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 RBXL by Sound-Base Audio is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
RBXL - Black Cherry - FFT analysis
RBXL - Default theme - Program browser RBXL - Sinusoidal Spider - Theme menu RBXL - All screens except program browser
Product RBXL
Developer Sound-Base Audio
Price (MSRP)
Type / Tags SubtractiveAMFMRing Modulation
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
System Requirements
Internet connection required for registration
Windows XP/Vista/7/8.1/10
Pentium III or better (or AMD equivalent)
SSE/SSE2 processor support
DAW or host for VST plug-in
ASIO driver recommended
Miscellaneous Information
Copy ProtectionSerial Number
  • Dual seven shape oscillators: 12.5% Pulse, 25% Pulse, 50% Pulse, Saw, Triangle, Sine, Noise.
  • 1 to 64 note polyphony with portamento and slide.
  • 16 step arpeggiator with adjustable oct/semi/fine tuning, gate, and velocity.
  • 16 step mono gate.
  • LFO, sequence, and envelope modulation for 20+ parameters.
  • Low usage reverb, delay, chorus, stereo, and phaser effects.
  • Built in parametric EQ and FFT/scope analysis.
  • Multi slope low-pass, high-pass, band-pass, and band-reject filters.
  • Frequency, ring, and amplitude modulation with frequency syncing.
  • Unison mode with detune and octave spread.
  • User settings and personalization features.
  • Smart mode disables plug-in when inactive to save CPU usage.
  • Program browser to create, modify, and manage programs.
  • Randomization for each separate module.
  • Six different themes included or design and use one of your own.
  • Share your programs and load other users programs via the RBXL program database.

Customers who purchase this plug-in will also get a drum sample pack as a bonus. The sample pack contains 208 samples of both acoustic and synthesized drums. The acoustic pack contains a full recorded drum kit and other percussion with multiple velocities of each instrument. The synth pack contains a full modeled drum kit with about 10 different sounds per instrument.

Made with FlowStone
Latest User Reviews Average user rating of 4.00 from 1 review

Reviewed By AoPenguix
May 22, 2016

The best 10$ I could spend on a synth. Easy to use with many features and beautiful interface. 2 oscillators produce basic saw, square, triangle and sine waveforms which can be further edited in OSC tab. Has all basic FX (Reverb, delay, chorus, phaser) 4 voice unison, 16 step arpeggiator 16 step gate, 3 envelopes (main + 2 customizable) 2 LFOs, 3-band EQ and few more things.Interface is very clear, window size is perfect for my screen and there are few UI skins to choose.

I have just bought it and already love it. It's exactly what I was looking for - simple subtractive synth with all basic features to use along with my other favourite synths like GMS and Harmless. The program bank is rather small though (65 presets).

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Discussion: Active
22 May 2016 at 4:46pm

32-bit only (Flowstone)

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Average user rating of 4.00 from 1 review

Sound-Base Audio
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