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Synth (Analogue / Subtractive) Plugin by D16 Group
No Longer Available
Phoscyon by D16 Group is a Virtual Instrument Audio Plugin for macOS and Windows. It functions as a VST Plugin and an Audio Units Plugin.
System version: Win 7, Win 8, Win 10
Software: VST compatible host application (32-bit or 64-bit)
System version: OS X 10.7 to OS X 10.15
Software: AU / VST compatible host application (32-bit or 64-bit)
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246 KVR members have added Phoscyon to 21 My KVR groups 290 times.
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Overall: 5755   4333   5423

30-Day: 4650; 7-Day: 3718; Yesterday: 6650

Phoscyon is an emulation of the Roland TB303, brought up to date with lots of additional features.


  • 2 authentically emulated analog oscillators (saw/square).
  • "Screaming" 18db/oct low pass filter with absolutely no self oscillation.
  • Filters equipped with transistor amplitude clipping.
  • Perfectly scaled knob ranges.
  • Additional synthesis controls expand the synthesizer's range.
  • Built-in arpeggiator:
    • 7 predefined chords and 1 user definable chord.
    • Arpeggiator tempo multiplier (1, 1.5, 2, 3, 4, 6).
    • Arpeggiator repeat feature.
    • 4 arpeggiation patterns (Up, Down, Up-Down, Random).
    • Defined offsets of octaves to work with.
  • Built-in distortion effect (equivalent to a transistor amplifier with equalization):
    • Tailored for the Acid Bassline sound.
    • Equipped with signal routing (Dist <=> Eq).
  • Several Programming options:
    • Internal sequencer (128 patterns, each pattern up to 16 steps, each step defined with Note, Gate, Accent, and Slide values).
    • External mode (compromise).
    • Play Live mode.
  • Powerful randomizer:
    • Generates patterns from user defined range of notes, user defined chords or predefined chords (Major, Minor, 7th, m7th, M7, m7-5, DIM).
    • Generates random values for Note, Gate, Accent, and Slide attributes.
    • Allows user to define attribute frequency.
  • Fully controllable via MIDI CC.
  • Precise synchronization with host sequencer.

{See video at top of page}

Latest User Reviews

Average user rating of 4.00 from 1 review

Reviewed By dj ray
November 16th, 2006

Ah, the classic TB 303! The squelchy, burping, warbling screaming TB 303! It is a legend amongst synthesizers, possibly even more so than the Mini. There is just something about that sound that gets our hands up in the air every time! And, like the Mini, the silver box remains one of the most emulated synths in software. Most of those emulations have been rather funny, while some were genuinely good. Rebirth got the ball rolling, and Muon and Audio Realism brought the 303 into the VST realm, along with many many freeware synths of varying quality. While Rebirth may not be considered as ‘serious’ an emulation in this day and age, Audio Realism did a pretty good job right? So do we really need another 303 emulation? Well, how should I say this? Hell yeah. Especially when it sounds disturbingly like the real McCoy. There are many electronic musicians looking for that holy grail in 303 emulation, and this, my friends may very well be it! Just download the demo, give it a go and you won’t but help notice the similarities. Both square and saw waves have that distinctive 3 dimensional character missing in other emulations and the filter is, again, very convincing; the 303’s bubbling basslines and screaming squelches can be faithfully recreated. D16 have nailed the wave shapes and filter, no question about it! Now while the original 303 still fetches ridiculous prices on the second hand market by virtue of its sound, it is still a fairly unremarkable little synth. D16 have taken the liberty of pimping out their 303 with a wicked distortion effect as well as a flexible little arpeggiator. Additionally, the synth boasts additional envelope controls that offer a bit more sound shaping flexibility ala the Devilfish mod for the 303. I have little to complain about here. I’ve long been looking for the ultimate 303 emu, and Phoscyon has delivered with (in my opinion) the 303 to beat! The GUI is a sight to behold, and the customer service is second to none! Plus, with the recent price drops, you can now get your hands on authentic acid for silly money. C'mon, everyone does need a 303...
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