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Hum808 X

Synth (Hybrid) Plugin by Callybeat
Hum808 X Hum808 X Hum808 X Hum808 X Hum808 X Hum808 X
Hum808 X by Callybeat is a Virtual Instrument Audio Plugin for Windows. It functions as a VST Plugin and a VST 3 Plugin.
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Overall: 867   851

30-Day: 981; 7-Day: 1163; Yesterday: 1906


It is a synthesizer designed to be easy to use thanks to its all-in-one interface.

The reading of the signal is possible thanks to its spectrum analyzer and
his oscilloscope that allows us to shape the sound with great ease from both a technical and creative approach.

Its three oscillators together with the sampler can operate in subtractive or FM synthesis according to the configuration of each user, facilitating sound experimentation with unimaginable ranges., .

A quick example.

1. Load the default preset
2. On the master panel, set Carrier freq with Osc1 - Osc2 and Mod to Sampler, activate the FM button
3. Drag a swatch of a bell onto the swatch and activate it
4. Activate the Pitch Shifter with a mix of 10% in the Envelope tab
5., Adjust the modulation from -3.84 to 3.80 st in 2 steps
6. Remember to Activate the Mod Pitch and the Loop button
7. Increase the vocals, unison and spread to your liking and listen to your patch.

And to finish creating your idea you can process your sound with its 5 included effects...

Let's have fun designing something with the Hum808x.

These are its main characteristics:

  • Additive Synthesis and FM.
  • 3 oscillators with 5 waveforms.
  • 1 sampler with 90 useful samples in FM synthesis, Keytraking, Root Note Selector.
  • Maximum 16 unison voices, extended voices, portamento with slide time adjustment.
  • 1 ADSR for each Generator and one global.
  • Time, gain and filter modulators.
  • Modulation to DAW synchronized in time.
  • 16 types of filters with modulators.
  • 5 effects: distortion, compression, limiter, reverb, delay.
  • 1 parametric equalizer.
  • 5 Zoom settings for GUI.
  • Midi Learn by left clicking and moving around the buttons, knobs and pitch wheel for any MIDI controller.
  • Assign left-click CC to buttons, knobs, and pitch wheel for any MIDI controller.
  • Spectrum Analyzer, Oscilloscope.
  • Speed response adjustment.-.
  • 450 presets.


Freeware y código abierto (GPL3).



{See video at top of page}

Version history.

July 1, 2021
V1 - First version.

July 25, 2021
V1.01 -

Now available in VST3.

Bug fix:

Fix Midilearn fix on master knob
Fix Midilearn correction on Gain Osc 1 and 2 knob
Fix Midilearn correction in Gain Osc 3 controller
Fix Midilearn fix on Pitch Bend fade.

April 16, 2022.

V1.03 -

Correct at zero crossing
Fix gain knobs for all generators
New distribution in oscillators
Window for each oscillator
New preset manager
New portamento option with slide time
Now it is possible to activate all generators simultaneously
Enclosures for all generators
Pitch shifter for each oscillator
Keytracking for sampler
Define Arial as font function
Legato for all modulators
GUI redesign.

Latest User Reviews

Average user rating of 4.67 from 3 reviews

Hum808 X
Reviewed By Stillow
July 31st, 2021

Hello !, I installed this VST in Flstudio very good sound, I like the ZOOM, the effects seem to be in chain, midilearn is very easy to configure in my controller just right click move and voila., I think the pitch bend control is small but can be configured by midilearn., the sampler I do not quite understand how it works but mixing an oscillator with a sample by FM synthesis generates very interesting sounds, I am surprised are the amount of functions that this VST has., bad points: I don't know Because in the sinusoidal waveform there is a kind of click in realse of and I noticed this in several synthesizers I still do not understand why it is but designing an 808 from a triangular waveform this click disappears., I think that a manual is something that is needed for this plugin., Congratulations very good job to the developer I hope you update often this VST that I see has a lot of potential., Thanks for this contribution to the community.

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Hum808 X
Reviewed By rcrath
July 25th, 2021

Excuse my English plz! It is preferable to my Spanish! This plugin, a bass and bass drum synth along the lines of future audio's sublab but free just needs a few bug fixes and missing features to become oftop line plugin I would have loved to vote for in KVR DC 21, but the problems are dealbreakers for me...mayb a post-contst fix? Key trouble is that there are zero crossing problems with the signal processing that produce loud clicks that cannot be attributed or used as bass drum clicks. I thought tweaking the envelopes might clear the problem but I was unable to get clean results even with longer attack times on the filter and the amplitude. Missing features: a noise osc, glide/glissando, adjustable pitch bend settings so that I can get my controller to work with the synth's PB. I could not get my samples working in the sampler although they showed up in the graphics, and I think I am missing simething because samples seem to work fine in the presets. The signal flow is difficult to figure without a manual. I tried watching the vids, but my spanish was not good enough. Even a signal flow chart would be welcom. It alseo seems to me likke the sample button should be up top as a tab rather than in its own space, since all the other stuff up top uses the same space.This sounds super critical but it is not---all of these are fixable and I want to encourage the dev to do so (or show me what I am missing!), as the sounds that do come through, both on bass and on bass drum, have a lot of potential, and the synth looks like it has a lot of versatility, even perhaps beyond bass stuff, but I could not get to that because of the problems. Please keep at this one! Thanks and sorry to be a bit negative.

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Hum808 X
Reviewed By darioarizmendi
July 5th, 2021

Excelente creación de un desarrollador latinoamericano. Esperamos que siga creciendo el círculo de creadores en lugares de habla hispana.

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Comments & Discussion for Callybeat Hum808 X

Discussion: Active
3 July 2021 at 2:35pm

I'm really impressed. It looks good, it sounds good and it's very intuitive. Thank you for this gift.


4 July 2021 at 12:20am

On the contrary, thank you for dedicating a little of your time to evaluate the performance of Hum808X. I hope you enjoy it in your creative moments :).

31 July 2021 at 7:43pm

Congratulations very good job to the developer I hope you update often this VST that I see has a lot of potential just have to correct some bugs., Thanks for this contribution to community.

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