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At Antelope Audio, we’ve built our reputation on delivering the sound professionals trust. With the X902, X903, and X904, we’re bringing you the signature precision, musicality, and control that have made our tools staples in high-end studios worldwide. Meet the X902 De-Esser, X903 Compressor/Limiter, and X904 Noise Gate — three meticulously engineered plugins that recreate the iconic tools that defined a generation of professional audio.
Now available in VST3, AU, and AAX formats as part of our Synergy Core Native library, this trio delivers studio-proven control, streamlined for your modern DAW workflow.
Three Classics. One Cohesive Suite.
The 900 Series Suite is a digital resurrection of legendary studio tools. Known for their punchy compression, smooth de-essing, and surgical noise gating, these processors have been staples in vocal chains, drum buses, and broadcast racks since the era of analog dominance.
Smooth, Surgical Sibilance Control
Sibilance doesn’t stand a chance. The X902 De-Esser gives you transparent control over harsh consonants without dulling the performance. With intuitive frequency selection and threshold controls, you can quickly dial in vocal clarity that sounds effortless.
Use the HF Only mode when you want to target just the top-end harshness without affecting the full signal — perfect for taming vocal sibilance without losing body. And with the Audition feature, you can solo the exact frequencies being reduced, giving you total precision and confidence during mix decisions.
Use it to:
- Polish lead vocals in tandem with pitch correction plugins like InTune Performer or InTune Harmony for perfectly tuned and natural vocals.
- Clean up spoken word in podcast and broadcast work
- Gently tame cymbals and bright transients
Workflow Tip: Start your vocal chain with X902, feed it into BAE-1073 for color EQ, and finish with SonaVerb for rich ambiance.
Punch. Glue. Character.
This is dynamic control done right. The X903 compressor/limiter gives you a wide compression range — from light leveling to full-on limiting and even creative negative ratio effects. Perfect for shaping drums, bass, synths, vocals, and more.
X903 also features negative ratio mode — а unique tool for pushing creative boundaries. Instead of just compressing harder, it actually lowers the output as input rises — perfect for creating pumping effects, managing problem transients, or adding a sense of movement and groove to static parts. Think beyond control — this is compression as a sound design tool.
Why you’ll love it:
- Classic VCA-style compression with deep tone
- Fully variable ratios, including negative compression
- Fast, clean attack and release control
The X903 native plugin sounds the same as its Synergy Core Real-Time that is available for all our Synergy Core equipped audio interfaces, such as Zen Quadro Synergy Core. Hear it in action:
Real-World Chains:
- Pair with Gyratec XIV for tone-sculpting on your mix bus
- Use post-InTune Chorus on backing vocals to smooth dynamics and add density
- Use in a parallel chain with Springer Reverb for an ambient drum room effect
Try this: Dial in a 6:1 ratio with medium attack and fast release on snare close mics for instant punch.
Silence the Noise. Shape the Energy.
The X904 Noise Gate goes beyond noise control. Its fast, precise gating and flexible controls make it a powerful tool for cleaning up tracks or sculpting transients.
- PLM (Programmed Latch Mode) lets you mute tracks until audio triggers them
- Sidechain input opens the door to creative rhythmic gating
- Detailed envelope control gives you full command over the gate’s behavior
Best used on:
- Kick and snare mics to eliminate bleed
- Vocals to cut room tone and breaths
- Instruments with custom envelopes
- In a sidechain pair with the BAE-1084 EQ for a tight low-mid cleanup on bass tracks
Power move: Key the X904 gate with a ghost kick track to sync your bass pulses with your drums for ultra-tight grooves
Designed for Real-World Production
These plugins aren’t just faithful recreations — they’re professional-grade tools designed to elevate your workflow and keep you in the creative zone.
Whether you’re:
- Mixing powerful pop vocals with InTune Performer, X902, and Springer
- Tightening up a live kit with X904 and X903
- Producing film dialogue with BAE-1073, X902, and SonaVerb
- Crafting aggressive sound design with X903’s negative ratio modes
…the 900 Series Suite is your new go-to.
Try It Now
The X902, X903, and X904 are available today as part of the Synergy Core Native plugin membership. These are the tools you’ve been waiting for — with the sound you trust, the formats you need, and the workflow you deserve.
