Busy Circuits Introduces MCO Compact Multi Synth Voice For Eurorack Modular Systems


Busy Circuits has introduced the MCO mk II, a versatile digital VCO and voice module inspired by 90s/00s digital synthesizers.

The MCO offers a broad collection of unique synth voices, each with extensive, customizable parameters. These parameters can be directly controlled or modulated through assignable internal and external sources. Each voice supports up to four-voice chords, external-triggered envelopes, multiple LFOs, and dual audio outputs.

Voices include a multi-dimensional wavetable oscillator based on the original MCO, a complex additive synthesis engine, a multi mode ’JP’ type digi-synth with super saws and more, a fully featured vocoder, a virtual analog implementation, a bass synth for both kicks and sub sonic tones, a SID chip voice and a voice synthesis engine for generating human vocal phonemes.

Features:

  • Offers a collection of unique synth voices, each with numerous parameters.
  • All synthesis voices support up to 4 voice chord and dual outputs.
  • Built in Envelopes and LFOs for modulation and voice behavior.
  • Factory and user saveable presets per synthesis voice.
  • Graphically rich color and easy to use UI.
  • All settings kept between power cycles.
  • 4 freely assignable CV inputs.
  • Audio rate input for FM, Sync and more.
  • Support for Axon expanders, for up to 8 assignable CV inputs.
  • USB-C for quick and easy ‘drag and drop’ firmware updates, custom wavetable upload and device backup/restore.
  • Also available as a virtualized VCV software module.
  • Skiff friendly with reverse power protection.
  • 2 Year Warranty.

Here’s a playlist of the MCO’s voice options:

The Busy Circuits MCO is available now for $289.

 

Frap Tools Magnolia Synthesizer Interview


Developer Christian Halten shared this interview with Simone Fabbri of Frap Tools about the creation of their new keyboard synthesizer, Magnolia, described as a ‘West Coast Polysynth’.

The Magnolia is one of the most interesting new synths introduced at Superbooth 2025. Frap Tools showcased two pre-production Magnolia synthesizer keyboards at the event.

Magnolia is an 8-voice analog through-zero FM synthesizer. Options include waveshapers, wavefolders, and analog linear through-zero FM – features associated with the “West Coast” synthesis world – in addition to analog oscillators and filters.

Frap Tools expects to release the Magnolia synthesizer at the end of summer 2025.

They note that the release version “may have a more refined interface, it will feature digital effects, and some of the features currently under evaluation may disappear.”

Love Synthesizers Intros First Love Synth


At Superbooth 2025, Love Synthesizers introduced the First Love – a compact instrument that fits in a backpack, has a battery option, built-in speakers, headphone output and a 4×4 live looper.

They say it’s “Perfect for sound-designing and composing, wherever you want to be.”

Features:

  • 4 Parts Multitimbral
  • Flexible Modulation
  • 2x Stereo/4x Mono Ouput
  • Riff Arpeggiator
  • Microtonal Tuner
  • Multiple Effects, including reverb, delay & chorus
  • 4×4 looper
  • Sync In/Out
  • Polyphonic
  • MIDI In/Thru
  • Patch Sharing
  • USB-C & Wireless connectivity
  • Headphone Out
  • Battery Option
  • Built-in Speaker

First Love is available to pre-order, priced at €419,00.