The Neutral Labs Elmyra 2 is a four-voice digital-analogue hybrid drone synthesiser designed for microtonal sound exploration, offering a flexible synthesis engine with wavetable oscillators, extensive modulation, sequencing capabilities, and multiple filter options. Available as a 42 HP Eurorack module or a semi-modular desktop unit, it provides a versatile platform for creating anything from rich ambient textures to aggressive, distorted drones.

Advanced Sound Engine and Modulation

Elmyra 2 employs a complex wavetable-based oscillator engine, featuring up to twelve oscillators in total, with full 1V/octave compatibility for external control. A chromatic mode enables harmonic structures and chord creation, while microtonal scales expand tuning possibilities beyond conventional equal temperament. With 31 modulation targets and 41 patch points, it functions as a compact modular system, allowing deep sound design through extensive modulation routing. Four independent voices can be triggered via capacitive touchpads or external control voltage.

The touch-sensitive pads incorporate analogue envelopes that double as modulation sources, introducing dynamic expressivity to performances. A dual complex LFO section operates in standard, sample-and-hold, or sample-and-glide modes, offering versatile modulation options. Each voice benefits from ten modulation and effects parameters, including unison detune, dual sub-oscillators, chord mode, waveshaping, saturation, bit-mangling, sample rate reduction, noise generation, high-pass filtering, and low-pass filtering.

Filter Selection and Unique Sound Processing

A switchable filter section provides multiple tonal characteristics. Users can choose between a 2-pole multimode state-variable filter with low-pass, band-pass, and high-pass options for aggressive resonance; a creamy 4-pole low-pass ladder filter for smoother response; or a base-width filter operating as either a band-pass or notch filter. High-pass and low-pass filters can be arranged in series or parallel for additional sonic sculpting.

Beyond filtering, the Elmyra 2 integrates a delay processor capable of extreme feedback levels, adding depth and rhythmic complexity. A lo-fi reverb module enhances spatial effects, while the unique "OUCH" circuit applies destructive distortion, waveshaping, and filtering to generate unpredictable timbres.

Sequencing and Synchronisation

Four independent sequencers enable complex polymetric patterns, with each sequence supporting arbitrary step lengths up to 128 steps per voice. The delay time and LFOs offer both free-running and clock-synchronised operation, including tap tempo functionality. This flexibility allows seamless integration into modular systems and external setups, making it suitable for both structured compositions and freeform improvisation.

External Audio Processing and Customisation

An external audio input allows external signals to be processed through Elmyra 2’s synthesis and effects engine. The front panel includes slots for preset cards (a set of four is included), enabling instant timbral changes. Users can also insert electronic components such as capacitors or diodes to alter the sound character, providing a unique way to shape and personalise the instrument’s sonic output. Preset cards are cross-compatible with other Neutral Labs modules, further expanding their utility.

Modular Utility and Construction

Elmyra 2 functions as a self-contained modular environment, featuring a dual attenuator, buffered multiple, voltage generator, and CV summing circuit for additional routing flexibility. The desktop version is housed in a durable solid bamboo case, while the Eurorack variant seamlessly integrates into existing modular setups. Both configurations are available as pre-assembled units or DIY kits.

Power and Eurorack Compatibility

The desktop version operates via a USB-A to USB-C cable and requires a 5V power supply, such as a phone charger, power bank, or laptop. It also features a Eurorack power header, allowing installation into a modular system. However, the desktop enclosure lacks Eurorack rails and uses USB power instead of the standard Eurorack power bus, requiring modifications to function as a 42 HP Eurorack rack.