MASSIVE PASSIVE is a two-channel four-band equalizer added high pass and low pass filters. By “passive” is meant here that the tone formation in the smart new EQ design does not use any kind of active circuit – it is a bit like a Pultec EQ on hyper-steroids.

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

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: 1/4” Jacks (not hardwire) Bypass Switch bypasses EQ, tube circuits & Input Buffer: XLR Jacks (Hardwire Bypass) Gain Trim: -6dB – 0dB – +4dB 44 Frequencies (roughly 1/4 octave spacing) Frequency Range: 22 Hz to 27 kHz EQ Boost/Cut Range : Maximum 20 dB boost or cut Nominal Q range: 1.5 to 3 (uniquely active in shelf modes) Maximum Input Level: +21dBu Maximum Output Level (1kHz sine, 1% THD+N, BW 22Hz-22kHz, Load 100kOhms): +35dBu Frequency Response (@ +4dBu, Load 100kOhms): -0.1 dB @ 10Hz, -1 dB @ 60 kHz Total Harmonic Distortion (THD+N) (1kHz sine @ +4dBu, BW 22Hz-22kHz): 0.006% Output Headroom (Reference to +4dBu): 31dB Dynamic Range (Reference to Maximum Output): 123 dB Noise Floor Typical (Unity Gain): -88 dBu (A-Weighted) Signal to Noise Ratio (Reference to +4 dBu, BW 22Hz-22kHz): 92dB Input Impedance: 20kOhm Output Impedance: 150 Ohm Tube Complement: 2 x 5751, 4 x 6922 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 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.