"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.
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
"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."
"So after seeing Author and Punisher live earlier this year, I felt inspired to build my own drone machine.
These controllers consists of a 2lbs aluminum rod attached to a optical rotary encoder, while sitting atop thrust ball bearings. This encoder is then wired to an Ardunio Uno R3 measuring the RPM value along with it's rotational direction. I then used that data to control a synth patch I made in Max Msp 9 using the abl.drift and abl.roar objects along with two DMX controlled light panels using the Beam max package.
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You can find more at:
zackberwick.com
https://causticclouds.bandcamp.com/"
"Bought this 27 years ago from the keyboardist, Gary Hull, who played keyboard on 2 Montrose albums and also toured with him 1990-94. Gary also modified this Oberheim Four voice for Montrose to add sequencer functions. This Oberheim has 4 great sounding late 70's SEM Units and 2 later model Sequencer modules that are quantized, and output 4 channels to the 4 SEMs. A remote keyboard controlled by the Keyboard Module allows spilts and 4 note polyphony and many options for control. A programmed Expressionist MIDI to CV interface is included so the four voice is also controllable polyphonically over MIDI. -- The Four SEMs have been calibrated tuned and checked for complete noise free operation in 2026. The keyboard has been leveled and bushings replaced and plays perfectly. In 2026 the power module and output module were restored by Synth Smith, an analog repair specialist with over 30 years working on analog synths. I did not change much from what Montrose had done to this synthesizer. He was well known for his customization skills. I did add VCF controls and pots for all the SEMs so you can control from remote LFO's. The Programmer has never been connected in the Oberheim since I have owned it. In 2026 the Programmer battery was replaced and testing revealed it does work, but is not wired, and wiring it would be a lot of new wiring.
INCLUDES: Oberheim FVS-1 in Custom Metal Case 27.5 wide, 23.75 High, 5 deep(inches) 49 Key Keyboard in Custom Metal Case 2 keyboard cables, power cable, Manual and Notes MIDI to CV Rack Convertor Expressionist Programmed ($650 refund if not needed) Hard Shell Pro Road Case for Main Unit
SHIPPING: Only for Sale in North America due to size and weight $500 Flat Fee for Shipping 3 Boxes, refund if less Shipped Freight fully insured with tracking Freight company will schedule delivery to your house Box 1 - Main Unit 68 pounds 33 X 30 X 13 (Inches) — 2 smaller boxes Shipped Fed Ex Ground Box 2 - Keyboard 19 pounds 36 X 16 X 8 Box 3 - 18 pounds MIDI to CV, Manuals, Cables, Misc. 24 X 17 X 8"
"The good folks behind Expert Sleepers hired me to make a video showing the Disting NT doing something interesting - but what that was, was up to me. I figured the NT should be able to power an entire small live system, replacing a boatload of modules in one. And I thought about how James Holden blends computers & analogue filters in his work. And so I built a live system that does just that. Here's it working, how it works, the challenges I had, and the solutions. NOTE: YOU CAN DOWNLOAD THIS DISTING NT PATCH BELOW FOR FREE"
"A pre-owned Bastl Instruments Microgranny Monolith in very good condition. It comes with original packaging and accessories.
Manufacturer's description
Granny’s back with a brand new lid: our classic desktop granular sampler gets a facelift, bringing her into the modern age with enough usability upgrades to last another lifetime, rehomed in sleek black PCB-material to help it look the part amongst the latest in the Bastl range.
The Microgranny 2.0 that you know and love is still there under the facelift: lo-fi sound full of character packed into a hands-on monophonic desktop sampler that is a joy to experiment with. Plug in your microSD card loaded with 8-bit samples, or record them live through the in-built mic or line input, and jump into play with 6 samples right under your fingers, or instantly recall up to 60 saved presets.
Playability is paramount
The two-tier menu lets you dart between editing grain size or warping the playback speed, and the new-look tactile knobs grant better control than the previous model. The hazy plastic case is gone, and the PCB case’s sharper text makes the modes under the new and improved buttons more enticing – delve into Randomized mode, Legato playback, or the Instant Loop function to extend the virtually limitless possibilities of the surface controls yet further.
MIDI Control? Yep: play specific grains with keys, control the CC values remotely, even clock-sync loops and grains. Take your Granny for a walk in the park with the battery power, or run it through a wired 9V supply."
"(Scroll down for English)
Balayages de fréquences sur le module Frequency Vault de Bard Synthesizers. (stéréo).
www (point) noirsynthetique (point) com
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Bard Synthesizers Frequency Vault frequency sweeps. (Stereo)
www (dot) noirsynthetique (dot) com"
Tube based module.
"Frequency Vault is a drone powerhouse, resonant EQ, quirky drum machine, spectral mixer - all in one! Five pure-tube resonant filters with no less than 15 vactrols inside!
Features ◯ 5 separately adjustable vacuum tube filters
◯ Pure triode Sallen-Key type filters with soft saturation and resonance
◯ Selectable between LP/BP modes on band 1
◯ Selectable between BP/HP modes on band 5
◯ Common Voltage control over cutoff frequencies
◯ Voltage controlled Cutoff Spread parameter
◯ Common input and Separate inputs for each filter
◯ Common resonance control and separate resonance control for each filter (PING)
"Originally sold within the Japanese domestic market and wired for 100v, this synth runs without issue on 120v USA power. There’s sparingly little wear on the enclosure, and the graphics are pristine.
The original shipping box, paperwork, and patch cables are included.
"This unit is available for sale - if you're interested just shoot us an email at : Vintage dot Audio dot Institute @ gmail.com
Normally we focus on Italian gear but this is such a great little machine we thought we'd venture out a little.
This is the first model Bohm Solist - a mega-early, analog auto-accompaniment unit and drum machine from West Germany.
Comparing the two Bohm Solist models - the S and the 78 - we realized that they're almost identical.
The only thing that's added to the next model are a few chord sounds and 4 added bass line variations.
You can watch our demonstration of the Solist 78 here : • Dr. Böhm Solist 78
The Solist machines are essential song-writing tools and offer some great, useful features : great drum sounds, chords and bass lines as well as an arpeggiator, all transposed by the control keyboard.
This video is not really a demonstration but a jam of sorts, with some help from external effects this unit sounds great and is a hoot to play.
Specifications :
The one-octave keyboard controller can only operate one finger at a time - it's not made to be played, but to indicate the desired key to the main, sound generating unit.
The major, minor and 7th and 9th chord options are engaged by pressing the grey side keys and the buttons on the right in tandem with the desired key.
Dr. Böhm named the auto-accompaniment section Böhmat - perhaps a mix of Böhm and Automat - and it has quite a lot going on considering for such an antique device:
1. A bass sound generator of bass lines spanning two bars.
2. 3 chord sounds with 6 rhythmic patterns
3. An arpeggiator figure and a Wah effect for the chords and arpeggiator.
4. Analog drum machine of 24 patterns that are mixable, mute options for most individual drum sounds.
The bass and chords rhythm patterns are unique to each rhythm engaged while the arpeggiator line is a single pattern for all.
The tempo of the Wah-Wah LFO effect follows the main tempo.
The drum section has 24 drum rhythm patterns that can all be played at the same time if one desires.
There are mute options for all but a few drums sounds, as well as a snare roll and a single, hard-wired drum fill.
If you're into rare, mostly 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/"
Restoring a Classic: BOSS DR-55 Foot Switch Jack Replacement
"The BOSS DR-55 is a staple of early 80s minimal wave and synth-pop, but its plastic jacks are often a point of failure after four decades."
The Issue
The unit arrived with a missing original foot switch jack, rendering remote Start/Stop operations impossible. To ensure a rugged and reliable fix, I decided to upgrade the component rather than searching for a rare vintage plastic replacement.
The Solution: Switchcraft 12A
I opted for a Switchcraft 12A 1/4" Mono Jack (Shorting/Tip-Shunt). This is a classic choice for vintage gear due to its high-quality metal construction and reliability.
* Fit: The Switchcraft 12A fits the DR-55 chassis, though it requires careful grounding to the metal frame/PCB common.
* Wiring: Wired specifically to handle the DR-55's Start/Stop trigger logic.
Results
The repair was a total success. The unit now responds perfectly to a standard momentary foot switch.
* Start: Functional.
* Stop: Functional.
* Reliability: The metal Switchcraft jack provides a much more secure connection than the original plastic housing.
This DR-55 is now back in the studio, ready for another 40 years of 16-step sequences.
"Mint condition...... And heck if a lot of fun and sounds awesome.
comes with all accessories (matrix pins/cables/power)
In perfect condition, everything works like it should. 2 to3 day shipping...
Ample combines the best elements of several of our recent products.
The sound elements of Fusebox
Jack patch points of Concussor Eurorack
Patch pin matrix of Vostok
Echo from Dr Strangelove
Sequencer and CV touch pads of Generator
It shares all this yet still has its own sound!"
Ample can be as complex or as simple as you want it to be
We have given this synth a large and diverse number of controls, that along side the patch sockets, will give even the best and experienced synthesist endless possibilities.
We have presented the controls in a user friendly and familiar synth layout that, together with this manual and other resources, enable even the new guy to get great sounds.
SYNTH – PERCUSSION – AUDIO PROCESSOR
Ample is a compact analogue synthesizer. Analogue - as in really analogue. Aside from the MIDI chip (which has to be digital), everything else is totally analogue using real transistors and op-amps. There are no CPU stabilised and quantised circuits, no DCOs, no digital LFOs and no digital EGs, as found on other so called analogue synths. The circuitry is based on designs dating back to the mid-1970s. So Ample has a genuine old sound.
"Super rare British analogue monosynth from Clef Electronic Music. Recently serviced and working well. Classic late-70s/early-80s panel with hands-on control: dual VCO section (with glide and sub-octs), noise, LFO, ADSR, and a great-sounding VCF with resonance. Compact keys, wood-effect cheeks and that gloriously utilitarian UK boutique vibe. Great for leads, SFX and modulated drones. Hard-wired UK mains cable fitted (240V).
Rear panel has Line Out, Headphones, and Speaker jacks. There’s also a “Sequencer” connector/jack present on the back panel; interestingly, this unit (and others we’ve seen) were built with no internal sequencer circuitry fitted, so the connector is effectively a vestigial feature."
"This is my first pass through the Super JX-10 editor, just wired all the pots, sliders, display, buttons etc into the mux and MCP chips. All programmed up for testing. A lot more to do and test as it doesn't do anything with upper and lower sections yet or send out any NRPN or sysex messages."
Click the auction link on top when you get there for additional listings.
"Very interesting TR-909 clone, apparently made from a French kit. Actually, this actual machine looks absolutely identical to the one featured on Crazy Patroche's website - so the one he made, rather than one made by others from the kit? Unfortunately it needs some work. Here's our tech James' report:.
Random hum cuts in and out. Snare sound faulty, no body and snappiness. One of the tuning pots perhaps wired backwards, clockwise tunes down. Still a great and presumably fairly simple project. Packing to include UK or Euro lead: 9GBP."
"A rare vintage combo organ with that unmistakable Farfisa sound. Removable, fold-out bottom reveals fold-down legs (one or two screws missing but still functional) and hard-wired power cable. Cable connects to the external Farfisa F/AR unit which provides power and contains the spring reverb. This unit is functionally good but it could use some internal contact cleaning in a few areas. We coaxed some very usable tones out of it in the demo video! The case itself has been "well-loved," showing moderate surface scuffs from travel.
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This is the Compact Duo CD/30, one of Farfisa’s higher-end models from the late ’60s; basically a two-manual version of the Compact with expanded voicing and richer tone-shaping options. A favorite among garage rockers, psych bands, and analog synth fans alike.
Features:
Two manuals (upper and lower keyboards) for split/layered playing Vibrato, tone boost, and percussion controls Bass and organ voices with classic Farfisa tabs Mark I version The Compact Duo was used extensively by Pink Floyd (Echoes, etc.); a favorite for its gritty tone and punchy presence on stage and in the studio.
30% of the sale supports the Bob Moog Foundation, preserving the legacy of electronic music and inspiring future generations."
Auction to be held at Musician's Hall of Fame & Museum, Nashville, on November 19
An incredible collection of more than 450 artifacts from the life and career of Florian Schneider, co-founder of the pioneer electronic band Kraftwerk."
Pics and videos featuring some of the gear below, and his Lederhosen for good measure (thanks greg!).
Update: the post has been fully updated with all the synth related gear. This may just well be the longest post to be featured on the site. I wanted to capture all the pics for all of the details including notes, scuffs, and of course serial numbers. It's an interesting look into what he used, the condition he keped his gear, in some cases, how he actually used his gear. Note the phonetics on the keys of the Casio CZ-101 and DX-100. Note the Midi Switch Box with a built-in speaker? What's that about? Note the camouflage key strap on the Korg RK-100 Remote Keyboard. Did he pick it out himself or did the keytar just come with it? Note the repeat midi controllers and the MIDI saxaphones. Wind was his primary instrument. You'll find a ton of the acoustic gear he used in the other listings. This is a fascinating insight into both what and how he used his gear.
Side note: there is no affiliate compensation for this post. The note at the top automatically shows for all posts with the Auction label.
Rack Mount Sennheiser VSM-201 Vocoder
Starting Bid
$5,000
Estimate
$20,000 - $40,000 USD
A late 1970s Sennheiser VSM 201 Vocoder with no serial number from the personal studio and collection of Florian Schneider of Kraftwerk (see images). While it’s said that only a few dozen of these Vocoders were produced, a few examples made it into the hands of forward-thinking musical artists including Herbie Hancock, Daft Punk, and of course, Kraftwerk, who used a VSM-201 like this on their albums Man Machine (1978) and Computerworld (1981). The VSM-201 has an intelligible sound that has not yet been bested by modern gear. Includes power cable. This VSM-201 has been removed from its wooden enclosure (which bears the serial number plate) and modified with a metal rack mount casing, presumably for live use. Requires 240v, IEC power cable not included.
Dimensions: 19 x 9 x 9 inches
Category: Kraftwerk, Equipment
Provenance: PROVENANCE From the Estate of Florian Schneider
Click the auction link on top when you get there for additional listings.
Pic of the inside.
"Released in 1977, the Yamaha CS30 is the flagship of their CS Monophonic range. It is as close to a modular synthesiser that Yamaha ever made and its modulation and routing options are extensive. This one plays and sounds great. The synthesiser responds to all the pots and sliders as it should and it's ready to use and create weird and wonderful noises and textures. However, to get it to 100 percent functionality the synth requires a service to fix a few issues. Neither the combined 1+2 audio jack nor headphone output work, though the individual 1 and 2 jacks are fine. The sequencer works when switched to Manual and steps through by pushing the red button. However, the 'Clock' function only works when the synth has been powered on for a while and has 'warmed-up'.
Cosmetically the synth is in pretty good shape with nothing broken or missing. There are lots of very small dots of blistered paint, some with a hint of surface rust. The most noticeable ones are at the top of the control panel but these have not increased in size or number over the past decade-or-so. They don't look too bad, in my opinion. Inside is clean and dry with no signs of damp. One of the C keys has a cigarette burn (WHY??!!!) which has melted the plastic slightly. However, all keys are secure and function correctly. The case has a few marks here and there, but overall it looks good.
The case was designed to make servicing very easy. The front control panel is hinged at the back and can be opened by removing just two screws from each side panel. This then reveals a very neat collection of boards and wiring.
The CS30 can be easily integrated into a modern MIDI studio setup. By using an appropriate converter you can interface various features of the synthesiser via its numerous control inputs and outputs:
Foot Controller (CV) for volume in.
Sequencer CV and Trigger (gate) out.
Key Voltage (pitch CV) in and out.
Trigger (gate) in and out.
External (audio to the filter) in.
It features two voltage controlled oscillators (VCOs), two voltage controlled filters (VCFs - both featuring low-pass, band-pass and high-pass options), two voltage controlled amplifiers (VCAs) and three envelope generators. It also sports a ring modulator and a voltage controlled low-frequency oscillator (LFO).
It is fairly unusual for a hard-wired synthesizer in that it features a variety of switches which allow the user to re-route the signal flow from the usual VCO-VCF-VCA convention. For example, VCO 1 can output a square wave through VCF 1 whilst also outputting a high-pass filtered sawtooth wave through VCO 2. Another example is that the envelope generators can be assigned to any of the VCO, VCF and VCA modules and can also be inverted. Because the LFO is voltage controlled, the oscillating speed can be governed by an envelope generator and different waveforms can be applied to the other modules all at the same time. The CS30 also features an external signal input for filtering other musical instruments and audio sources, which can also be used as a modulation source. It includes an onboard eight-step analogue sequencer."
"LUNETTA II - Полумодульный логико-аналоговый синтезатор. Хорош для создания протяжных мелодических паттернов, асинхронных пульсаций и псевдослучайных событий. Огромный полёт для экспериментов в связках с другими синтезаторами.
Всё предварительно скоммутировано
Питание:
9 вольт (5.5/2.1 минус в центре.
Блок питания и патчи в комплект не входят.
Для заказа пишите в ТГ: @SynthCone_master"
Googlish:
LUNETTA II - Semi-modular logic-analog synthesizer. Great for creating long melodic patterns, asynchronous pulsations, and pseudo-random events. Great for experimenting with other synthesizers.
Everything is pre-wired.
