Two virtual instruments sampling 11 iconic analog mono synths from 1974–1995, adding a multimode filter, second oscillator, XY pad, 16-voice unison, and arpeggiator for modern sound design.
Purpose and Sound Core
Retromod LoFreq Classic by Tracktion is a virtual instrument duo built on meticulous samples of eleven legendary analog mono synthesizers produced between 1974 and 1995. The collection includes the Oberheim SEM, Korg MS-20, Roland TB-303, ARP Odyssey, and others, capturing the authentic character of each original unit.
Beyond faithful sampling, the instrument adds a contemporary edge. A secondary multimode resonant filter shapes timbre dynamically, while a second oscillator thickens the sound. An XY pad injects subtle to aggressive coloration, making the classic tones feel fresh and versatile for modern productions.
Key Capabilities
The engine supports up to sixteen voices of unison, allowing massive, layered sounds that evolve from thin to enormous. An integrated arpeggiator generates rapid patterns, perfect for pulsing basslines, searing leads, and thick pads. The combination of sampled authenticity and modern synthesis tools encourages experimental sound design.
Each sampled instrument was captured using high-quality outboard gear, including Avalon U5, A-Design Reddi, and Phoenix Audio NiceDI, ensuring pristine signal fidelity. The sampling process preserves the quirks and nuances of the original synths, giving producers a tactile, analog feel within a software environment.
Workflow Integration
In a typical workflow, users load LoFreq Classic on a MIDI track, select one of the eleven base synth samples, and then sculpt the tone using the multimode filter and second oscillator. The XY pad can be automated to add movement, while the arpeggiator drives rhythmic patterns without external sequencing.
This instrument is suited for genres like techno, house, and industrial, where classic mono synth basslines and leads are staples. The unison mode is ideal for creating wide, detuned pads, while the arpeggiator turns simple chords into intricate sequences. Its hands-on controls reduce menu diving, speeding up creative iteration.
Practical Applications
Producers can use LoFreq Classic to recreate vintage acid basslines with the TB-303 sample, then layer the MS-20 for gritty textures. The XY pad serves as a performance tool, letting live acts morph sounds in real time. The arpeggiator is effective for generating complex patterns quickly, from minimal tech loops to aggressive synthwave sequences.
For sound designers, the combination of unison and filter modulation enables evolving drones and risers. The instrument’s breadth covers both subtle and extreme tonal shifts, making it adaptable for soundtrack work or club productions. While designed for mono synth emulation, the added features push it into hybrid territory.
Key features
- Samples from 11 iconic analog mono synths (1974–1995)
- Secondary multimode resonant filter for tonal shaping
- Second oscillator to thicken and beef up sound
- XY pad for subtle to aggressive coloration
- Sixteen-voice unison for massive layered sounds
- Integrated arpeggiator for rapid pattern generation
- Sampled with premium outboard gear for fidelity
Best for
Best for electronic music producers and sound designers seeking authentic analog mono synth tones with modern flexibility, especially in techno, house, and industrial genres. Its arpeggiator and unison make it a powerful tool for basslines, leads, and pads.