MASSIVE PASSIVE is a two-channel, four-band equalizer with added high pass and low pass filters. By “passive” we mean that the tone generation in the clever new EQ design does not use any kind of active circuitry – it’s a bit like a Pultec EQ on hyper-steroids.

The mastering edition

Here the filters have been changed and placed a little deeper and higher, so they are better suited to a mastering situation. The master gain knobs are in fixed steps with 11 positions with ½ db change per step.

Natural methods

Creating a natural, organic sound can only really be done by using an EQ that processes the signal with natural methods. Massive Passive uses simple passive components and exploits their natural qualities rather than letting a complex circuit force the signal in a particular direction. Compared to other units, the Massive Passive allows you to use much more EQ with much less coloration.

Specifications for the mastering edition

• Inputs: Balanced XLR & 1/4” (accepts unbalanced)

• Outputs: Balanced XLR (accepts unbalanced) & Unbalanced 1/4”

• Level +4 dBu nominal

• 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

• Auto-mute warmup delay = 20 seconds

• Power Consumption (120/240VAC): 44 watts

• Mains Voltage & Frequency (VAC/Hz): Internal Universal Power Supply 90-254 VAC / 50-60Hz

• Mains Voltage Frequency: 50~ 60Hz

• Size (3U): L 19” x W 10” x H 5.25”

• Unit Weight: 15.5 Lbs.

• Shipping Box: L 23” x W 15” x H 10”

• Shipping Weight: 26 Lbs.