MASSIVE PASSIVE is a two-channel four-band equalizer added with 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 really only happen by using an EQ, which processes the signal with natural methods. Massive Passive uses simple passive components and utilizes their natural qualities rather than letting a complex circuit force the signal in a certain direction. Compared to other devices, Massive Passive allows you to use much more EQ with much less staining.

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
Typical Noise Floor (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
Complement Tube: 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.