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1642-VLZ PRO Specifications
Mic Preamp

Equivalent Input Noise (20Hz-20kHz)

 150 ohm

-129.5 dBu

   50 ohm

-131.0 dBu

 0 ohm

-134.5 dBu

Frequency Response


5Hz to 100kHz:


3Hz to 192kHz:

IM Distortion (4 to 1 ratio SMPTE)
 35dB gain


Harmonic Distortion (20Hz-20kHz)
 35dB gain


 Max +60dB
 Min 0dB or Unity
Max Input +22dB
Input Impedance 1.3k Ohm
Common Mode Rejection > 90dB
Common Mode Rejection Ratio > 140dB
Main Mix Noise
20Hz-20kHz bandwidth, 1/4" Main out, Channel Trim @ unity gain, channel EQs flat, all channels assigned to Main Mix, odd channels Pan left, even channels Pan right, Reference +4dBu
Main Mix Fader @ unity, channel faders down:


Main Mix Fader @ unity, channel faders @ unity:


Total Harmonic Distortion (THD)
1kHz @ +14dBu, 20Hz-20kHz.


Attenuation (Crosstalk)
1kHz relative to 0dBu, 20Hz-20kHz bandwidth, Line in, 1/4" Main Out, Trim @ unity
Channel Mute switch engaged:


Channel Fader down:


Frequency Response
Any input to any output 

20Hz to 60kHz


20Hz to 100kHz

Maximum Levels
Mic in:


All other inputs:


Main Mix XLR out:


All other outputs:


Mic in:
1.3 kilohms
Channel Insert return:

2.5 kilohms

All other inputs:

10 kilohms or greater

Tape out:

1.1 kilohms

All other outputs:

120 ohms

3 Band EQ (Channels 1-8)
High Shelving

±15db @12kHz

Mid Peaking

±15dB, Sweep
100Hz -8kHz

Low Shelving

±15db @ 80Hz

Low Cut Filter:
-3dB @ 75Hz
3 Band EQ (Channels 9-16)
High Shelving

±15db @12kHz

Hi Mid Peaking:

±15dB @ 3kHz

Lo Mid Peaking:

±15dB @ 800kHz

Low Shelving:
±15db @ 80Hz
Low Cut Filter:
-3dB @ 75Hz
Power Consumption:

120VAC, 50/60Hz, 50 watts

Fuse Ratings:
1A Slo Blo, 5 x 20mm


0.5A Slo Blo, 5 x 20mm

18.2 lbs (8.3 kg)

Rack Mounting:

Optional rack ears are available which will allow the 1642-VLZ PRO to be mounted in a standard 19" rack. Allow ten rack spaces for the unit, and allow two empty rack spaces on top (for room to plug anything in).

Since we're always striving to make our stuff better by incorporating new and improved materials, components and manufacturing methods, we reserve the right to change these specifications at any time without notice.

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