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Waves Curves L4 Ultramaximizer
Waves Curves L4 Ultramaximizer
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The limiter for a new era of loud
In the ’90s and 2000s, L1 and L2 were loudness. From Red Hot Chili Peppers to Metallica to Timbaland, countless iconic records ran through them – that was how you stood out. But loudness was yesterday’s battle.
Today, music needs more. And L4 delivers.
An adaptive limiter designed for modern music, L4 delivers not just (super) competitive levels for streaming, but also musicality:
More low end. More transient punch. More life.
Today’s sound is deeper. Bigger. More dynamic. Artists grab attention with more than just volume – with nuance, impact and feel. Limiters need to enhance music, not just squash it. L4 adds 5 unique limiting algorithms, adaptive Clipping & Release controls, Upward compression, True Peak, and much more.
- New! 5 unique limiting algorithms: Modern, Aggressive, Smooth, Safe, L2
- New! Adaptive clipping & release controls
- New! Upward compression
- Ultra-low latency
- New! True Peak limiting
- New! LUFS metering
- New! Gain-match button
- New! Oversampling
- New! 2 GUI views: graph & classic mode
- New! Stereo link
Adaptive Clipper & Release
We wanted to keep things simple. The Clipping and Release settings are content-dependent – the plugin sets them based on your track.
You then control the relative level of each, as you hear how they’re affecting the transient impact and feel.

Upward Compression
Inspired by the classic MV2 plugin, this module is incredible for bringing forward quieter passages and adding density.
Used together with appropriate limiter settings, you’ll get more loudness AND more dynamic impact.

LUFS Metering
Prepare your track for streaming.
With short-term and long-term LUFS metering, you’ll have accurate levels while working, allowing you to optimize your songs for different streaming services.

Two GUI Views
For those who like to see exactly what’s being limited, you have the ‘Graphical’ view of L4.
For those who like to work old school and mix with your ears, you have the classic view of L4, inspired by the L2 design.

L4 Ultramaximizer (V16) - System Requirements
Mac
- CPU
Intel or Silicon Architecture
See notes regarding Apple Silicon based processors - Memory
16 GB RAM
30 GB free disk space on the system drive - Operating System
macOS Ventura 13, Sonoma 14, Sequoia 15, Tahoe 26 - Screen Resolution
Recommended: 1920x1080
USB displays are not supported as the primary display.
Windows
- CPU
X64 compatible Intel or AMD CPU - Memory
16 GB RAM
30 GB free disk space on the system drive - Operating System
Windows 10 64 bit
Windows 11 - Screen Resolution
Recommended: 1920x1080
