Erica Synths SYNTRX Analog Matrix Synthesizer Now Available

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Erica Synths has announced that its SYNTRX analog synthesizer is now available worldwide.

The SYNTRX is a matrix synthesizer, created in collaboration with engineers from Riga Technical University, that takes inspiration from the classic Synthi AKS,  but is an original design that offers capabilities that go far beyond the synth that inspired it.


  • 3 VCOs that track over 8 octaves
  • Octave switch for the VCO1
  • Sync option for the VCO2
  • Noise generator with “color” filter
  • Resonant VCF
  • Ring modulator
  • Spring reverb
  • ASR/AD looping envelope generator
  • Joystick controller
  • Input amplifier with adjustable gain
  • 3 VCAs
  • Sample & Hold circuit with an individual clock
  • Output signal filter
  • Mechanical CV/audio signal level indicator
  • MIDI In and MIDI Thru
  • Built in speakers

Pricing and Availability

The SYNTRX is available now for € 2500.00.

Arturia PolyBrute Morphing Analog Polysynth A Flagship Designed For Expressive Synthesis

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Arturia today introduced the PolyBrute, a new 6-voice polyphonic analog synthesizer that’s designed for expressive synthesis.

At its core, it offers 6 analog voices, based on Arturia’s ‘Brute’ oscillators and dual filters. The synth features two Brute oscillators per voice, feeding into dual filters, a Steiner filter and a Moog-style filter. The filters can be patched in series, in parallel, or as a mix of both.

The PolyBrute also offers extensive modulation options, including three LFOs per voice and a matrix modulation patching system.

At the end of the voice path are 3 types of effect – Modulation, Delay, Reverb – that let create effects from Chorus to BitCrusher, Karplus to BBD delay, Plate to Dreamy reverb.

The Arturia PolyBrute synth engine features an A & B ‘state’ for every patch, saving two variations on the parameter settings. When you sweep between those two states, you’re simultaneously altering all relevant parameters – like turning all the knobs at once. You can map PolyBrute’s envelopes, LFOs, aftertouch and sequencer to change the morph position between the two states in real-time.

But what makes the synth unique is the variety and expressive control options it offers.

It starts with a velocity/pressure-sensitive keybed, pitch wheel and assignable mod wheel, and foot pedal controller inputs. Performance options include an Arpeggiator, Matrix Arpeggiator and a 64-step polyphonic step sequencer.

The PolyBrute panel also offers knob-per-function control, for immediacy in performance and sound design. A Morph knob lets you dynamically move between the A & B states for each patch.

The PolyBrute also features the Morphée controller, a sensor that captures three dimensions of expression. You can map the X and Y touch axes, plus the Z pressure axis, to any destination parameters available in the Mod Matrix. You can also use the Morphée to randomize your sequences or arpeggios with spice, dice, and ratcheting effects.

The PolyBrute also includes a ribbon controller. Positioned directly above the keybed, you can assign it to your chosen modulation destination.

For computer integration, Arturia has created PolyBrute Connect, a standalone Mac/PC app and a plugin that lets you organize your patch library and enjoy bi-direction visual editing between software and hardware. This makes it possible to control every PolyBrute parameter via MIDI tracks in your DAW.


  • Analog Morphing Synthesizer
    • 6 voices of Polyphony
    • Mono, Unison, Poly voicing
    • Single, Split, Layer modes
  • 61-keys with Velocity and Aftertouch
  • Pitch Bend, Mod Wheel, Ribbon controllers
  • Morphée touch and pressure sensitive 3D controller
  • Sound Morphing capability, part A and B for each preset
  • Two Analog VCO’s
    • Saw
    • Triangle + Metalizer
    • Square + Pulse Width
    • Sub
    • Linear FM
    • Hard Sync
  • Noise Generator
    • Continuous tone from rumble noise to white noise
  • Osc and Noise Mixer with Filter routing
  • 12dB/Oct Steiner Parker Filter
    • Continuous LP>Notch>HP>BP morphing
    • Cutoff, Resonance, Brute Factor
  • 24dB/Oct Ladder Filter with Distortion
  • Three Envelopes
    • Two ADSR
    • One DADSR
    • Looping capability
  • Three LFOs
    • LFO1 and LFO2 with waveform selection
    • LFO3 with waveform shaping using Shape and Symmetry
    • Rate control & Tempo Sync
    • Various retrig options
  • Three stereo digital effects
    • Modulation FX : Chorus, Phaser, Flanger, Ring Modulation, …
    • Delay : 9 algorithms including BBD, Digital delay, …
    • Reverb : 9 algorithms including Hall, Plate, Spring, Shimmer, …
  • 768 preset slots
  • 12×32 Modulation Matrix
  • 64 step polyphonic sequencer
    • Notes, Accent, Slide per step
    • 3 tracks of automation
  • Arpeggiator and Matrix Arpeggiator
  • Stereo audio output
  • MIDI and USB i/o + analog clock i/o
  • 2 expression and 1 sustain pedal inputs

Pricing and Availability

The Arturia PolyBrute is available to order now, priced at $2,899 USD.

Apollo Analog Synthesizer Prototype Preview

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Argentinian synth maker GS Music shared this preview of the latest Apollo analog synthesizer prototype, with a little Aquatarkus by Emerson Lake and Palmer.

The GS Apollo I is an analog monophonic synthesizer. It has two voltage controlled oscillators (VCO), a mixer, a voltage controlled filter and a voltage controlled amplifier (VCA). Modulation options include three LFOs and two ADSR envelope generators.

Unlike many retro-inspired analog synths, the Apollo I has patch memory and can save 32 presets.

Details are available at the GS Music site.

The Sequential Circuits Prophet 20 (Prophet 10 x 2) Is ‘Ridiculous & Awesome’

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Philadelphia synth repair company Bell Tone Synth Works founder Alison Stout shared this video, discussing a challenging project, repairing a classic Sequential Circuit Prophet 10.

Then she MIDI’d the repaired synth with another rare Prophet 10 synth to create a ‘Prophet 20’, which is, as she describes it, ‘ridiculous & awesome’.

The sound demonstration starts at 6:42 in.

Here’s what she has to say about the video:

“I finally finished the lengthy and labor-intensive restoration of the second of two vintage Sequential Circuits Prophet 10s recently restored by my workshop Bell Tone Synth Works, and couldn’t wait to MIDI chain them together to create the PROPHET 20! I made this video showing off what the monster setup sounds like as well as describing the restoration process. One of them had suffered an apocalyptic power supply failure and then apparently been run for quite some time in that state, and dozens of logic chips had been destroyed, making for a very challenging troubleshooting process.

Working on incredible vintage synths every day has demystified a lot of them for me, to the point that sadly, my reaction to a lot of even the coolest synths is something like “yeah, it’s pretty good I guess.”

But this setup was so incredible-sounding and enjoyable to play that I was literally running around the house shouting about how awesome it was in between when I was playing it! I felt a level of joy and wonder that I haven’t felt from playing a particular synth(s) in a while. All it means is that I guess I’ve become desensitized to the absurd degree that only $24K worth of synth with 244 keys and 40 oscillators impresses me… it’s like, one of the hardest possible drugs as far as polysynths are concerned! Pretty ridiculous when you think of it that way.

While we wait for them to get picked up by their owners, I’m continuing to test them (wink wink)…”