Synth Geekery 298

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In episode 298 we talked about synths, eurorack, sequencers, drum machines, samplers, effects and software! Plus all the usual segments! Funny Side, News from the Geekery, Price Watch, Name that Synth …

Show contents:

About the Synth Geekery Show

Synth Geekery is a weekly podcast/live stream (YouTube) show about everything synthesizers, drum machines, samplers, sequencers, eurorack and music technology. We take the “one of the masses” viewpoint, where we are also users of gear just like you (read: we’re not influenced by commercial product placement).

The show relies on the generous contributions of the synth community. You can contribute in many ways including supporting us via our YouTube Channel Membership or Patreon. We also have regular and special video guests: if you would like to take part in future shows – please contact me via email on the about page here.

Your Host

Ranzee (Ranz Adamson) is your show host. He’s based in Perth, Western Australia and has been a hobbyist musician and technologist for most of his life. More information can be found about him here.

YouTube: https://www.youtube.com/ranzee

BandCamp: https://ranzee.bandcamp.com

Guests

This week’s video guests are:

Daren T. Housse

Bandcamp Link: https://darenthousse.bandcamp.com/

Youtube: https://www.youtube.com/channel/UCLPHxpZgFKKE1wkG9ndto3A

Daren resides in the UK and is one of the first video guests on the show since 2019. He has a large amount of tracks on his youtube channel plus a great album collection over on BandCamp.

SynthAddict

Andy is a musician and technologist from the bay area in California. He has an amazing collection of music tech gadgets and a large knowledge of synthesizers.

Youtube: https://www.youtube.com/channel/UCUtABvP7q29uvLKi73zIjFQ

Ian J. Cole

Ian is a musician, composer, sound designer and producer currently producing solo ambient electronic music. He also runs Sinners Music which is a Record Company and Online Music Retailer in East Yorkshire, England

Youtube: https://www.youtube.com/c/IanJCole

Chris – Maikshifter

Chris is a musician and technologist from Perth, Western Australia. He’s always had a love for creating and tinkering with music electronics and has recently embarked on a new journey creating eurorack modules.

Youtube: https://www.youtube.com/@Maikshifter

Video replay

Funny Side

The funny side segment is a collection of memes that are somewhat relevant to the synth geekery community. Some of these images are taken from Facebook, Instagram and other social media sources. Please respect the creators. Hope you enjoy this week’s selection:

News

Deftaudio Teensy 1U 8×14 MIDI Interface

The Deftaudio Teensy 1U 8×14 MIDI Interface is a compact and powerful MIDI and audio hub designed for synth and modular enthusiasts. Built around the high-speed Teensy 4.1 (600MHz) microcontroller, it offers:

  • 8×14 MIDI routing matrix
  • 4 audio outputs
  • 6 trigger/sync outputs
  • USB connectivity
  • Standalone operation
  • Open-source hardware and software for deep customization

Ideal for DIY projects and custom setups, it is available as a fully assembled 1U unit, DIY kit, enclosure, or bare PCBs.

Price: 250

Link: https://www.tindie.com/stores/deftaudio/

Boredbrain Xcelon Xi3

The Boredbrain Xcelon Xi3 is a compact 3-channel stereo audio input expander designed to enhance the capabilities of the Xcelon Eurorack mixer. Occupying just 8HP of rack space, it seamlessly integrates with the Xcelon system, providing additional channels without compromising valuable space.

🔧 Key Features

  • Channel Expansion: Adds three stereo or dual-mono channels to the Xcelon mixer within an 8HP module.
  • Volume Control: Each channel features VCA-based volume controls with CV input (0 to +5V) and responsive LED indicators for visual feedback.
  • Effects Sends: Two stereo FX sends per channel, allowing integration with external effects processors.
  • Mix Bus Assignment: Each channel can be routed to one or both of Xcelon’s stereo output mix busses (A, B, or A+B) via a 3-position switch.
  • Dual-Mono Configuration: Configurable jumpers enable dual-mono operation, allowing up to six mono sources to be handled across the three channels.
  • Direct Outputs: Pre/post-fader direct output ports for all three stereo channels facilitate advanced routing and multi-channel recording setups.
  • Integration: Connects to the main Xcelon mixer using a supplied 16-pin ribbon cable, compatible with Xcelon’s expansion ports.
  • Power Requirements: Consumes +12V at 55mA and -12V at 50mA.
  • Dimensions: 8HP width, 1.5 inches (38mm) depth, and weighs approximately 4.4 oz (125g).

💰 Price

  • USD: $269
  • GBP: £269

Note: Prices may vary based on retailer and region.

📅 Release Date

The Xcelon Xi3 was officially introduced in late May 2025, alongside the Xcelon Cue module, expanding the flexibility of the Xcelon Eurorack mixing platform.

For more detailed information, including user guides and purchasing options, visit the official product page.

Boredbrain Cue

The Boredbrain Xcelon Cue is a Eurorack expander module designed to enhance the monitoring capabilities of the Xcelon mixer system, particularly for live performance scenarios.

🔧 Key Features

  • Pre-Fader Listening (PFL): Monitor up to 14 audio sources, including channels 1–12, FX returns, and the main mix, without affecting the main outputs.
  • Individual Cue Buttons: Select channels individually or simultaneously using dedicated buttons for each channel, FX returns, and the main mix.
  • Dedicated Headphone Output: Features an independent level control, optimized for low-impedance headphones (16–32 Ω), and capable of driving up to 80 Ω.
  • Eurorack-Level Stereo Output: Provides an additional stereo output for alternate cue bus routing or creative processing within your modular setup.
  • Integration with IO Module: Connects to the IO module to cue other Eurorack audio signals, offering flexible monitoring options beyond the Xcelon system.
  • Compact Design: Occupies only 6HP of rack space, preserving valuable real estate in your modular setup.

📦 Specifications

  • Width: 6 HP
  • Depth: 1.5 inches (38 mm)
  • Weight: 2.4 oz (68 g)
  • Power Consumption: +12 V 70 mA, -12 V 40 mA
  • Audio Outputs: 2 x 3.5 mm mono jacks
  • Headphone Output: 1 x 3.5 mm stereo jack
  • Headphone Output Impedance: ~0.2 Ω

💰 Price

  • USD: $249.00
  • GBP: £249.00

📅 Release Date

The Xcelon Cue was announced in late May 2025 and is currently available for purchase.

For more detailed information or to make a purchase, visit the official Boredbrain Music product page.

DivKid Mutes Mk2

The DivKid Mutes Mk2 is a refined version of the original 2019 Eurorack module, developed in collaboration with Befaco. This updated model introduces several enhancements aimed at improving performance and flexibility for modular synthesizer users.

🔧 Key Features

  • Four Independent Channels: Each with its own input and output, allowing for versatile signal routing.
  • Three-Position Mechanical Switches:
    • Momentary: Signal passes through only while the switch is held.
    • Off: Signal is muted.
    • On: Signal passes through continuously.
  • VCA-Based Muting Circuit: Replaces the original vactrol design, offering improved signal integrity, greater accuracy, and click-free muting.
  • Buffered and Cascading Normalization: Inputs can be normalized to allow for signal splitting and grouping, enhancing routing capabilities.
  • LED Indicators: Visual feedback for each channel’s signal status.
  • Dual Format Compatibility: Ships with both 3U (4HP) and 1U (24HP) front panels, allowing for flexible integration into various Eurorack setups.

Here is a comparison table between the DivKid Mutes Mk1 and Mk2 Eurorack modules:

FeatureDivKid Mutes Mk1DivKid Mutes Mk2
Release Year20192025
Channel Count44
Switch TypeThree-position mechanical switch (On / Off / Momentary)Same (retained for performance use)
Muting CircuitVactrol-basedVCA-based (click-free, better accuracy and response)
Signal HandlingAudio and CVAudio and CV
LED IndicatorsYes (basic signal presence)Yes, improved visual feedback for channel status
NormalizationSimple signal pass-throughBuffered & cascading normalization (flexible signal routing)
Form Factor3U (4HP only)3U (4HP) and 1U (24HP) panels included
Power Consumption~ Low+12V: 20mA, -12V: 15mA
Depth~32mm32mm
Build OptionsAssembled or DIY kitSame (Assembled or DIY kit available)
Price (assembled)~€100€114.95
Special FeaturesLive muting and momentary useEnhanced muting, normalization, and click-free switching
Collaboration WithBefacoBefaco

✅ Summary of Key Upgrades in Mk2:

  • Click-free muting using VCA instead of vactrols.
  • Buffered normalization for flexible signal flow.
  • Dual-format front panel (3U + 1U) included by default.
  • Improved electrical design for cleaner signal handling.

💰 Price

  • Assembled Module: €114.95
  • DIY Kit: €96.80
  • Pre-Order (UK): £99.00

📅 Release Date

The DivKid Mutes Mk2 was officially announced and made available in late May 2025. Retailers such as Signal Sounds expect stock to arrive by June 9, 2025. signalsounds.com

MIDISID 4 “Morpheus”

The MIDISID 4 “Morpheus” is the latest iteration of PeacockMedia’s SID-based synthesizer, designed to deliver the iconic sound of the Commodore 64’s SID chip with modern enhancements.

🎛️ Key Features

  • Dual SID Chips: Equipped with two Kung Fu SID chips (modern recreations), providing 6-voice polyphony (3 voices per chip).
  • MIDI Compatibility: Features standard 5-pin MIDI input and a USB-C port capable of acting as a USB host for MIDI-over-USB devices.
  • Enhanced Interface:
    • Larger screen for improved visibility.
    • Revised menu system for easier navigation.
    • New ‘duophonic’ mode allowing two-note polyphony with layered voices.
    • Physical stereo/mono switch for flexible audio output.
  • Sound Design Capabilities:
    • Each voice offers a choice of four waveforms, ADSR envelope control, filtering, pulse-width modulation (PWM), vibrato, ring modulation, and waveform sync.
    • Three operational modes:
      • General MIDI Mode: Maps MIDI channels to voices, responding to program change messages.
      • Polyphonic Mode: Applies the same patch to all voices, enabling 6-note polyphony.
      • Monophonic Mode: Utilizes all voices for complex single-note sounds.
  • Construction:
    • Fully built and tested unit.
    • Custom firmware developed specifically for this project.
    • Design reminiscent of the classic Commodore 64 ‘breadbin’ case, with enclosed sides and a sloped top for better ergonomics.

Here’s a comparison table highlighting the key differences between the MIDISID 3 and MIDISID 4 “Morpheus” synthesizers:

FeatureMIDISID 3MIDISID 4 “Morpheus”
SID Chips2x Kung Fu SID2x Kung Fu SID
Polyphony6 voices (3 per chip)6 voices (3 per chip)
DisplaySmall screenLarger screen for improved readability
Menu SystemOriginal/basic interfaceRevised, more user-friendly menu system
Operational ModesGM and polyphonicGM, polyphonic, and new duophonic mode
Duophonic ModeNot available✔ Available – allows 2-note layered polyphony
MIDI Input5-pin DIN5-pin DIN + USB host for MIDI-over-USB devices
Audio Output Mode SwitchNot available✔ Physical stereo/mono switch
Case DesignExposed PCB (open design)Enclosed, breadbin-style sloped case
FirmwareEarlier versionUpdated with expanded features
Price£130 GBP ($170 USD)£140 GBP (~$188 USD)
Release Date~2023May 2025

Summary of Improvements in MIDISID 4:

  • Better usability (screen + menu)
  • USB MIDI host support
  • Duophonic mode
  • More professional enclosure
  • Stereo/mono hardware switch

💰 Price & Availability

📅 Release Date

The MIDISID 4 “Morpheus” was officially released in late May 2025.

Koma Elektronik Monoplex Sequencer

The KOMA Elektronik Monoplex Sequencer is a compact and fully CV-controllable 16-step analog/MIDI sequencer designed for Eurorack systems. It serves as a streamlined counterpart to KOMA’s larger Komplex Sequencer, offering extensive modulation capabilities in a smaller form factor.

🔧 Key Features

  • 16-Step Sequencing: Each step is adjustable via faders with integrated LEDs for clear visual feedback.
  • Comprehensive CV Control: Nearly every parameter is voltage-controllable, including:
    • Per-step repeats
    • Sequence start point
    • Gate length
    • Sequence length
    • Glide
    • Skip step
    • Transpose
    • Clock input and divisions
  • Multiple Outputs:
    • CV, Gate, and Trigger outputs
    • Start/End triggers
    • Dedicated Clock output
  • MIDI Integration: Includes MIDI I/O for seamless connectivity with external gear.
  • Quantization Options:
    • Scale switch to toggle between Major, Minor, and Chromatic scales
    • Range switch to adjust global CV output between 2V, 5V, and 10V
  • Eurorack Specifications:
    • Width: 42 HP
    • Depth: 27 mm
    • Current draw: Information not specified

🎛️ Summary

The Monoplex Sequencer offers a powerful and flexible sequencing solution for modular enthusiasts, combining extensive CV control with MIDI capabilities. Its compact design makes it a versatile addition to any Eurorack setup, providing deep modulation options without occupying excessive space.

💰 Price & Availability

Price Watch

Find below images and links to the items we showed for the price watch segment.

Analogue Solutions Amplehttps://ebay.us/fjddcr
Rittor AVC KV-04 RYUICHI SAKAMOTO ROM Cartridgehttps://ebay.us/DYc10f
Moog Vocoder MBVO 327https://tidd.ly/4dMIPN4
Moog Polymoog with PolyPedalhttps://tidd.ly/451oPnx
John Bowen Solarishttps://tidd.ly/451M94p
Yamaha Reface CPhttps://ebay.us/TVwgFK

Name That Synth

No name that synth this week – send one in!

If you are after more information about Name that Synth – please check out this page here.

Saturday Sonority

This week’s Saturday Sonority we might talking about …..