Advanced Preset Search System: 3.10 has a new search functionality that scans all disk preset folders recursively with intelligent duplicate detection. Search across your entire preset library instantly, with smart indexing that handles duplicate preset names by showing "(1)", "(2)" etc. Navigate through search results with seamless index-based browsing.

Enhanced Performance & Optimization: OB-Xd 3.x features a completely rewritten audio engine using modern SIMD technology (AVX2 for Intel, NEON for ARM). Unlike traditional per-voice processing, our data-oriented architecture processes 4-8 voices simultaneously per CPU cycle, delivering exceptional performance and efficiency across all modern processors.

Native SIMD optimization automatically detected at runtime ensures optimal performance whether you're running Intel (AVX2) or ARM (NEON) processors. Cross-platform efficiency without compromise.

Unlock Bi-Directional MIDI Control: Now with MIDI Out for true bi-directional communication. Mirror your MIDI CC from XML templates or create custom setups with MIDI Learn. When MIDI Out is enabled, it sends CC output to channel 1 (for all channels) or the selected channel. Ideal for controllers like the TouchOSC template or SFC-OB, enhancing your control and creativity.

New Unison Voices: Since version 3.14, unison mode supports polyphonic behavior, allowing you to play thick chords with stacked voices per note.

Polyphony Voices controls the number of simultaneous notes you can play, while Unison Voices controls how many voices stack per note (the 'thickness'). You can choose from 1 to 16 voices, where each additional voice adds complexity and depth to the sound.

Play massive pads with 4-8 note chords using 2-4 stacked voices each, or set polyphony to 1 voice for classic mono unison leads. For the best effect, use this with the spread control set at half or higher to clearly distinguish the layered voices. This parameter is ideal for enhancing pads, leads, and basslines, offering a thicker, more immersive sonic character.

Enhanced Oscillator Features: Featuring advanced DSP with anti-aliasing algorithms that handle waveform discontinuities at the sample level. This modern approach makes oversampling optional rather than required, significantly reducing CPU overhead while maintaining pristine audio quality even at standard sample rates.

The update introduces new Pulse Width Modulation Controls for intricate sound shaping, enhancing the sonic possibilities of the oscillators.

• PW Offset: Adjusts the pulse width of Oscillator 2 with a unipolar knob based on the PW knob's setting.
• PW Env: Modulates Oscillator 2's pulse width with the Filter Envelope.
• PW Env Both: 1+2 button allows the Filter Envelope modulation to affect both oscillators' pulse width.

Advanced Filter Capabilities: Vectorized batch processing with sophisticated 4-pole ladder topology and precise damping algorithms. The architecture leverages cache-friendly data layouts for maximum CPU efficiency while preserving the classic analog character.

Including Self-Oscillation, Filter Falloff Adjustment, and Adjustable Filter Envelope Shape, providing more control and variety in sound filtering.

• Self-Oscillation: The 12dB filter now self-oscillates at high resonance levels.
• Filter Falloff Adjustment: A new FLT CMP knob in the Voices section influences cutoff scaling.
• Adjustable Filter Envelope Shape: Blends between exponential and linear shapes for the attack.
• Filter Envelope Inversion: A new button for inverting the Filter Envelope output.
• Enhanced Filter Keytracking Control: A refined knob offers precise control over the filter's response to keyboard tracking.
• Level Difference Knob: Ensures consistent audio output during filter adjustments.

Refined Attack Envelope Shape: This feature introduces a sophisticated logarithmic-linear attack slider, offering unparalleled flexibility for dynamic sound sculpting. The slider enables users to precisely control the attack phase of sounds, ranging from subtle, gentle slopes for softer onsets to sharp, aggressive inclines for more pronounced attacks. This dual-mode approach allows for a wider array of sonic textures, providing musicians and producers with the tools to tailor the attack characteristics of their sounds, whether they're aiming for a natural, smooth progression or seeking a more abrupt, impactful onset.

Circuit-Accurate Analog Modeling: The envelope system faithfully emulates vintage analog synthesizer circuitry, specifically modeling the charging behavior of capacitor-resistor networks found in classic instruments like the Oberheim OB-X and OB-Xa. Unlike simple linear envelopes that ramp mechanically, this implementation recreates the organic, exponential curves of hardware, delivering the warm transient response that defined the golden era of analog synthesis.

Intelligent Shape Control: The attack shape slider seamlessly transitions from gentle to aggressive using logarithmic scaling that feels natural and musical under your fingers. At gentle settings, envelopes rise smoothly—ideal for lush pads and evolving textures. At moderate settings, you get the classic "hardware curve" with natural punch and presence. At aggressive settings, attacks snap instantly with percussive impact, perfect for plucks, stabs, and rhythmic leads.

Analog Authenticity: Each voice features subtle timing variations that replicate the component tolerances of vintage hardware, eliminating the sterile uniformity of digital synths. The system provides independent shape control for both Filter and Loudness envelopes, enabling complex sonic evolutions—such as snappy filter attacks combined with smooth amplitude swells—that bring unprecedented expressiveness to your sound design.

Oversampling & Additional Features: Oversampling Selection: Available in the registered version, offering options for different sound quality requirements including no oversampling (1x), 2x, or 4x to balance CPU usage and audio fidelity.

Seamless Preset Import: OB-Xd 3.x imports presets from OB-Xd 2.x and forks, making migration and library management effortless. Use your existing preset collections without conversion hassles.

MIDI and Preset Bar Enhancements: Improved usability and functionality, making it easier to manage and access MIDI controls and presets.

LFO Synchronization: Ensures perfect timing by syncing the internal LFO with your DAW's BPM.

Understanding the importance of legacy projects, we offer and maintain 2.x build of OB-Xd for those who need compatibility with older projects, with no commercial limitations and for all audio formats (AAX/AU/VST2/VST3/Standalone) without limitations. This ensures that our users can continue to work seamlessly on their existing creations without any compatibility issues.