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Manley Massive Passive Mastering Version , 8399 dollars and 0 cents - Add to Cart Skip to Product Information

Manley Massive Passive Mastering Version

Stereo Tube 4-band Mastering Equalizer
Item ID: MPMaster
Manley Massive Passive Mastering Version
8399 dollars and 0 cents
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Manley. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated November 13, 2026

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Manley Massive Passive Mastering Version
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Manley. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated November 13, 2026

8399 dollars and 0 cents

A Mastering Version of the Acclaimed Massive Passive!

This article was Written By

Our Product Research Team

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The Manley Massive Passive Mastering Version equalizer features a simple, passive design - not a standard parametric design - for more natural, organic shaping. It also offers mechanically detented knobs for both Gain and Bandwidth controls, so you can easily repeat your settings. On the Massive Passive Mastering Version, both the Gain and Bandwidth controls intentionally interact, and the bands interact, as well — this creates an incredible-sounding result without sounding "colored" or "processed." Also, both higher and lower than the normal version, the Manley Massive Passive Mastering Version's filters are tailored to mastering purposes.

Premium design with passive components

As you can expect from Manley, no corners were cut with the design of the Massive Passive Mastering Version, and there's no unnecessarily complicated circuit — Massive Passive Mastering Version features basic passive components and uses only metal film resistors, film capacitors, and hand-wound inductors to sculpt the sound.

Mechanically detented knobs

Your settings are completely loggable on the Manley Massive Passive Mastering Version. Manley found a way to mechanically detent the Gain and Bandwidth controls, ensuring repeatability — without adding the extra cost and space problems that Grayhill switches would have caused.

Gain and Bandwidth controls interact, as do the bands

On the Manley Massive Passive Mastering Version, both Gain and Bandwidth controls intentionally interact, as do the parallel-design bands. You can boost a band 20dB while boosting another band at that frequency for minimal change — on most equalizers, the two bands add — so you boost 40dB into clipping. Due to this interaction, predictable step sizes are unrealistic - but the settings are repeatable when logged — and the interact bands contribute to the Massive Passive Mastering Version's excellent sound.

Specially tweaked for mastering

Here at Sweetwater, we've found the Manley Massive Passive Mastering Version is perfectly tailored to mastering needs. Its filters are both higher and lower than the regular Massive Passive. In addition, the Master Gain Trim Controls are true 11-position, 1/2dB, stepped Grayhill switches ranging between -2.5 to +2.5dB of trim, making left/right matching and calibration easier.

Manley Massive Passive Mastering Version Features:

  • All-Passive tone sculpting circuitry
  • Unique Shelf curves use the "bandwidth" control
  • Overlapping and Interleaved Frequency choices
  • Every band switchable to shelf or bell
  • Vacuum tube make-up gain and line drivers
  • Parallel symmetrical topology
  • Premium components throughout
  • HP and LP Filters plus gain trims
  • Ins & Outs Balanced XLR & 1/4" (accepts unbalanced)
  • Level +4 dBu nominal, internal switches for -10 operation
  • Bypass Switch bypasses EQ & tube circuits (not hardwire)
  • 44 Frequencies (roughly 1/4 octave spacing)
  • Frequency Range: 22 Hz to 27 Khz
  • EQ Boost/Cut Range : Maximum 11dB boost or cut
  • Nominal Q range: 1.5 to 3 (uniquely active in shelf modes)
  • Frequency Response: +/- 2 dB: 8 Hz to 60 KHz
  • Maximum Output @ 1.5% THD +37 dBv; +26dBv @ 20 Hz
  • THD & Noise (1KHz @ +4 dBu): 0.06%
  • Noise Floor (referred to +4dBu): -85 dB (A Weight)
  • Dynamic Range: 120 dB
  • Tube Complement: 2 x 12AU7, 4 x 6414
  • Power Consumption (120/240VAC): 72 watts
  • Mains Voltage Frequency: 50~ 60Hz
  • Size (3U): 19 inches x 5.25 inches x 10 inches
  • Weight: Unit 21 lbs.

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