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VLZ4 4•Bus

24-/32-Channel 4•Bus 

FX Mixer with USB

VLZ4 4•Bus SPECIFICATIONS

Main Mix Noise

(20 Hz–20 kHz bandwidth, 1/4" main out, channel gains @ unity, 
channel EQs flat, all channels assigned to main mix, odd channels 
panned left, even channels panned right.)
Main mix fader unity, channel faders down: 

  

–87.0 dBu (–91.0 dB Signal to Noise Ratio, ref +4 dBu) [2404VLZ4] 
–84.5 dBu (–88.5 dB Signal to Noise Ratio, ref +4 dBu) [3204VLZ4]

Main mix fader @ unity, channel faders @ unity: 

  

–81.5 dBu [2404VLZ4] 

 

–80.0 dBu [3204VLZ4]

 
 
Total Harmonic Distortion (THD)

(1 kHz @ 15 dB gain, 20 Hz–20 kHz bandwidth) 
Mic in to insert send 

<0.001% 

Mic in to main out 

<0.005%

 
 
Attenuation / Crosstalk

(1 kHz relative to +10 dBu, 20 Hz–20 kHz bandwidth, mic in,  
1/4" main out, gain @ unity)
Channel mute switch engaged 

–90 dBu

Channel fader down 

–88 dBu

 
 
Frequency Response

Mic input to main output (gain @ unity) 
          +0, –1 dB, 20 Hz to 50 kHz 
          +0, –3 dB, <10 Hz to >100 kHz 

 
 
Equivalent Input Noise (EIN)

(Mic input to insert send out, max gain)
150   termination 

–128.5 dBu 

 

20 Hz–20 kHz

 
 
Common Mode Rejection Ratio (CMRR)

1 kHz 

better than –70 dB

FEATURES:

  4•Bus mixer featuring our signature  

  high-headroom, low-noise design

  Boutique-quality Onyx mic preamps 

  • Ultra-wide 60 dB gain range 

  • 128.5 dB dynamic range 

  • +22 dBu line input handling 

  • Extended frequency response 

  • Distortion under 0.0007% [20 Hz – 50 kHz]

  Improved RF rejection, perfect for broadcast  

  applications

  Phantom power for condenser mics

  Dedicated inline channel compression for critical  

 

  inputs

  High-headroom line inputs with dedicated inserts

  3-band EQ with sweepable midrange

  18 dB/oct 100 Hz low-cut filter on mic input channels

  Level, pan, solo and overload/mute LEDs on  

  each channel

  Four subgroups featuring dedicated inline  

  compressors for total dynamic control

  Six aux sends with inserts, pre/post fader  

  and internal/external FX send options

  Two stereo returns and four group outs with inserts

  Dual 32-bit RMFX+

 processors featuring  

  24 “Gig Ready” reverbs, choruses and tap delay  

  for live applications

  Integrated 4x2 24-bit USB interface 

  • Stream subgroups or master L/R to your PC or Mac    

     for recording 

  • Use your favorite plug-in live via auxes 5/6 

  • Convenient stereo return to mains for music  

     playback or return to channel to implement EQ,  

     auxes and more

  PFL/AFL solo modes

  60 mm long-wearing log-taper faders

  High-resolution 12-segment stereo meters

  Sealed rotary controls resist dust and grime

  “Built-Like-A-Tank” rugged steel chassis with  

  powder-coat finish

  High-visibility, high-contrast controls deliver  

  convenient “at-a-glance” visual feedback

  Universal power supply for worldwide use

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