Phoscyon 2

Name: Phoscyon 2
Price: 119 USD
Author: D16 Group

by D16 Group · Synth · TB-303 bass line emulation

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Phoscyon 2 is D16 Group's emulation of the Roland TB-303 bass line, rebuilt from scratch with a redesigned signal path.

It pairs the 303 voice with a classic-or-modern pattern sequencer, an arpeggiator and 19 distortion models, and exports patterns as MIDI by drag and drop.

Best for: Bass, Keys & Synths, Sound Design. Genres: Electronic & EDM, Hip-Hop & Trap, Lo-Fi.

Keywords: hardware emulation, sequencer, basses, classic, arpeggiator, modern, analog, 80s, inspired by, polyphonic, preset-driven, sound design, subtractive, vintage.

What it does

Phoscyon 2's tagline is "Get the last 303": an emulation of the silver box with completely rewritten code, plus sequencing and effects the hardware never had.

303 emulation: a redesigned signal path, calibration parameters to mimic unit-to-unit variation, and a 303-style vibrato.
Sequencer: two editing modes (classic and modern) with slides and accents, plus live override for Accent, Slide and Vibrato.
Arpeggiator: template-based pattern generation for quick acid lines.
Distortion and effects: 19 distortion models based on well-known hardware and a reorderable insert effects chain.
Workflow: drag-and-drop MIDI export, light and dark themes, several UI sizes, MIDI Learn and over 800 presets and patterns.

The current version is 2.1.0, at sample rates of 44.1 kHz and up.

Source: D16 Group product page

When to use it

Phoscyon 2 is a more fully featured acid box than its nearest alternatives on the site, Kreuzberg Audio KA-303 and TAL-BassLine-101, with a deep sequencer, arpeggiator and 19 distortions built in; pick TAL-BassLine-101 for a cheaper SH-101-style mono bass, or a general synth like Diva if you want 303 tones as just one option among many.

Best for: acid lines, squelchy basses and sequenced 303 patterns, and using its sequencer to drive other instruments via MIDI.
Genres: acid house, techno, electro, trance and experimental hip-hop.
Look elsewhere if: you want a polyphonic synth.
Standout: the sequencer with classic and modern editing modes and drag-and-drop MIDI export.

What producers say

Reviewers and users rate it highly for sound and sequencing; the main complaints are small workflow limits.

MusicTech (2022): Adam Douglas gave it 9/10, saying the 64-step sequencer mode makes entering notes "a complete breeze."
Computer Music / MusicRadar (2022): called it an "Excellent emulation" and "A hugely pleasurable and rewarding plugin."
KVR users: 5/5 reviews call it "the best 303 emulator imo" (2023), and one (2026) uses the sequencer to drive other MIDI plugins.
Gripe: MusicTech wanted to move the distortion in the signal chain; Computer Music noted there is "No stand-alone version."

Where to buy

Best Service: $119
Plugin Boutique: $119
PluginFox: $135
AudioDeluxe: $135
D16 Group: $135.12 (Listed at €119; converted at €1 = $1.1355 (ECB rate, 29 Sep 2026))

Tutorials and reviews

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