Unusable Engineering has released Currents & Nostalgia, a six-voice virtual analogue synthesizer for macOS and Windows.
Currents & Nostalgia uses two circuit-modelled oscillators based on a saw-core oscillator originally designed by Unusable Engineering founder Rasmus Nyåker for an earlier hardware project. The instrument combines these with a saturating waveform mixer, low-pass and high-pass filters, and a small set of hardwired modulation sources.
The synth uses a familiar subtractive architecture, with two independent slot systems adding movement to the oscillator and filter sections. Each slot system can store up to eight complete parameter states and step or slew between them using different patterns and control sources.
The oscillator and filter slots can run independently at different speeds and can also reach audio rates. Individual parameters can be locked so they remain fixed while the rest of the slot state changes.
Key Features
- Six-voice polyphonic virtual analogue architecture.
- Two circuit-modelled oscillators based on an original saw-core hardware design.
- Saturating waveform mixer.
- Low-pass and high-pass filtering.
- Two independent 8-slot systems for oscillator and filter parameters.
- Stepped or slewed movement between complete parameter states.
- Independent patterns and rates for oscillator and filter slots.
- Audio-rate slot sequencing.
- Parameter locks for keeping selected controls outside slot movement.
- 350 factory presets.
Currents & Nostalgia is designed to cover traditional subtractive synthesizer sounds while using its slot systems to create changing, sequenced and evolving patches without requiring separate modulation programming for every parameter.
Pricing & Availability
Currents & Nostalgia is available from 9 November 2026 for €89 including 25% Danish VAT. The final price varies according to applicable local taxes. It supports macOS 12 or later and Windows 10/11, in AU and VST3 formats. A 30-day refund policy is included.
Product video: YouTube.com/watch?v=lOrl5Cs5Ig8
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