discoDSP OB-Xd 3.17 released

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OB-Xd - Virtual Analog Synthesizer$99.00Buy

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OB-Xd 3 captures the legendary Oberheim OB-X sound and takes it further — a complete ground-up engine rewrite with 5.2x more DSP code, SIMD vectorized processing, and modern features that make it competitive with commercial virtual analog synthesizers.

Engine
Data-oriented SIMD architecture (AVX2 / NEON) processes 4-8 voices simultaneously per CPU cycle. BLEP + BLAMP anti-aliasing, 4-pole ladder filter with push mode self-oscillation, DC blocking, and configurable brightness control. Adaptive oversampling up to 4x with intelligent sample rate detection.

Polyphonic Unison
Stack up to 16 detuned voices per note for massive supersaw-style pads and leads while maintaining full polyphonic playability. 128 voice slots eliminate voice stealing in complex passages.

Analog Mode
Per-voice component tolerances simulate vintage hardware variance — warmer, thicker sounds with natural filter wobble and subtle timing differences between voices. Configurable per bank.

Envelopes
Circuit-accurate RC modeling with adjustable logarithmic-linear attack shape. From gentle pad swells to percussive plucks, with independent shape control for filter and loudness envelopes.

Additional Features
Advanced preset search across all disk folders. Bi-directional MIDI control with MIDI Out and MIDI Learn. PW offset, PW envelope, and PW envelope both controls. MTS-ESP micro-tuning support. Full backward compatibility with 2.x presets.

Formats
Windows 10+ (AAX, VST2, VST3, Standalone) · macOS 10.14+ (Universal Binary 2, AAX, AU, VST2, VST3, Standalone) · Linux Ubuntu 20+ (VST2, VST3, LV2, Standalone) · iOS via App Store.

Free version: Standalone, AU, VST2, VST3 — fully functional, non-commercial use.
Registered version: Oversampling (2x/4x), commercial rights, AAX, LV2, technical support.

Download & Info: https://www.discodsp.com/obxd/

OB-Xd 2.x vs 3.x Technical Comparison: https://www.discodsp.com/obxd/comparison/





https://www.youtube.com/playlist?list=P ... eO4WtvhC-S
Last edited by george on Sat Feb 21, 2026 7:46 am, edited 2 times in total.

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Cheap tactics - new thread for each update…

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Nice update for the Linux guys George!

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I believe there is something wrong with the Ilkka Rosma Dark skin.

In the coords.xml file it says:

<VALUE NAME="loudnessEnvelopShape" x="844" y="110" w="52" h="21" tooltip="1"/>
<VALUE NAME="filterEnvelopShape" x="844" y="234" w="52" h="21" tooltip="1"/>

Shouldn't the y-values be swapped?

loudnessEnvelopShape ==> y="234"

filterEnvelopShape ==> y="110"


In the Ilkka Rosma Blue skin, though, this is correct.

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e-musician wrote: Mon Apr 21, 2025 1:51 pm I believe there is something wrong with the Ilkka Rosma Dark skin.

In the coords.xml file it says:

<VALUE NAME="loudnessEnvelopShape" x="844" y="110" w="52" h="21" tooltip="1"/>
<VALUE NAME="filterEnvelopShape" x="844" y="234" w="52" h="21" tooltip="1"/>

Shouldn't the y-values be swapped?

loudnessEnvelopShape ==> y="234"

filterEnvelopShape ==> y="110"


In the Ilkka Rosma Blue skin, though, this is correct.
The bug has been fixed in version 3.8.

You are correct regarding the coordinate issue in the Ilkka Rosma Dark skin XML file. The y-values for loudnessEnvelopShape and filterEnvelopShape were inadvertently reversed.

We appreciate your attention to this inconsistency.

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OB-Xd right ?

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OB-Xd 3.10 introduces a refined preset search architecture with improved functionality and an intelligent dynamic pan system featuring new randomization modes. Enhanced macOS integration ensures seamless workflow. Performance improvements include Apple Silicon optimizations and AVX2 vector processing for accelerated mathematical operations on compatible x86 systems.

  • Advanced Preset Search System
    • Fixed preset name label click functionality and resolved parameter type mismatch in search mode.
    • Enhanced search state management to preserve original disk mode settings.
  • Enhanced Pan Preset System
    • Added two new dynamic pan presets:
      • "Random" - Generates completely random pan positions for each voice.
      • "Random OSC" - Creates sine wave-based panning patterns with random parameters.
  • User Interface & Technical Improvements
    • Fixed preset bar bank dropdown not updating after MIDI CC bank change.
    • More native macOS dialogs for better platform integration.
    • Performance optimizations for Apple Silicon and Intel processors.
  • Platform-Specific Updates
    • Enabled AVX2 optimizations on Intel macOS and Linux with universal binary compatibility.
    • Improved compiler optimizations with specialized AVX2 targeting.
OB-Xd 3.10 is a free upgrade for all existing customers and is available as AAX, AU, VST2, VST3, and standalone versions for Windows, macOS, and Linux. More details and download information can be found at OB-Xd page.

Disclaimer: We monitor this thread for feedback and critical issues. For technical support, account problems, or detailed assistance, use our support system at https://www.discodsp.com/support/

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There seems to be a bug in the new version: In my system (MacBook Air 2, macOS Sonoma, Logic Pro 11.2.1) it is not possible to introduce text into the new preset search bar of the plugin (AU) version of my free version of OB-Xd 3.10 (and the Disk button is now unclickable). But in the standalone version it seems to work.

I found a (somewhat cumbersome?) solution:
It is not possible to introduce text directly into the search bar.
You have to control click the search bar. Then a text tool appears and it is possible now to introduce text into the search bar.
This procedure seems necessary for every preset search.

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robomusic22 wrote: Tue Jul 15, 2025 10:32 am [...] and the Disk button is now unclickable [...]

Confirmed. Same here on Windows. Both in standalone and VST2/VST3 versions.

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Thank you for the report. Please redownload the installer with the 3.10.1 build.

Windows users, if you encounter a SmartScreen or Windows Defender warning, it is advisable to wait until Microsoft verifies the validity of the new builds in approximately 24 hours or disregard the warning.

Bugfixes
  • Fixed text selection issue in preset search dialog on macOS - text is now automatically selected when the dialog appears.
  • Resolved issue with disk mode button behavior during preset search operations.
  • Improved preset search functionality to better handle disk mode state transitions.
https://www.discodsp.com/obxd/

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discoDSP wrote: Wed Jul 16, 2025 11:32 am Thank you for the report. Please redownload the installer with the 3.10.1 build.

Windows users, if you encounter a SmartScreen or Windows Defender warning, it is advisable to wait until Microsoft verifies the validity of the new builds in approximately 24 hours or disregard the warning.

Bugfixes
  • Fixed text selection issue in preset search dialog on macOS - text is now automatically selected when the dialog appears.
  • Resolved issue with disk mode button behavior during preset search operations.
  • Improved preset search functionality to better handle disk mode state transitions.
https://www.discodsp.com/obxd/ (https://www.discodsp.com/obxd/)
Thanks for partially fixing the bug: The Disk Mode button is now clickable again on my system (MacBook Air 2, macOS Sonoma, Logic Pro 11.2.1), but the text selection issue I reported on the 15 of July remains unchanged.

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discoDSP wrote: Tue Jul 15, 2025 6:49 am OB-Xd 3.10 introduces a refined preset search architecture with improved functionality and an intelligent dynamic pan system featuring new randomization modes. Enhanced macOS integration ensures seamless workflow. Performance improvements include Apple Silicon optimizations and AVX2 vector processing for accelerated mathematical operations on compatible x86 systems.
Why did you even start a new thread? Please close this one.
I can't lie to you about your chances, but... you have my sympathies.

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OB-Xd 3.13
  • Fixed popup menu positioning and font scaling issues
    • Forced all popup menus to always appear below their target components.
    • Removed conditional upwards positioning logic that caused menus to appear above buttons.
    • Fixed font scaling for preset popup menus on Windows/Linux by applying CustomLookAndFeel.
    • Corrected getPopupMenuFont() to multiply base font size by scale factor for proper UI scaling.
    • Changed DiskBrowser native menu font parameter from small to standard size on macOS.
    • Updated PopupMenu framework code to latest version with improved HiDPI positioning algorithms.
  • Fixed Windows HiDPI scaling for license dialogs in plugin builds
    Added proper plugin editor reference to DialogWindow LaunchOptions to ensure correct HiDPI scaling on Windows. Dialogs now inherit the scale factor from the plugin editor component and center correctly.
    • Set componentToCentreAround to plugin editor in both activation and purchase dialogs.
    • Added fallback search to find editor in plugin wrapper hierarchy.
    • Replaced centreWithSize with centreAroundComponent for proper positioning.
    • Dialogs now scale correctly at 200% (2x) on Windows HiDPI displays.
https://www.discodsp.com/obxd/

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i have this question, im thinking about buying it as i use it now for so long. but what are the limitations of using this new one over the old interface one which i'm still using as they say you have to pay for this current one.

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OB-Xd 3.13.1
  • macOS File System Improvements
    • Application Support Directory: Changed user data storage location on macOS to follow Apple's guidelines, using ~/Library/Application Support/discoDSP/OB-Xd instead of Documents folder.
    • Eliminates Permission Dialogs: Avoids macOS permission dialogs by using the standard Application Support location for license files, settings, presets, banks, MIDI configs, and themes.
  • Stability Fixes
    • Asset Missing Fix: Added null check for overSamplingLabel before adding listener in editor constructor to prevent issues when plugin assets are not found.
    • Graceful Degradation: Plugin now shows an error dialog instead of shutting down when essential assets are missing from disk.
OB-Xd 3.13.2
  • Performance Improvements
    • Packed Assets System: Implemented new packed assets format saving up to 50% memory usage for improved performance and reduced plugin footprint.
  • Build System Updates
    • Visual Studio 2022: Migrated Windows build system from Visual Studio 2019 to Visual Studio 2022 for improved compiler support and modern C++ standards.
https://www.discodsp.com/obxd/

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