Manley Variable MU Stereo Audio Compressor Limiter

Manley Variable MU Stereo Audio Compressor Limiter

Buy The MANLEY VARIABLE MU(R) LIMITER COMPRESSOR

Elevate Your Sound with the Variable MU Limiter Compressor

Discover the pinnacle of tube-based dynamics processing. The Manley Stereo Variable MU Compressor/Limiter harnesses the legendary warmth and smoothness of vacuum tubes to deliver unparalleled control over your stereo mixes, bus processing, and mastering chains. This isn't just a compressor; it's a signature piece of analog tone.

The Heart of Smooth Dynamics: Variable-MU Tube Technology

At its core, the Variable MU uses a 5670 dual triode tube for gain reduction. Unlike other designs, our proprietary circuit constantly re-biases the tube in real-time using a vacuum tube-rectified sidechain. This results in exceptionally smooth, musical compression without harsh artifacts, making it a favorite for adding glue, weight, and character.

Versatile Control:

• From Subtle Glue to Aggressive Limiting
• Choose the perfect dynamic response for any material:
• Compress Mode: Features a gentle soft-knee 1.5:1 ratio, ideal for transparently gluing stereo mixes, vocals, or acoustic instruments.
• Limit Mode: Engages a sharper knee with ratios from 4:1 to 20:1 (softening at higher settings) for assertive peak control and mastering-level limiting.

Intelligent Features for Flawless Performance

Sidechain High-Pass Filter: A 6 dB/octave filter (1-pole) reduces the compressor's sensitivity to low frequencies. This prevents audible "pumping" on bass-heavy material, ensuring a tight, clean result.

Independent or Linked Stereo Operation: Inputs are ganged, but each channel has its own threshold and output control. Engage the Stereo Link switch for perfect, phase-coherent stereo imaging-making it a masterful tool for 2-track mixes and mastering.

Creative Sound Shaping: Push the input and lower the output with minimal compression to saturate the transformers and tubes for rich harmonic distortion and vintage character.

Built in the USA to Last a Lifetime

Crafted with pride in our California workshop, the Variable MU is built for a lifetime of studio service.

Premium Components: Features custom Manley input and output transformers with nickel laminations in mu-metal cases for superior sound.

Robust Construction: Housed in a durable 2U steel chassis with a CNC-machined 1/4" faceplate and laser-engraved panels.

Clear Monitoring: Large, illuminated Sifam VU meters clearly display gain reduction in dB.

Technical Specifications & Features:

• Circuit Type: Variable-MU (Remote-Cutoff Tube) Compression
• Tubes: (1) 5670 Dual Triode, (1) 6AK5 (EF95), (2) 6AL5 (EA3), (1) 12AT7
• Transformers: Proprietary Manley input & output with nickel laminations in mu-metal cases
• I/O: Balanced XLR inputs & outputs (600 ohm)
• Power Supply: Independently regulated B+ and heater supplies
• Bypass: Hardwire true bypass switch
• Input Attenuator: -8 to +8 dB in 1 dB steps (Greyhill switch)
• Attack Time: Variable, 25 to 70 ms
• Threshold: Continuously variable control
• Recovery Time: 5-position switch (.2, .4, .6, 4, 8 seconds)
• Compression Ratio: 1.5:1 (soft knee)
• Limiting Ratio: 4:1 to 20:1 (sharp to soft knee)
• Sidechain HPF: 1-pole, 6 dB/octave (~1-3 dB attenuation at 100 Hz)
• Stereo Link: Engages true stereo coupling
• Metering: Large illuminated Sifam meters for gain reduction
• Power: Includes IEC power cable
• Made in: USA

Experience the Manley Legacy. The Stereo Variable MU is more than studio gear-it's an investment in timeless, musical sound.