:55 FM/RM 12:50 Wavetables 13:30 User waves 13:50 Mod matrix 15:00 Arranger news 16:10 Insert clip row 16:30 Misc new 16:50 Pros & cons 19:30 G2 One vs 37 21:35 Outro

Pics

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Meet Acid Drip - A DIY Bassline Synth & Drum Machine

video upload by Marcus Dunn

"Check out the GitHub Repo if you are interested in building your own

GitHub - https://github.com/lonesoulsurfer/Aci...

Instructables - Coming soon!"

Note: Acid Drip is based on the BadAss basS Synth and DrumKid featured further below.

"An RP2040-based acid bassline synthesizer and drum machine built on the Mozzi audio library. Two instruments in one device, a 16-step acid sequencer and a 16-pattern drum groove box running simultaneously on dual cores with a 320×240 ILI9341 TFT display and 16 Cherry MX pads.

NOTE: the images of the synth are V1. V2 is what I hve provided in this repo and looks a littke different (extra pot for mix added)"


Open Source Credits: Acid Drip is based on the BadAss basS Synth and DrumKid:

Acid synthesis engine adapted from Badass Bass from 10 years ago:


BadAss basS Synth video upload by Tschibo00

"this is the demo of my DIY Arduino-based synth with built-in sequencer. Code+schematics can be found on https://github.com/Tschibo00/BadAssba..."

Drum engine ported from DrumKid by Matt Bradshaw:


Drumkid Review & Demo // Lo-fi Drum Machine video upload by Saturday Music Machines from 2023

"Drumkid is a lo-fi aleatoric (an element of chance) drum machine with MIDI. It generates rhythms using random numbers. It’s designed to be used for both live performance and recording, with controls that allow organic transitions between rhythms and fills."

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