Manley Labs Massive Passive Stereo Tube EQ

Manley Labs Massive Passive Stereo Tube EQ

Manley Labs Massive Passive Stereo Tube EQ

Special Order
Expected availability: 7-14 business days

Product Highlights

  • Passive Inductor-Based EQ
  • 4 Bands of Parametric EQ per Channel
  • Switchable Shelf EQ with Bandwidth Shape
  • Hand-Selected Vacuum Tubes
  • Hand-Wound Output Transformers
  • Parallel Symmetrical Topology
  • Auto Warm-Up Delay: 20 Seconds
  • Bright Blue LEDs for Active Functions
  • 3U Rackmount
Show moreShow less

This item is noncancelable and nonreturnable.

B&H $500 Gift Card Dash

Share for a chance to win a $500 B&H Gift Card!

Share on Twitter

Share a favorite product for chances to win one of eight $500 B&H Gift Cards!
1 new winner announced every Monday starting Nov 5th!
Limit 1 entry per day: Come back every day to increase your chance of winning.

Be sure to mention #BHWishList when you share!

Congrats to our winners so far:

Next winner: Dec 17th

James Z. (Wk 1)

Ralph H. (Wk 2)

Arturo M. (Wk 3)

Rich P. (Wk 4)

Valeria A. (Wk 5)

Sabrina B. (Wk 6)

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $500.00 Gift Card Dash (the "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about October 28, 2018 until on or about December 23, 2018 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share any product found on the B&H website (the "Website") on Facebook or Twitter via the dedicated links contained on the website using the hashtag #BHWishlist; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $500.00 Gift Card Dash Sweepstakes, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total eight (8) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $500.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize at the email address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the email account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An email account holder shall mean the natural person assigned to such email account by the internet access or online service provider or other organization responsible for assigning email addresses for the domain associated with such email account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $500.00 Gift Card Dash Sweepstakes Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $500.00 Gift Card Dash Sweepstakes, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0 VA Sales Tax Collected on This Item
Add to Wish List Item in Wish List

Save Up to $15.00

Build Bundle

Manley Labs MSMP overview

  • 1Description

The Massive Passive from Manley Labs offers two channels of 4-band parametric equalization with additional 5-band high pass and low pass filters. Its design draws from vintage EQs using passive, parallel topology to create a natural and organic tone. Simple circuits with premium-quality components, like metal film resistors, film capacitors, and hand-wound inductors are used for sculpting the sound.

Each of the 4 bands offer Pultec-style controls, each with fixed frequency selections, variable bandwidth, and either 20 dB of boost or cut. This design allows for twice the control resolution over conventional EQs and eliminates the problem of a center detent not guaranteeing a flat response. The parallel topology allows for massive tone shaping without over driving the outputs. For instance, if you were to boost 4 bands at 1 kHz by 20 dB, the output would still only be +20 dB, whereas a conventional "series" EQ would output upwards of +80 dB.

Additional features include individual band bypass and the ability to switch each band from bell curve to shelf. The two left-most bands offer low shelf capabilities, while the right two offer high shelf. The bandwidth knob changes the properties for each of the shelves as well. The unusual "Constant Bandwidth" controls offer unique tone shaping capabilities. In bell mode, they behave like most "Q" controls of a parametric EQ with a wider shape when set fully counterclockwise, and narrower when set fully clockwise.

The shelf modes offer a special function. When the knob is set fully counterclockwise, the curves are similar to most shelf EQs. As you increase the bandwidth clockwise, a gradual bell-shaped dip is introduced as the slope increases, which modifies the overall shelf shape. It's rare to find an analog EQ with adjustable high shelf curves.

The high and low pass filters are individual circuits selected by switch settings, and each has specific slopes catering to their respective frequency range. All the filters are entirely passive and "inserted" between the boost and cut sections. The two "EQ In" push buttons engage the EQ on their respective channels. When bypassed, the EQ section and tubes are bypassed, but audio signals are still passed through the line amplifier and balanced output transformer. The -6 to +4 dB gain trims are intended to help level match between the "Bypass" and "EQ In."

There are no dedicated meters on the Massive Passive, instead bright blue LEDs indicate "EQ In," while red and green LEDs indicate cut and boost engagement respectively. Hand-made in the USA, the unit is housed in a 3U steel chassis with a CNC-machined 1/4" faceplate that is also inlaid with laser-engraved inserts. The Massive Passive ships with an IEC power cable.

  • 44 selectable frequency bands
  • 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
  • Passive HP and LP filters with unique slopes
  • Gain trim for level match between "Bypass" and "EQ In" modes
  • Auto-mute warm-up delay offers 20 second buffer before passing signal
Center Section for Each Channel
  • EQ In: Bypass for EQ, filter and tube section. Line amp and output transformer are still active in bypass
  • Gain Trim (-6 to +4 dB): For level matching between "EQ In" and "Bypass" modes
  • Low Pass Filter (6-Way Switch): Selects off or 1 of 5 available filters
  • High Pass Filter (6-Way Switch): Selects off or 1 of 5 available filters
4-Band EQ Per Channel with Each Band Featuring
  • 2-Way Toggle Switch (Bell/Shelf): Switches EQ mode
  • 3-Way Toggle Switch (Boost/Out/Cut): Switches boost or cut mode. Out is the band bypass
  • Gain Knob (0 to 20 dB): Sets cut or boost depth
  • Bandwidth Knob: Adjusts the width of the bell curve or shelf shape
  • Frequency Switch (11-Position): Selects a fixed frequency
UPC: 890833000038
In the Box
Manley Labs Massive Passive Stereo Tube EQ
  • IEC Power Cable
  • Limited 90-Day Warranty, Extends to 5 Years with Registration
  • Table of Contents
    • 1Description

    Manley Labs MSMP specs

    Input & Output Inputs
    2 x XLR transformer balanced and floating
    2 x 1/4" TRS balanced and unbalanced
    2 x XLR transformer balanced and floating
    2 x 1/4" TRS balanced and unbalanced
    Level Range Level: +4 dBu nominal
    Internal Switch: -10 dBu
    Filter Type (Slope) Filters
    High Pass: Off, 22, 39, 68, 120, 220 Hz
    Low Pass: 6, 7.5, 9, 12, 18 kHz, OFF
    Filter Slope
    High Pass Filter Slope (All Frequencies): 18 dB/Octave
    Low Pass Filter Slope (6, 7.5, 9 kHz): 18 dB/Octave
    Low Pass Filter Slope (12 kHz): 24 dB/Octave
    Low Pass Filter Slope (18 kHz): 60 dB/Octave
    EQ Section Frequencies: 44 (roughly 1/4 octave spacing)
    Frequency Range: 22 Hz to 27 kHz
    EQ Boost/Cut Range: 20 dB
    Nominal Q Range: 1.5 to 3 (uniquely active in shelf modes)
    Equalizer Control Bands Parametric Frequencies
    LOW: 22, 33, 47, 68, 100, 150, 220, 330, 470, 680, 1000 Hz
    LM: 82, 120, 180, 270, 390, 560, 820, 1200, 1800, 2700, 3900 Hz
    HM: 220, 330, 470, 680, 1000, 1500, 2200, 3300, 4700, 6800, 10,000 Hz
    HI: 560, 820, 1200, 1800, 2700, 3900, 5600, 8200, 12,000, 16,000, 27,000 Hz
    Frequency Response Frequency Response: 8 Hz to 60 kHz ±2 dB
    Maximum Output Maximum Output: @ 1.5% THD +37 dBv; +26 dBv @ 20 Hz
    THD & Noise THD & Noise (1 kHz @ +4 dBu): 0.06%
    Noise Floor Noise Floor (referred to +4 dBu): -85 dB
    Dynamic Range 120 dB
    Bypass Bypass Switch: Bypasses EQ and tube circuits (not hardwire)
    Tube Type 2 x 12AX7 EH
    4 x 6414
    Power Supply 72 W @ 120 VAC, 60 Hz
    Rackmountable 3 U
    Dimensions (W x H x D) 19.0 x 5.3 x 10.0" / 48.3 x 13.3 x 25.4 cm
    Weight 21.0 lb / 9.5 kg
    Packaging Info
    Package Weight 27.55 lb
    Box Dimensions (LxWxH) 22.9 x 18.3 x 10.1"

    Manley Labs MSMP reviews

    Be the first to review this item

    Manley Labs MSMP Q&A

    Manley Labs MSMP accessories

    Manley Labs MSMP add-on savings

    The more you Add-On the more you save (when you buy the Manley Labs Massive Passive Stereo Tube EQ)
    See any errors on this page? Let us know.