Manley Laboratories Massive Passive EQ

The EQ that defines modern Mastering

• Modern passive tube EQ with hand-wound inductors
• Natural, musical tone shaping across 4 overlapping bands
• The best Mid bands in the business!
• Hand-built in California with premium passive components

Manley Massive Passive, our flagship EQ

Since its introduction, the Manley Massive Passive has redefined passive tube equalization: organic, musical, and unmistakably powerful. Hand-built in California, it combines metal-film resistors, film capacitors, and hand-wound inductors with all-tube makeup gain stages, to deliver unparalleled tonal sculpting for tracking and mastering. In combination with a Manley Backbone Mastering Matrix this EQ becomes an audio engineer's dream in M/S mode!

Radical boosts without artifacts, natural cuts without phase smear

From vocals and instruments to full stereo mixes, the Massive Passive delivers huge high-frequency boosts without sibilance and unbelievable low-end fatness without mud. Its passive topology and vacuum tube amplification ensure every adjustment feels intuitive and sounds transparent

Surgical precision meets vintage warmth

Every band on the Massive Passive offers switchable shelf or bell curves with overlapping, interleaved frequencies across a 22 Hz to 27 kHz range. Balanced XLR I/O, passive high-pass and low-pass filters, and meticulous hand assembly make it essential for any world-class studio

Specifications