Metric Halo Super Gate v4 — Free Download
Metric Halo Super Gate v4 is a versatile audio gate and ducking plugin with customizable attack/release curves, detector EQ, and a visual detector display for precise, artifact-free signal control.

Purpose
Super Gate v4 is designed to isolate target audio events while attenuating unwanted signals. Its core job is to let desired sounds pass unaffected, only reducing noise or bleed when the gate triggers. Unlike standard gates, it uses a state-machine approach with custom gain curves applied as sample-by-sample instructions, avoiding aliasing and interpolation artifacts.
The plugin is built for precise control, with a WYSIWYG detector display that shows exactly what triggers the gate. It supports both gating (closing on low signals) and ducking (reducing level when a key signal appears). The integrated detector EQ and SpectraFoo analyzer help tailor the detection to specific frequencies, ensuring reliable triggering even in complex mixes.
Key Capabilities
Super Gate v4 offers adjustable attack and release curves, allowing users to shape the gate envelope to match the sound source. A delay-compensated look-ahead mode anticipates triggers for faster response without affecting audio quality. Threshold and hysteresis controls set the trigger point and prevent chatter, while maximum attenuation determines how much the signal is reduced when closed.
The plugin includes flexible internal monitoring to audition the detector signal, and detailed detector and gain reduction history meters provide visual feedback. Many presets are included for quick starting points, and the MH Preset Manager enables cross-platform preset sharing. The user interface size is adjustable, with graphs that can be collapsed to save space.
Workflow
To use Super Gate, start by loading it on a track with unwanted noise or bleed. Use the detector display and analyzer to identify the frequency range of the target sound, then adjust the detector EQ to focus on that range. Set the threshold and hysteresis so the gate triggers only on desired events, and adjust hold time to prevent premature closing.
Customize the attack and release curves by drawing them while listening, using the visual reference to align with the sound’s natural envelope. In look-ahead mode, the gate reacts ahead of time, which is useful for percussive sources. For ducking, route a key signal to the sidechain input; the gate reduces the track level whenever the key signal exceeds the threshold. Monitor the GR meter to confirm proper behavior.
Practical Applications
Super Gate excels at cleaning up drum tracks, removing bleed from toms or snares while preserving the attack transient. It is also effective for reducing background hiss in vocals or guitar amplifiers, especially when the detector EQ focuses on the voice’s fundamental frequencies.
In podcasting or voiceover, it can eliminate room tone between sentences without dulling the speech. For electronic music, the ducking mode creates sidechain-style pumping effects, lowering a pad or bass line when a kick hits. The precise curve control allows for creative gating rhythms, using the envelope as an expressive tool rather than just a noise gate.
Key features
- State-machine based attack and release for distortion-free gating
- Adjustable attack and release curves with sample-by-sample gain instructions
- Delay-compensated look-ahead mode
- Support for gating and ducking
- Integrated detector EQ with SpectraFoo analyzer
- Flexible internal monitoring
- Threshold, hysteresis, hold time, and maximum attenuation controls
- Detailed detector and gain reduction history metering, with many presets
Best for
Super Gate is best for engineers and producers who need precise, artifact-free gating on drums, vocals, or guitars, as well as creative sidechain ducking in electronic music. Its visual detector and adjustable curves make it ideal for shaping gates to match transient-rich sources or reducing noise in spoken word.