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Studio Technologies Model 372A Intercom Beltpack with Dante

BH #STM372A • MFR #M372A
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Studio Technologies Model 372A Intercom Beltpack with Dante
Key Features
  • Compact Dante Intercom Beltpack
  • One Talk and Two Listen Channels
  • Supports Dynamic and Electret Mics
  • 5-Pin XLR and 3.5mm TRRS Inputs
With support for both dynamic and electret-condenser microphones, the Studio Technologies Model 372A offers compatibility with a wide range of broadcast and gaming headsets. Users can connect via the 5-pin female XLR headset connector or the 3.5mm TRRS jack, making the unit equally suited for professional-grade headsets or consumer earbuds. Its one talk/two listen configuration is especially effective in real-world production, where crew members primarily monitor producer or director instructions while having access to a secondary program or “show audio” channel.
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Studio Technologies M372A Overview

With support for both dynamic and electret-condenser microphones, the Studio Technologies Model 372A offers compatibility with a wide range of broadcast and gaming headsets. Users can connect via the 5-pin female XLR headset connector or the 3.5mm TRRS jack, making the unit equally suited for professional-grade headsets or consumer earbuds. Its one talk/two listen configuration is especially effective in real-world production, where crew members primarily monitor producer or director instructions while having access to a secondary program or “show audio” channel.

Dante Integration and Flexibility
Operating over standard Ethernet with Power-over-Ethernet (PoE), the Model 372A integrates seamlessly into Dante networks. It can be deployed as part of a party-line intercom system using the Studio Technologies Model 5422 Dante Intercom Audio Engine, connected point-to-point, or integrated with Dante-compatible matrix intercoms. Each beltpack provides one transmit and two receive channels with 24-bit / 48 kHz audio, AES67 support, and compatibility with Dante Domain Manager (DDM). STcontroller software allows fine-tuned configuration, including microphone gain, talk button behavior, sidetone, and headphone routing.
User-Centered Design
The talk push-button can be set to Push-to-Talk, Latching, or Tap-to-Latch modes, while two recessed rotary controls let users easily adjust headphone levels. Call signal reception is supported, with the talk button’s LED flashing and lighting when a 20 kHz in-band call signal is detected, ensuring clear communication and cueing. The integrated pneumatic shockmount, low-noise preamp, compressor, and DAC/ADC design deliver pro-grade audio performance with low distortion, high headroom, and excellent off-axis rejection.
Rugged and Reliable
Built from lightweight aluminum with a stainless steel belt clip, the Model 372A is designed for durability in demanding environments. Its etherCON RJ45 connector ensures a secure, locking Ethernet connection, while firmware updates via USB or network keep the unit future-ready. The beltpack's compact footprint, moderate price, and compatibility with a broad range of headsets make it an efficient, scalable solution for productions of any size.
Details
  • One talk channel and two listen channels
  • Dante audio-over-Ethernet with AES67 support
  • STcontroller software for flexible configuration
  • Supports dynamic and electret microphones
  • 5-pin XLR and 3.5mm TRRS headset connectors
  • Call receive and display function
  • Onboard DSP with compressor, EQ, and delay
  • Powered by PoE via etherCON RJ45
  • Rugged aluminum housing with belt clip
  • Excellent audio quality with low noise and high headroom

Studio Technologies M372A Specs

Network Technology
Type: Dante Audio-over-Ethernet
AES67-2013 Support: Yes
Dante Domain Manager (Ddm) Support: Yes
Bit Depth: Up to 24
Sample Rate: 48 kHz
Number of Transmitter (Output) Channels: 1
Number of Receiver (Input) Channels: 2
Dante Audio Flows: 4; 2 Transmitter, 2 Receiver
Network Interface
Type: 100BASE-TX, Twisted-Pair Ethernet, Power-over-Ethernet (PoE) Supported
Data Rate: 100 Mb/S (10 Mb/S and 1000 Mb/S GigE Ethernet Not Supported)
Compatibility
Headset A: Single- or Dual-Ear Broadcast-Style with Dynamic or Electret (Low-Voltage DC-Powered) Microphone: Pin-1 Mic Common; Pin-2 Mic; Pin-3 Phones Common; Pin-4 Phones Left; Pin-5 Phones Right
Headset B: Ctia/Ahj Configuration (Typically Uses Electret Powered Mic): Tip Phones Left; Ring-1 Phones Right; Ring-2 Common; Sleeve Mic
Audio Channels
1 x Talk, 2 x Listen
Microphone Input
Compatibility: Dynamic or Electret (Low-Voltage DC-Powered) Microphones
Type: Unbalanced
Electret Microphone Power: 3.3 Volts DC via 2.00 K Resistor, Selectable On/Off
Impedance: 1 Kilohm, Nominal, Microphone Power Off; 690 Ohms, Nominal, Microphone Power On
Gain: 24, 30, 36, 42, or 48 DB, Selectable, Ref. -60 dBu Input to Dante Output (-20 dBFS Nominal)
Frequency Response: 40 Hz to 20 kHz, -3 dB
Distortion (THD+N): <0.02% (at Minimum Gain)
Dynamic Range: 91 dB of Dynamic Range
Compressor
Application: Applies to Dante Transmitter (Output) Channel and Sidetone Audio
Threshold: 2 DB Above Nominal Level (-19 dBFS)
Slope: 2:1
Status Led: Compressor Active
Headphone Output
Type: 2-Channel
Compatibility: Intended for Connection to Stereo (Dual-Channel) or Monaural (Single-Channel) Headsets with Nominal Impedance of 50 Ohms or Greater
Maximum Output Voltage: 2.8 Vrms, 1 kHz, 150-Ohm Load
Frequency Response: 20 Hz to 10 kHz, -3 dB
Distortion (THD+n): < 0.002%
Dynamic Range: > 100 dB
Call Handling
Implementation: Monitors Both Dante Receiver (Input) Channels for Presence of Call Signals
Signaling Method: 20 kHz, ±800 Hz, within Audio Channels
Call Receive Level: -27 dBFS Minimum
Connectors
Headset A: 5-Pin Female XLR
Headset B: 4-Conductor (TRRS) 3.5 mm Jack, per Japanese Standard Jeita/Eiaj RC-5325A
Ethernet: Neutrik NE8FBH etherCON RJ45 Receptacle
USB: Type a Receptacle (Located Inside Model 372A's Enclosure and Used Only for Application Firmware Updates)
Configuration
Requires Studio Technologies' STcontroller Software Application, Version 2.01.00 and Later
Environmental
Operating Temperature: 32 to 122°F / 0 to 50°C
Storage Temperature: -40 to 158°F / -40 to 70°C
Humidity: 5 to 95%, Non-Condensing
Altitude: Not Characterized
Dimensions
Width: 3.1" / 7.9 cm
Height: 1.8" / 4.6 cm (With Belt Clip)
Depth: 4.9" / 12.9 cm
Weight
0.5 lb / 0.23 kg
Packaging Info
Package Weight
0.93 lb
Box Dimensions (LxWxH)
8.9 x 7.2 x 4"

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