https://bedroomproducersblog.com/2025/12/13/synthmaster-one-free-2025/

Great little synth. Worth picking up. I made a bunch of SynthWave presets available in the public online database!

Just wanted to share the news here.

Happy holidays AS forum.

 

The Cyberspace Soundset by HO for the KV331 Audio SynthMaster One VSTi

Info and Free Download: www.kvraudio.com/product/the-cyberspace-soundbank-by-sonic-sirius

 

Last Day Folks!
Last Chance To Grab It For FREE!

Link:
https://www.kv331audio.com/synthmasterone.aspx

 

I got it and can't shake the feeling my KV311 dreams will be somehow violently shatterred in yet a new more painful way I haven't experienced yet somewhere down the line.

I wonder if it calls home and farms out my CPU or something.

They used to sell it with a mostly nakid lady in the ads, and I miss her.

Can it have the cool old green theme?

I am very happy you shared this. fwiw

 

Last edited: Jan 4, 2026 at 10:34 PM

It seems to only offer me a Mac version. Too bad.

 

That dont make no sense mon. Maybe it senses your system. I got (and was only offerred) WIN

 

It's both Lois, you can switch between Mac & Cheese. I mean PC. And download what you want.

Click "User Area" then login using your e-mail & serial key then click "Downloads"
Remember to also download "License File" & After Installation copy "SynthMasterOneLicenceKey.txt" into -> Documents/SynthMasterOne

 

Last edited: Jan 5, 2026 at 2:01 AM

What is the size of the install for this ?
I can't remember how I got these 2:

SynthMaster 3 Free Player_v347_rev16750
- SynthMaster3PlayerFreeSetup - 758,944,244 bytes

synthmasteronewindowssetup_rev16290
- SynthMasterOneSetup - 333,033,016 bytes

 

Yeah. After unpacking from zip the size of it is 317 MB (bytes: 333 033 016)

 

Green theme? Naked lady?
I think you mixed up the synths.
"KV331 Synthmaster" & "KV331 Synthmaster One" are different synths.
Synthmaster got versions v1 & v2 & recently v3 and Synthmaster One was released once in 2017

 

@Synthia James .. Thanks. When I originally tried to input my supplied serial it wouldn't take and the Mac version was only available. Now it was accepted and was able to choose the Window iteration.

 

Is it only me? Or this synth is Decent!

3 presets from me:

Witch House Type Lead

Preset Download:
https://pixeldrain.com/u/9Gs73XGe


Plucky Trance Arp

Preset Download:
https://pixeldrain.com/u/6GhBWTSG


Trance Supersaw Lead

Preset Download:
https://pixeldrain.com/u/ufqW5eCd

 

kind of bummed that i didn't catch this post before it was too late. oh well. it's not like i don't have 100 other synths that i haven't even installed yet.

 

Can this also be used as an effect box ie. process external audio input ?

 

Can be. VST2 has additional FX version as audio effect. VST3 has input.