SSL Native X-Phase is an all-pass filter plugin designed to provide precise control over phase alignment in audio signals. Developed by Solid State Logic, a renowned name in professional audio equipment, X-Phase offers a sophisticated solution for addressing phase-related issues in recording and mixing. The plugin employs an intuitive interface that allows users to apply frequency-specific phase shifts without altering the gain of the signal. This makes it particularly useful for correcting phase problems that can occur when using multiple microphones, such as drum overheads and close mics. X-Phase also includes a delay section for broader time alignment, enabling users to fine-tune the timing of their audio signals. The plugin supports both mono and stereo operation, making it versatile for various mixing scenarios. With its high-quality response and manual control options, X-Phase aims to be an essential tool for audio professionals seeking to achieve phase coherence and improve the overall clarity and impact of their mixes.
Pros:
• Intuitive interface with clear visual feedback
• High-quality all-pass filter with precise frequency control
• Versatile delay section for time alignment
• Supports both mono and stereo operation
• Minimal CPU usage for efficient performance
Cons:
• Relatively high price point compared to some competitors
• Limited preset options for quick problem-solving
SSL Native X-Phase boasts a comprehensive set of features designed to give audio professionals granular control over phase alignment. At its heart is the all-pass filter, which allows users to apply a phase shift at a specified frequency within the signal. The frequency control ranges from 20 Hz to 20 kHz, covering the entire audible spectrum. This wide range enables precise targeting of problematic frequencies, whether dealing with low-end rumble or high-frequency sibilance.
The Q factor control adjusts the slope of the phase correction curve, allowing users to fine-tune the width of the affected frequency range. This proves particularly useful when dealing with complex phase relationships between multiple audio sources. The plugin also offers a 2nd order option, which inverts the filter response for more dramatic phase adjustments.
X-Phase includes a dedicated delay section that operates independently of the all-pass filter. This delay can be adjusted in various units, including seconds, milliseconds, samples, meters, and feet, catering to different user preferences and specific application needs. Fine-tuning buttons allow for precise adjustments, making it easy to align signals with sub-millisecond accuracy.
The plugin’s interface provides clear visual feedback through its phase response graph, which updates in real-time as parameters are adjusted. This visual representation helps users understand the impact of their changes and identify potential phase issues quickly. Input and output meters with corresponding level controls ensure proper gain staging throughout the signal chain.
X-Phase offers both left and right channel processing for stereo signals, with a link option to apply identical settings to both channels simultaneously. This feature streamlines the workflow when working with stereo sources that require consistent phase treatment.
The plugin includes an A/B comparison feature, allowing users to quickly switch between two different sets of settings. This functionality is invaluable for making informed decisions during the mixing process, as it enables instant comparisons of different phase alignments.
X-Phase also incorporates a global bypass switch, which provides a true bypass of the plugin for accurate before-and-after comparisons. This feature is crucial for assessing the impact of phase adjustments on the overall mix.
When compared to other phase alignment tools on the market, SSL Native X-Phase stands out for its clarity of purpose and ease of use. While plugins like Waves InPhase and UAD Little Labs IBP offer similar functionality, X-Phase’s interface is arguably more intuitive, with its large, easily readable controls and real-time visual feedback. In terms of sound quality, X-Phase holds its own against premium offerings from Universal Audio and Waves, delivering clean and transparent phase adjustments without introducing unwanted artifacts. However, some users might prefer the analog modeling and additional features found in plugins like the UAD Little Labs IBP, which emulates hardware phase alignment tools.
Compared to more budget-friendly options like Melda Production’s MPhaseShifter or Voxengo’s PHA-979, X-Phase offers a more polished user experience and potentially higher sound quality, albeit at a higher price point. The SSL brand name also carries weight in professional circles, which may be a consideration for some users. Where X-Phase truly excels is in its balance of precision and simplicity. Unlike some competitors that offer a plethora of features that can be overwhelming, X-Phase focuses on doing one thing exceptionally well, making it an attractive option for users who prioritize efficiency in their workflow.
This plugin is best for:
• Audio engineers working with multi-microphone setups
• Mixing professionals seeking to improve stereo imaging and clarity
• Mastering engineers fine-tuning phase relationships in final mixes
• Live sound engineers aligning multiple input sources
• Music producers addressing phase issues in layered recordings
SSL Native X-Phase is a powerful and focused tool that addresses a specific but crucial aspect of audio production: phase alignment. Its intuitive interface, high-quality processing, and versatile feature set make it a valuable asset for professionals working across various audio disciplines. The plugin excels in providing precise control over phase relationships, allowing users to correct issues that can degrade sound quality and stereo imaging. While its price point may be a consideration for some, the quality of results and efficiency it brings to workflows can justify the investment for serious audio professionals. X-Phase’s ability to make subtle yet impactful adjustments to phase and timing can significantly enhance the clarity, depth, and overall quality of mixes. Its straightforward approach to a complex problem makes it accessible to both experienced engineers and those new to phase alignment techniques. For anyone dealing with multi-microphone setups, stereo recordings, or any situation where phase coherence is critical, SSL Native X-Phase proves to be a reliable and effective solution.