MATRIXSYNTH

New Fairlight CMI Lightpen USB Mouse Interface

Overview video upload by DeftAudio

"The Fairlight CMI USB Lightpen Interface replaces (or complements) the original lightpen with a standard USB mouse, making navigation faster, easier, and far more accessible. Designed specifically for Fairlight Series I/II/IIx, this compact interface bridges vintage hardware with modern usability."

https://deftaudio.com/store/tproduct/...

The Fairlight CMI USB Lightpen Interface replaces (or complements) the original lightpen with a standard USB mouse, making navigation faster, easier, and far more accessible. Designed specifically for Fairlight Series I/II/IIx, this compact interface bridges vintage hardware with modern usability.

Originally designed in 2010 by Joe Britt, in 2026 Joe and Deftaudio have redesigned it for better look and feel, added an extra cursor mode, aluminum enclosure and powder coated side panels with silkscreen.

KEY FEATURES:

USB Mouse Control
Navigate your Fairlight interface using a standard USB class-compliant mouse
No drivers, no setup, plug and play
Designed for simple, reliable mice (no special features required)

Works Alongside Original Light Pen
Keep your existing light pen connected
Seamlessly switch between light pen and mouse—or use both simultaneously

Dual Cursor Modes (NEW)
Mode A: Small, precise cursor for detailed work
Mode B: Large, highly visible cursor for navigation
Switch instantly via front-panel toggle, no reboot required

Buffered Video Output
Additional RCA composite video output on the rear panel
Drive a second monitor simultaneously with the original display
Ideal for expanded viewing, demonstrations, or studio setups

Premium Build Quality
Custom-designed PCB with fully assembled components
Rugged metal enclosure matching Deftaudio’s Luma One production standards
High-quality silkscreened front and rear panels
Built for durability and long-term use in professional environments

Simple Setup
Connect the interface between your Fairlight system and monitor
Plug in a USB mouse
Power on—LED confirms device recognition
Start navigating instantly
Optional: connect a second monitor via composite output for dual-screen operation.

Compatibility Notes
Supports USB class-compliant mice only
Not compatible with advanced gaming or feature-heavy mice
Requires monitor(s) with composite video input for video output feature

You'll receive:
1. Lightpen USB Mouse Interface
2. Video Cable
3. USB-B power cable
4. Power adapter

4/9/26 Metasonix RK7 RK2 RK8 + Beers Melakarta & DAC + ALM Pamela’s New Workout + Alesis MIDIVERB II

video upload by Cfpp0

This is the first post to feature the Beers Melakarta.

"Feeding the Beers DAC and Beers Melakarta several triggers from ALM Pamela’s New Workout, and then modulating the pitches of the two Metasonix RK7 VCOs and the CV on the Metasonix RK8 Filterwall. Gated reverb from the Alesis MIDIVERB II."

"The idea for this module came from my friend Rodrigo Kendrick. He was a bit burned out on western tonal structures, and had recently missed out on an electronic lehra machine in a facebook marketplace deal which fell through. These machines are a kind of practice tool for carnatic musicians that plays a wide variety of different raga. Think that 'casio auto-chord' function on old casio keyboards, but for carnatic music.

Unwilling to wait for another one to come up on the used market, he did some cursory research, and sent me an early-morning design document, expanding the functionality of DAC with a scheme of two rotary switches and one toggle switch to select the pitch sets for all 72 Melakarta ragas and specified a clock input that would run up and down the selected raga in ascending then descending order, with the ability to turn around or reset on command. In theory this would allow the complex rhythmic and sequence rules of the raga to be implemented with external logic and sequencers, but still give the module enough sequencing functionality to explore the pitch sets of these raga on it's own.

I got excited and went a bit silly 'helping' until we had shoehorned in a pile of other features like binary addressability of the selected swara (interval), gate outputs for each swara, an 'inhibit' input that mutes the transposition voltage while the clock continues in the background, CV controlled halving of the clock frequency, extra +1oct input, and the logic-inverting toggle switches from the DAC on several inputs.

This design is all analogue using discrete MOSFETs and 0.1% tolerance resistors in a weighted DAC driven by a 4000-series CMOS based sequencer.

Yes, it might have been simpler to use a microcontroller."

SCJS#89 - VHIKK X 1RST DATE

video upload by FL3SHB4CK

"Small Case Jam Sessions #89 - VHIKK X 1RST DATE

VHIKK X solo, first experiment with the beast.

Recorded live thru Syntakt delay & reverb

‪@forge_tme‬"

XenoMorph II - MakeNoise Polymorphism with NUSS and Morphagene

video upload by Cinematic Laboratory

"Five years ago, I already played with the idea of expanding the Morphagene into a shapeshifting creature. I used two Phonogenes to process the Morph's L and R outputs, inspired by a lo-fi Ciat-Lonbarde Cocoquantus. It was a fun experiment. This Xenomorph is different, a worthy V2. It's a custom 104 HP system I designed as a synth I did not know how to make:

Morphagene
Mult
MultiMod
PoliMaths
QXG x 2
X-PAN
Mimeophon

When used in a skiff, X-PAN is replaced by X-OH (output) and a mult. If you have stackables, you can even use the new GTE. The idea is to bring the stereo Morphagene OUTS together with the QXG outs, so you'll need to stack/mult one Morph out into MultiMod.

The 7U case obviously has the CV bus and - can / could - contain the regular NUSS layout AND the Xenomorph Granular NUSS system. Together they could hold two universes which makes it Multiversal (NMSS) which logically brought me to the name 'Nemesis'. We often assiciate that name with something bad, but after a bit of research it translates to 'the force that reveals your limitations'. So when we meet our Nemesis, the only thing we need to do is grab another patchcable and say 'why stop here?' bla, bla, bla.
Seriously. This is an amazing layout.

Even though MultiMod was never intended for audio, again it's my favorite way to use it, and now it's the core of this setup. It will take the L[mono[ channel of Morphagene as an input so it will create eight roughly independent tentacles. MultiMod has a NUSS header on the back, so without any cable clutter it connects to QXG's audio in and PoliMaths will do the envelopes. So I am basically replacing the MultiWAVE for Morph + Mod as the new sound engine.

I did not realize I'd be getting a genuine granular synth on steroids. A workstation."

NORD DRUM 2 MODULE AND PAD. EXCEPTIONAL. PSU. BOXED

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

via this eBay listing

"There is no module that has this sound. When you hear it you have to do a double take because it's uncannily analogue, huge, fat and all the superlatives you know are attached to this legendary piece of kit.

Included:

Fully functional Nord Drum 2 Module
Fully Functional Nord Drum Pad
PSU
Ethernet cable
Stand adaptors for both Module and pad
Manuals
Original Boxes"

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ARP Quadra: good looks, needs servicing

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via this Vemia listing

Click the auction link on top when you get there for additional listings.

"A late 70s Arp Quadra in good cosmetic condition but non working. Bought to restore but other projects have got in the way. Several fader caps have broken off or are missing but otherwise complete."

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UDO Audio DMNO 8-voice polysynth

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

via this Vemia listing

Click the auction link on top when you get there for additional listings.

"Up for grabs is a white UDO DMNO in like new condition. Comes with all manuals and UK power cable. Seller used briefly before putting back into the box. This is a fantastic new design approach from UDO with equally fantastic sounding filters to boot. Imagine Oberheim Xpander-type filter types with a Roland-style flavor, multiple types of FM, and numerous voicing modes, and you're just starting to get an idea of the power of this synth."

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Mayer EMI MD900 XVA polysynth

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

via this Vemia listing

Click the auction link on top when you get there for additional listings.

"Beautiful and powerful extended virtual analogue polysynth module. With original manual and UK power supply. Looking practically unused - possibly because this one had an encoder issue which Mayer sorted by immediate replacement. Fantastic displays, seriously informative. Altogether a very pretty and good-sounding synth. Maybe still available new (typical UK price 2950GBP) but actually everywhere seems to be sold out. Packing 12GBP."

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