Manley Massive Passive Stereo EQ

Professional Stereo Four-Band EQ with additional high pass and low pass filters

The Massive Passive is Manley's beefy EQ.  The stereo four-band Equalizer with additional high and low pass filters creates a sound like nothing else and will add that richness that you've always desired but never been able to create! The all passive, metal only film resistorsm capacitors and hand-wound inductors produce a sound that has to be heard to be believed. 

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Manley's Massive Passive is an equalisation behemoth. The extreme shaping needed for the rigorous sessions as well as the gentle, nuanced shadings needed for vocals and mastering are all well within its wheelhouse. This EQ harnesses the best assets of Pultec-style equalisers as well as choice console, parametric, and graphic EQs. Only utilising preeminent components for its ultimately colossal, high-headroom performance, the 2-channel 4-band Massive Passive delivers exceptional sculpting abilities, without the colouration. The Massive Passive is intended to provide all the EQ you’ll ever need, and succeeds.

Although different in nature, the Massive Passive’s 2-channel 4-band design offers a marvellous amount of sonic shaping. Amalgamating the strengths of Pultecs, choice console EQs, graphic equalisers and parametrics, it doesn't cast colour across the track. The Manley Massive Passive is ready to capitalise on and magnify whatever you throw at it, whether that means getting creative, or logical and surgical.

No shortcuts were taken with the design of the Massive Passive, as we’ve come to expect from Manley. There's no unnecessarily complicated circuit. Massive only deploys metal film resistors, film capacitors and hand-wound inductors to form the sound and only uses basic passive components. Thanks to its more natural design, you can expect a natural tone.

Packed with five highpass filters and four lowpass filters, you can bypass either or both. The Manley Massive Passive’s filters are steep, so you can pull out the excess without touching the real music. It's also great-sounding when combined with other 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 plus gain trims
More Information
  • 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
  • Unit is factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
  • Operating Mains Voltage changeable with power transformer changeover switch and fuse value change.
  • Mains Voltage Frequency: 50~ 60Hz
  • Size (3U): 19" x 5.25" x 10"
  • Weight: Unit 21 lbs. Shipping Weight: 27 lbs.