X903 is a versatile compressor/limiter plug-in inspired by a revered 1980s dynamics processor known for its speed, precision and punch.

With lightning-fast response times, X903 is ideal for transient-heavy material such as drums, vocals and guitars. Its VCA-based topology ensures tight, consistent compression with minimal colouration while retaining the punch and definition of the source, and additional ratio and release settings range from subtle smoothing to aggressive peak limiting. The hardware that inspired it was a rack-mounted version of a popular console module, celebrated for its reliability and flexible dynamic control, which shaped the sound of countless hit records through the 1980s and beyond. Antelope Audio’s recreation brings that fast, musical behaviour accurately into the digital realm.

Features

• Classic VCA compressor/limiter with fast response
• Ideal for drums, vocals and transient material
• Transparent compression or aggressive peak control
• Wide range of ratio and release settings
• Recreation of an iconic 1980s dynamics module

Technical details

• Type: Plug-in (VCA compressor/limiter)
• Operating systems: Windows, macOS
• Plug-in formats: VST3, Audio Unit (macOS only), AAX
• Architecture: 64-bit
• Licensing: iLok (iLok Cloud or iLok USB key), internet connection required for activation
• Content: Native plug-in (no additional hardware needed) plus a Synergy Core real-time licence, assigned to your Antelope account on code redemption

System requirements

• macOS 11 Big Sur or later (recommended: macOS 14 Sonoma or later)
• Windows 10 or 11 (64-bit, with the latest Microsoft updates)
• Processor (Mac): Intel or Apple Silicon
• Processor (Windows): Intel i3 or AMD Ryzen 1st generation or later
• RAM: 8 GB
• Disk space: 1 GB
• Stable internet connection required for download

The licence is registered with the manufacturer at https://en.antelopeaudio.com/get-started-native/. You will receive your serial number and the download link by e-mail immediately after purchase.