Relab Development & Maselec Launch the MLA-4 Triband Compressor/Expander Plugin

Precision Dynamics Without Compromise - Now in Your DAW

Relab Development, a leader in high-fidelity audio modeling, is proud to introduce the Maselec MLA-4 Triband Compressor/Expander Plugin, the first and only officially endorsed software recreation of the legendary MLA-4 hardware unit.

Developed in collaboration with Leif Mases, the esteemed designer behind Maselec, this plug-in brings a mastering-grade dynamic processor to the digital domain—offering unparalleled control, transparency, and musicality for mixing and mastering engineers.

Rethinking Multiband Dynamics

Unlike conventional multiband processors, which often introduce phase distortion, transient smearing, and tonal imbalance, the MLA-4 was designed for surgical yet musical control. With its unique ability to apply compression and expansion simultaneously per band, along with adaptive sidechain linking and precision crossover filters, the MLA-4 allows engineers to shape dynamics without disrupting mix integrity.

Whether it’s tightening low-end weight, enhancing vocal articulation, or restoring lost transients, the MLA-4 delivers true multiband processing without the usual trade-offs.

"The MLA-4’s unique approach to compression and expansion is what makes it special. Unlike traditional multiband compressors, it doesn’t feel like the music is being divided into separate frequency zones - it remains a cohesive, natural- sounding mix.

And with this plug-in, not only have we faithfully captured the precision and flexibility of the original hardware, but we’ve also expanded its functionality, making it even more powerful in a modern digital workflow.”

— Leif Mases, Founder of Maselec

Key Features & BenefitsSimultaneous Compression & Expansion – Shape dynamics naturally per band, controlling energy without unwanted artifacts.
Unique Sidechain Linking – Link bands intelligently for fluid, musical dynamic interactions.
Mastering-Grade Crossovers – Transparent filtering minimizes phase distortion and spectral imbalance. Auto Spectral Balance – Prevents tonal shifts while managing dynamic movement.
Per-Band THD Control – Add harmonic warmth exactly where needed.
Advanced Monitoring Tools – Solo bands, cut left/right channels, so you can better hear mix behavior.

Unmatched Value - Analog Precision at a Fraction of the Cost

The original Maselec MLA-4 hardware costs nearly $10,000 - a price reflective of its industry-standard reputation among elite mastering engineers. Now this exacting level of dynamic control is available in a plug-in format, accessible to every engineer and producer.

Special Launch Offer

To celebrate the release, Relab is offering the MLA-4 at an exclusive launch price of only $149 (reg $199) for a limited time.

In addition, every purchase includes:Curated Factory Presets tailored for mastering, mixing, and stem processing. Access to the Relab Community for expert tips and support.
30-Day Money-Back Guarantee - so you can buy with confidence.

Experience the MLA-4 Today

The next generation of multiband compression is here. Discover how the Maselec MLA-4 can transform your mixes and masters with precise, musical dynamic shaping.

Learn more about the Maselec MLA-4 Triband Compressor/Expander Plugin here.









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