Vorsis Four Channel Digital Mic/Voice Processor

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Vorsis Four Channel Digital Mic/Voice Processor


Four channels of stellar audio processing in a full-function WheatNet-IP BLADE-3

This single rack unit BLADE-3 gives you four mic processors that are accessible from anywhere in your WheatNet-IP network, or acts as a standalone processor. The M4IP-USB offers four completely independent channels of DSP-based high quality voice processing as well as four independent USB ports.

The M4IP-USB Microphone Processor BLADE combines four high-quality microphone preamps, four channels of Vorsis Embedded microphone processing, four independent USB ports, and a WheatNet-IP BLADE interface, allowing you to place four microphone inputs anywhere in your WheatNet-IP Intelligent Network (although it also works just fine as a standalone processor). The preamps and processors are accessed and controlled from any point on the network via its Windows-based GUI.

The M4IP-USB is a great way to maximize your investment in on-air talent by combining four mic processors into a single rack space, accessible from anywhere. The M4IP-USB microphone processor is equipped with four matched Super-Quiet (SQ) microphone preamplifiers featuring an extremely low noise floor, very wide dynamic range, faithfully accurate transient response, and ruler flat frequency response. Operating in harmony with high quality 24-bit A/D converters and a 96kHz base sample rate, the M4IP-USB adds absolutely no undesired coloration to the signal and faithfully preserves the sound of any microphone and talent combination. It also features a four-section equalizer with high and low shelving EQ and two bands of fully parametric EQ, high and low pass filters, and de-esser and expander functions.

The signal path of the M4IP-USB includes four completely independent channels of Wheatstone’s smooth-sounding Vorsis dynamics processing. Adjustable from anywhere on your network, the M4IP-USB offers the security of password protected TCP/IP-based remote control and no front panel controls.

Wheatstone-designed Dynamics Processing tools

A high performance and fully adjustable downward expander, de-esser, and smooth sounding broadband compressor and selectable low distortion final look-ahead limiter round out the M4IP-USB to create powerful and authoritative presence to production or on-air microphones.

Processing Presets

A variety of ready-to-use factory processing presets are provided, carefully tailored for different processing goals and formats. You can select a factory preset, confident that it will sound great just as it is. Or use a factory preset as a starting point and create a custom sound for each announcer, then save the new settings as a personalized user preset. In a facility with multiple microphone processors, presets saved in one unit can be easily copied to the others.

Wheatstone-designed Equalization

Based on great-sounding designs built for Wheatstone’s other high performance professional audio applications, the M4IP-USB’s equalization section operates predictably and adds no noise, ringing, phasiness or other undesirable coloration to the sound.

WheatNet-IP Native

The M4IP-USB is a WheatNet-IP BLADE which gives it a great deal of additional functionality. All Wheatstone’s BLADEs are single rack-space interfaces that talk directly to WheatNet-IP control surfaces, other BLADEs and compatible third-party equipment. They contain features such as router control, logic control, gain control, two 8-channel utility mixers, silence detection and switching



  • Four extremely high performance microphone preamplifiers with 48V phantom power
  • Four completely independent processing channels
  • Four independent USB ports
  • Four stereo analog line level outputs
  • Four stereo AES outputs
  • All digital, field proven Wheatstone-designed advanced processing algorithms
  • Phase Scrambler to correct asymmetrical voice waveforms
  • High- and low-pass filters
  • Fully adjustable downward expander
  • Precision de-esser sibilance controller
  • Four-bands of EQ: low-frequency shelving, two-band parametric, high-frequency shelving
  • Broadband compressor
  • Final precision peak limiter – can be defeated if desired for lower latency
  • TCP/IP-based remote control from anywhere via M4IP-USB Remote Control Software
  • Talent Control Interface software for preset recall without processor control
  • Front panel metering of input and output levels
  • WheatNet-IP BLADE-3 features include:

    — 12 Universal Logic ports (GPIO) 

    — Front panel headphone jack

    — Front panel LED bargraph metering

    — Built-in routing control

    — Two built-in 8-channel utility mixers

    — Gigabit Ethernet

    — Silence sensing can be applied to any output

    — Built-in Audio Clip Player

    — Front Panel Logic Indicators

    — LIO/SLIO Logging

    — Aliases

    — Associated Connections

    — Dual OLED Displays

    — Clock/Sync Indicators and more



Factory presets are pre-installed and write protected.
New factory presets can be down­loaded from the 
Wheatstone-Processing.com web site and installed 
via the Windows-based GUI software.
Storage for 80 presets in on-board non-volatile memory, unlimited storage on host PC.
Microphone XLR-F connectors four
Electronic differential >2KΩ (bridg­ing)
Optimum source impedance 200Ω
Phantom Power 48VDC, switchable on/off
Gain -10dB to +70dB in 1dB steps
Frequency response ±0.2dB 20Hz-20KHz
Equivalent input noise (EIN) -128dBu
THD+N <0.03%, 20Hz-20kHz, -50dBu input
SMPTE DIM0.0000007
Line-level output Two RJ45 to StudioHub standard
Reference Level 0VU=-20dBFS
Output Sample Rates 44.1kHz or 48kHz
Balanced 110Ω AES-3 0VU=-20dBfs
Electronically balanced <10Ω source impedance
Optimum load impedance >600Ω
Maximum output level +24dBu
Asymmetry filter Phase rotator, 4th order allpass, 
switchable in/out
High-pass 24dB/octave Butterworth
Adjustable 20Hz-1kHz
Low-pass 24dB/octave Butterworth
Adjustable 1-20kHz
Threshold Adjustable -60dBFS to 0dBFS
Depth Adjustable 0-40dB
Close Adjustable 50ms-3s
Control Recursive-style
Threshold Adjustable -10dBFS to -60dBFS
Release time Adjustable 50ms-500ms
De-ess frequency Adjustable 20Hz-20kHz
Routable Pre or post compressor
Band 1 Shelving 
Adjustable 20-200Hz 
Boost/cut ±14dB
Bands 2 and 3 Parametric 
Adjustable 20Hz-20kHz 
Boost/cut ±14dB 
Bandwidth 0.2-3.0 octave
Band 4 Shelving 
Adjustable 2kH-20kHz 
Boost/cut ±14dB
Control Broadband
Threshold -10dBFS to -50dBFS
Attack time 0.2ms-1s
Release time 33ms-1s
Control Zero-overshoot look-ahead limiter
Threshold fixed at -6dBFS
Attack automatic
Release automatic

1000BaseT Gigabit Ethernet
Four independent USB ports
19”/48.3cm wide 

1.75”/4.5cm high 

13.25”/33.7cm deep 
(15.25”/38.7cm deep w/rear connectors)
Weight 10.35lbs/4.69kg
Shipping weight 14lbs/6.4kg
Power 90-120VAC, 50-60Hz, 22VA