🎛️ AI Plugins Reviewed: Pros & Cons
As AI continues reshaping the music workflow, these five plugins are getting serious traction from engineers and producers alike. Here’s a candid breakdown of what works, what doesn’t, and who it’s (really) for.
1. iZotope Neutron 5 (Mix Assistant)
Pros
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The AI-powered Mix Assistant analyzes your multitrack session to auto-balance levels, EQ, compression, stereo placement, and more.
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Includes powerful modules like Unmasking EQ, Density (upward compression), Phase alignment, and Clipper for advanced fine-tuning.
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Great for both beginners and seasoned engineers thanks to intuitive workflow and deep adjustability.
Cons
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Some users report the Assistant tends to overcook saturation or high-end by default—feedback can be harsh unless dialed down manually.
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CPU usage can be heavy when instantiated across multiple channels.
Best For: Fast rough-in sessions, mix templates, and educational learning tools.
2. LANDR AI Mastering Plugin 
Pros
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Accessible web- and plugin-based mastering tool that analyzes genre and delivers release-ready masters quickly.
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Trusted by thousands of independent artists; platform handles normalization, EQ, processing, and loudness standardization.
Cons
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Limited options for custom tweaking or creative tone tailoring.
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Reliability depends on source material quality—complex mixes can expose AI limitations.
Best For: DIY artists needing instant mastering without technical overhead.
3. RoEx Automix AI
Pros
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Affordable mixing + mastering workflow via web-based stem uploads.
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Ideal for beatmakers or solo artists who want polished sound without investing in full DAWs.
Cons
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Minimal control over sonic character—more “one-button” than an engineering tool.
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Best used as a starting point; often requires manual polish afterward.
Best For: Quick demos or early-stage tracks where polish isn’t priority zero.
4. Sonible smart:EQ 4
Pros
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Uses spectral AI to sculpt EQ curves based on genre, balance, and reference tracks, reducing masking between instruments.
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Learns from your mix context and adapts EQ dynamically.
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Excellent for cleaning up busy arrangements or clarifying tonal balance without guesswork.
Cons
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Doesn’t address compression or spatial mix elements—EQ only.
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May lack nuance for more creative or colored tonal shaping.
Best For: Engineers dealing with dense mixes or mask-heavy sessions.
5. Neural DSP Mantra (Vocal AI Channel) 
Pros
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All-in-one vocal tool offering pitch correction, harmonization, sculpting EQ, saturation, compression, and FX.
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Features “Sculpt” module: AI-driven EQ/dynamics shaping based on genre presets.
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Over 200 style presets and real-time vocal feedback make vocal polishing intuitive.
Cons
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Module order is fixed—limits flexibility in vocal chains.
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Some vocal corrections are only available in mono, which may confuse stereo workflows.
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Designed more for performance than full mix automation contexts.
Best For: Solo engineers and producers needing powerful vocal processing in one interface.
đź§ Summary Comparison
Plugin | Function | Strengths | Limitations |
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Neutron 5 | Mixing Assistant | Full-channel processing, versatile | Resource-heavy, can overcook |
smart:EQ 4 | AI-EQ | Precision clarity & unmasking | EQ only |
RoEx Automix | Auto mix/master tool | Fastest path from stems to polished | Minimal creative control |
LANDR Mastering | AI Mastering | Quick mastering for distribution | Less custom character |
Neural DSP Mantra | Vocal channel strip | Comprehensive vocal chain + FX | Some inflexibility in workflow |
🎧 Final Verdict
AI tools in 2025 aren’t about replacing engineers—they’re about automating the routine, so pros can focus on tone, emotion, and nuance. Use Neutron or smart:EQ to fast-track mixing stages. Reach for Mantra when vocals are the focal point. Need instant mastering? LANDR has you covered. For barebones demos, RoEx is a viable shortcut—just don’t expect it to replace your signature sound.
In the end, the best engineers use AI as a partner—not autopilot.