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Manley Massive Passive Stereo Tube EQ , $6,999.00 - Add to Cart Skip to Product Information

Manley Massive Passive Stereo Tube EQ

2-channel, 4-band Vacuum Tube Equalizer
Item ID: MassivePassive
Manley Massive Passive Stereo Tube EQ
$ 6,999 .00
In Stock!

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Manley Massive Passive Stereo Tube EQ
In Stock!

(Hurry, limited quantity available)

$ 6,999 .00

Twice the EQ — Half the Coloration!

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Manley's Massive Passive is an equalization monster. You can expect the best strengths of Pultec-style equalizers as well as choice console, parametric, and graphic EQs — all the radical shaping you'll need for the most demanding of sessions as well as the delicate, subtle shadings needed for vocals and mastering. The 2-channel, 4-band Massive Passive features a passive tone-shaping portion of the equalizer design and uses only the best components, for its ultimately huge, high-headroom performance. Offering incredible sculpting abilities, without all the coloration, the Massive Passive may well be your last equalizer.

Premium design with passive components

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

2-channel, 4-band EQ for everything from the radical to the subtle

The Massive Passive equalizer excels at everything from the drastic shaping needed for tracking to the most subtle of shadings needed for affecting vocal tracks or the whole mix. Although different in nature, its 2-channel, 4-band design offers a tremendous amount of sonic sculpting, incorporating the best strengths of Pultecs, choice console EQs, graphic equalizers, and parametric equalizers — but it doesn't throw color all over the audio. Get creative with it, or get logical and surgical with it — the Manley Massive Passive is ready to make the most of whatever you toss its way.

Five steep highpass filters and four steep lowpass filters

The Manley Massive Passive is packed with five highpass filters and four lowpass filters, and you can bypass either or both. The filters are steep, so you can pull out the junk without touching the real music. It's also great-sounding when combined with other bands. Ultimately, Manley went for "what's useful" when designing the Massive Passive, not "what's standard" — it's a welcome design departure that produces seriously massive results.

Manley Massive Passive Equalizer 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 : 20 dB boost, 20 dB 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 12AX7 EH, 4 x 6414 for serial MSMPX### after 2/2004
  • Tube Complement: 2 x 5751, 4 x 6414 for serial MSMP### until 2/2004
  • Power Consumption (120/240VAC): 72 watts
  • Mains Voltage Frequency: 50~ 60Hz
  • Size (3U): 19" x 5.25" x 10"
  • Weight: Unit 21 lbs.

Warranty Info

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Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.