The Manley Stereo Variable MU Mastering Compressor is a classic all-tube Variable Mu compressor with precision controls designed specifically for mastering. Its HP-TBAR configuration provides smooth dynamics control while helping prevent low-frequency pumping.

The Manley Stereo Variable MU Mastering Compressor brings the smooth, musical character of the legendary Variable Mu into a precision-controlled design created specifically for mastering. Its all-tube, transformer-coupled signal path provides natural, cohesive gain reduction that can gently enhance a finished mix or provide more assertive dynamic control while preserving clarity, impact, and musicality.

Unlike the standard Variable Mu, the Mastering version features precision-stepped Input, Output, Threshold, and Attack controls for accurate settings and easy recall between sessions and revisions. The current HP-TBAR configuration combines a High-Pass Side Chain filter to reduce unwanted low-frequency-triggered compression with Manley’s T-Bar tube design for smooth, controlled gain reduction. Compress and Limit modes provide a useful range from subtle mastering compression to stronger peak control, while the unit’s high-headroom design makes it well suited for critical stereo mastering applications.

Manley Stereo Variable MU Mastering Compressor Features

• Designed specifically for mastering applications
• HP-TBAR configuration standard on current production
• Precision-stepped Input, Output, Threshold, and Attack controls
• T-Bar variable-gain tube design
• All-tube, transformer-coupled signal path
• Custom Manley IRON transformers
• Compress mode with 1.5:1 ratio
• Limit mode with ratios up to 20:1
• Selectable High-Pass Side Chain filter
• +30 dBu maximum output for high-headroom operation

Manley Stereo Variable MU Mastering Compressor Includes

• Manley Stereo Variable MU Mastering Compressor
• IEC Power Cable
• Manual
• Manufacturer Warranty