The Shure IntelliMix P300 Audio Conferencing Processor (P300-IMX) is a professional digital signal processor designed to improve speech clarity and simplify audio integration in conference rooms, boardrooms, classrooms, and hybrid meeting spaces. Featuring eight channels of IntelliMix microphone processing, acoustic echo cancellation, automatic mixing, and flexible audio routing, the P300 provides the tools needed for dependable professional conferencing.
Designed to work with Shure Microflex Advance microphones and other compatible Dante-enabled audio devices, the P300 combines digital audio networking with USB, analog, and mobile connectivity. It allows installers to connect ceiling array microphones, conference room computers, video codecs, and sound reinforcement equipment through a centralized audio processing system.
Its compact design, PoE+ power requirements, and Shure Designer software compatibility make the P300 a practical choice for commercial AV installations where clear communication and streamlined system configuration are essential.
Eight Channels of IntelliMix DSP Processing
The P300 includes eight channels of microphone processing optimized for professional audio and video conferencing.
Each processing channel provides acoustic echo cancellation, noise reduction, and automatic gain control to help maintain clear, consistent speech.
Acoustic Echo Cancellation (AEC) reduces the echo that can occur when audio from remote meeting participants is reproduced through local loudspeakers and picked up by room microphones.
Noise reduction helps minimize steady background sounds, while automatic gain control adjusts signal levels to accommodate different speakers and microphone distances.
Together, these features improve the listening experience for both local and remote meeting participants.
IntelliMix Automatic Mixing and Matrix Routing
The P300 incorporates Shure IntelliMix automatic mixing to manage multiple microphone signals efficiently.
Automatic mixing helps prioritize active speakers while reducing unnecessary microphone pickup from unused channels.
The integrated matrix mixer provides flexible routing between Dante network audio, analog connections, USB audio, and mobile devices.
Installers can configure audio paths for video conferencing, local sound reinforcement, recording, and additional audio destinations.
Built-in parametric equalization, compression, and delay provide further control over audio performance and system integration.
The P300's predefined architecture and configuration presets help reduce the amount of custom DSP programming required during installation.
Dante and AES67 Network Audio Integration
The P300 supports Dante digital audio networking with 10 Dante input channels and eight Dante output channels.
This allows the processor to exchange audio with compatible Shure Microflex Advance microphones and other networked audio equipment.
AES67 support provides additional interoperability with compatible network audio systems.
The processor uses a single RJ-45 Ethernet connection for Dante audio, device control, and PoE+ power.
This network-based architecture is especially useful in conference rooms where multiple microphones and audio devices must operate together.
USB Audio for Computer-Based Conferencing
The P300 includes a USB 2.0 Type-B connection for bidirectional audio communication with compatible computers.
This allows the processor to serve as an audio interface between a professional conferencing system and a room PC or laptop running video conferencing software.
Unlike the Shure MXA920 ceiling array microphone, which does not have a built-in USB audio interface, the P300 provides USB connectivity for compatible computer-based conferencing applications.
This makes the P300 particularly useful in meeting rooms that combine professional networked microphones with software-based video conferencing.
Analog and Mobile Audio Connections
The P300 provides two balanced analog audio inputs and two impedance-balanced analog outputs using three-pin block connectors.
These connections allow integration with compatible video codecs, amplifiers, loudspeakers, and other professional audio equipment.
A separate 3.5 mm TRRS mobile connection supports bidirectional audio with compatible mobile devices.
This connection can be used to include an additional telephone participant in a meeting or to route audio from a compatible mobile source.
The combination of analog, USB, Dante, and mobile connectivity makes the P300 adaptable to a wide range of conferencing system designs.
Shure Designer Software and System Configuration
The P300 is configured and managed using Shure Designer software.
Designer allows installers to configure audio routing, adjust DSP settings, manage connected Shure devices, and optimize system performance.
The software provides a visual interface for controlling microphone processing, matrix mixing, signal levels, and audio connections.
System presets and predefined routing options help simplify commissioning and reduce setup time.
Designer also supports system planning and configuration for installations involving multiple compatible Shure networked audio products.
Compact Installation with PoE+ Power
The P300 features a compact enclosure designed for discreet installation under tables, behind displays, or inside AV furniture.
An included single-unit mounting tray supports installation without a conventional equipment rack.
For rack installations, the optional Shure CRT1 rack tray accommodates compatible Shure networked audio devices.
The P300 operates using Power over Ethernet Plus (PoE+), Class 4, supplied through a compatible PoE+ network switch or injector.
Its maximum power consumption is 17.5 watts.
This eliminates the need for a separate local power supply and helps simplify cabling in professional AV installations.
Shure IntelliMix P300 Key Features
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Professional IntelliMix digital audio conferencing processor
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Eight channels of acoustic echo cancellation, noise reduction, and automatic gain control
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IntelliMix automatic microphone mixing
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Integrated matrix mixing, compression, delay, and parametric EQ
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10 Dante audio inputs and eight Dante audio outputs
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Dante and AES67 network audio compatibility
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Two balanced analog inputs and two analog outputs
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USB audio connection for compatible conferencing computers
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3.5 mm TRRS connection for compatible mobile devices
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Shure Designer software for configuration and control
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PoE+ Class 4 operation without a separate local power supply
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Compact enclosure with included single-unit mounting tray
Shure IntelliMix P300 Technical Specifications
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Specification
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Details
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Manufacturer
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Shure
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Model
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P300-IMX
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Product Name
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IntelliMix P300 Audio Conferencing Processor
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Product Type
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Digital audio conferencing processor
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DSP Processing Channels
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8
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Acoustic Echo Cancellation
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8 channels
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AEC Tail Length
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Up to 300 ms
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Noise Reduction
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Yes
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Automatic Gain Control
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Yes
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Automatic Mixing
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IntelliMix
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Additional Processing
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Matrix mixing, parametric EQ, compression, delay
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Dante Inputs
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10
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Dante Outputs
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8
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Network Audio Protocols
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Dante and AES67
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Analog Inputs
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2 balanced, three-pin block connectors
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Analog Outputs
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2 impedance-balanced, three-pin block connectors
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USB Connection
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USB 2.0 Type-B
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USB Audio
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Bidirectional, 2 input / 2 output channels
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Mobile Connection
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3.5 mm TRRS
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Network Connection
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RJ-45 Ethernet
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Dante Sampling Rate
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48 kHz
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Dante Bit Depth
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24-bit
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USB Sampling Rate
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48 kHz
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USB Bit Depth
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16-bit or 24-bit
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Frequency Response
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20 Hz–20 kHz (+1, −1.5 dB)
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Analog Input Impedance
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9.6 kΩ
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Analog Output Impedance
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80 Ω
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Analog-to-Dante Dynamic Range
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113 dB, A-weighted
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Dante-to-Analog Dynamic Range
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117 dB, A-weighted
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Total Harmonic Distortion
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Less than 0.05%
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Power Requirements
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IEEE 802.3at Type 2, PoE+ Class 4
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Maximum Power Consumption
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17.5 W
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Dimensions (H × W × D)
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1.6 × 8.3 × 8.9 in. (40 × 210 × 226 mm)
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Weight
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3.8 lb (1.71 kg)
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Operating Temperature
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20°F–122°F (−6.7°C–50°C)
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Control Software
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Shure Designer
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Network Cable
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Cat5e or better; shielded recommended
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Mounting
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Included single-unit tray; optional CRT1 rack tray
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Recommended Applications
Corporate Conference Rooms: Provide centralized microphone processing and audio connectivity for professional video conferencing.
Executive Boardrooms: Integrate ceiling array microphones, computers, and installed audio systems for clear communication.
Higher Education Classrooms: Support hybrid instruction, lectures, and collaborative learning environments.
Council Chambers: Manage audio from compatible networked microphones for public meetings and government facilities.
Training Centers: Provide flexible audio routing and processing for presentations, workshops, and remote participants.
Commercial AV Installations: Integrate Dante microphones, USB conferencing computers, analog audio equipment, and compatible control systems.
Why Buy the Shure IntelliMix P300 from Audio Supply?
Audio Supply provides professional Shure conferencing equipment and commercial audio solutions for businesses, educational facilities, government organizations, and AV integrators.
Whether you're upgrading an existing conference room or designing a new networked audio system, Audio Supply can help you select compatible microphones, audio processors, and installation accessories for your application.
Need a Compatible Ceiling Array Microphone?
The Shure MXA920W/S Ceiling Array Microphone is an excellent companion for the IntelliMix P300.
Featuring Automatic Coverage technology, integrated DSP, and Dante network audio connectivity, the MXA920W/S provides overhead speech pickup for conference rooms, boardrooms, and collaboration spaces.
When paired with the P300, the system combines intelligent microphone coverage with flexible audio routing, USB connectivity, and additional conferencing integration options.
This combination is well suited for professional meeting spaces that require clear speech reproduction without traditional tabletop microphones.
