Unlock the warmth and character of your mixes with the Manley Mastering Stereo Variable Mu, an industry-standard signal processor. Known for its all-tube, transformer-coupled design, this compressor/limiter employs the unique 5670 dual triode tube for peak reduction, delivering the kind of sonic glue and punch that can bring your tracks to life. Unlike many compressors, the Variable Mu offers true variable gain, smoothly adjusting its amplification factor for maximum level control with minimal artifacts, reminiscent of the famed Fairchild 670.

The mastering version of the Variable Mu is enhanced with precision rotary switches, ensuring precise channel matching and recallability, making it indispensable in mastering studios. With a soft-knee 1.5:1 compression ratio and a limit mode that ranges from 4:1 to 20:1, it provides the flexibility needed for both subtle and aggressive dynamics control. The highpass sidechain filter is a thoughtful addition, perfect for handling bass-heavy material without unwanted pumping.

Whether you're working in stereo or dual-mono, the Variable Mu excels with its ganged input control and independent threshold, attack, and release options. Its ability to add a touch of color or character to tracks makes it a favorite for many engineers, offering a cohesive and balanced sound that feels just like pouring "sweet cream" over your mix.

Key Features:

• True variable gain with 5670 dual triode tube
• Precision rotary switches for precise control
• Compression ratio: 1.5:1; Limit ratio: 4:1 to 20:1
• Highpass sidechain filter for bass management
• Ganged input control with separate threshold and output controls
• Balanced inputs and outputs with Manley transformers
• Handcrafted in the USA with a robust 2U steel chassis
• Large illuminated Sifam meters for gain reduction display

Owner's manual

Product specs

FAQs

What is the primary use of the Manley Mastering Stereo Variable Mu?

The Manley Mastering Stereo Variable Mu is primarily used for mastering applications, providing smooth, musical compression that adds warmth and cohesion to mixes.

How does the Manley Mastering Stereo Variable Mu handle stereo linking?

The Manley Mastering Stereo Variable Mu features a LINK switch that connects the side-chain voltages for consistent control across both channels, while still allowing individual channel adjustments.

What is the compression ratio range of the Manley Mastering Stereo Variable Mu?

In compression mode, it starts with a soft-knee 1.5:1 ratio, while in limit mode, the ratio begins at 4:1, increasing up to 20:1 with more gain reduction.

Is the Manley Mastering Stereo Variable Mu suitable for adding warmth to a mix?

Yes, the Manley Mastering Stereo Variable Mu is renowned for its ability to add warmth and thickness, making it ideal for enhancing the overall tonal quality of a mix.

What type of gain reduction does the Manley Mastering Stereo Variable Mu use?

The Manley Mastering Stereo Variable Mu utilizes a variable mu design, which means it employs vacuum tubes for variable gain reduction, providing a smooth and natural compression effect.