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Studio Technologies Model 348 Intercom Station

Model: M348

Studio Technologies Model 348 Intercom Station
Studio Technologies Model 348 Intercom Station
Studio Technologies Model 348 Intercom Station
Studio Technologies Model 348 Intercom Station
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  • Not yet reviewed

About: Studio Technologies Model 348 Intercom Station

The Model 348 Intercom Station provides eight independent talk and listen channels that are compatible with Dante® audio-over-Ethernet networks. The desktop unit is designed to serve as an audio control center for production and support personnel in numerous applications including on-air television sports and news broadcasting, live events, theater, industrial, and corporate AV. The Model 348's channels can be part of virtual "party-lines" created with other compatible devices or be used directly in point-to-point intercom implementations. The range of resources makes it simple to use the Model 348 locally, or as part of a REMI or "At-Home" geographically diverse implementation. In addition to intercom applications, the unit can create multiple independent IFB (talent cue) channels. Other applications may benefit from the Model 348 user's ability to easily create monitor mixes from the eight input audio channels. This makes the unit a viable choice for listen-only scenarios.

Key Features

  • Dante audio-over-Ethernet technology
  • Excellent audio quality
  • Eight independent talk and listen channels
  • 5-pin female XLR headset connector
  • 3.5 mm 4-conductor TRRS headset connector
  • 1/4" gooseneck microphone connector
  • Built-in speaker
  • IFB talent cueing functions
  • Call send and receive functions
  • Uses STcontroller for configuration
  • Redundant Ethernet connections
  • PoE and 12 Vdc powering


Applications: Dante-based intercom, IFB (interrupted foldback) master station, audio monitor mixer, specialized tone generator

Power Sources:
Power-over-Ethernet (PoE): class 0 (classification unimplemented, ≤12.94 watts) per IEEE® 802.3af
External: 10 to 18 volts DC, 0.65 A maximum at 10 volts DC (can be powered by optional PS-DC-02)

Network Audio Technology:
Type: Dante audio-over-Ethernet
AES67-2013 Support: yes, selectable on/off
Dante Domain Manager (DDM) Support: yes
Ethernet Interface Configuration: Switched or Redundant
Bit Depth: 16, 24, or 32
Sample Rate: 48 kHz
Dante Receiver (Input) Channels: 16
Dante Transmitter (Output) Channels: 11
Dante Audio Flows: 32; 16 transmitter, 16 receiver
Internal Digital Audio Processing: 32-bit, fixed
Input-to-Output Audio Processing Latency: <200 uSec
Nominal Input and Output Level: –20 dBFS

Network Interfaces: 2, Primary-PoE and Secondary
Type: 1000BASE-T (Gigabit Ethernet (“GigE”)) per IEEE 802.3ab (10 and 100 Mb/s not supported)
Power-over-Ethernet (PoE): per IEEE 802.3af (applicable to Primary-PoE network only)

Microphone Input – Headset:
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
Compatibility – Headset B: CTIA™/AHJ configuration (typically uses electret powered mic): tip phones left; ring 1 phones right; ring 2 common; sleeve mic
Type: unbalanced
Impedance: 1 k ohms, nominal, microphone power off; 690 ohms, nominal, microphone power on
Gain: 26, 32, 38, 44, 50 dB, selectable
Frequency Response: –4 dB at 30 Hz, –2.6 dB at 40 Hz, –1.8 dB at 50 Hz, –2.4 dB at 10 kHz, –3.8 dB at 20 kHz
Distortion (THD+N): <0.09%, measured at –20 dBFS, 22 Hz to 22 kHz bandwidth, 38 dB of gain
Dynamic Range: >93 dB, A-weighted, 26 dB gain

Microphone Input – Gooseneck:
Compatibility: Studio Technologies' GME-3-12
Microphone Power: 5 volts DC via 4.99 k resistor
Impedance: 3.3 k ohms, nominal
Gain: 12, 18, 24, 30, 36 dB, selectable
Frequency Response: –3.0 dB at 40 Hz, –2.0 dB at 50 Hz, –2.0 dB at 16 kHz, –3.0 dB at 20 kHz
Distortion (THD+N): <0.04%, measured at –20 dBFS, 22 Hz to 22 kHz bandwidth, 36 dB of gain
Dynamic Range: >97 dB, A-weighted, 12 dB gain

Application: applies to headset and gooseneck microphone audio
Threshold: 1 dB above nominal Dante output level (–19 dBFS)
Slope: 2:1
Status LED: compressor active

Dante Receivers (Inputs) – Monitor 1-8:
Frequency Response: 20 Hz to 20 kHz, +0/ –0.7 dB

Dante Receivers (Inputs) – IFB Program 1-8:
Frequency Response: 20 Hz to 20 kHz, +0/ –0.7 dB

Headset Headphone Output:
Type: 2-channel (stereo)
Compatibility: intended for connection to stereo (dual-channel) or monaural (single-channel) headsets with a nominal impedance of 50 ohms or greater
Maximum Output Voltage: 3.0 Vrms, 1 kHz, 150 ohm load
Frequency Response: 20 Hz to 20 kHz, +0/–1 dB
Distortion (THD+N): <0.02%
Dynamic Range: >93 dB

Speaker Monitor Output:
Type: single-channel (monaural)
Speaker: 1.3-inch (32 mm) diameter
Maximum Power: 4 watts RMS, nominal
Frequency Response: 150 Hz to 20 kHz, ±3 dB

18 kHz and 20 kHz Tone Outputs:
Type: sine wave
Level: –20 dBFS
Frequency Accuracy: <10 ppm
Distortion: <0.0001%

Call Function:
Receive Frequency: 20 kHz, ±800 Hz, within audio channel
Receive Level: –27 dBFS minimum
Send Frequency: 20 kHz
Send Level: –20 dBFS
Audible Alert: 3-burst sequence, 524 Hz, sine wave, selectable level range

Headset A: 5-pin female XLR
Headset B: 3.5 mm 4-conductor TRRS jack, per Japanese standard JEITA/EIAJ RC-5325A
Gooseneck Microphone: ¼-inch 3-conductor with 7/16-20 UNF threaded bushing; 4-40 hex head socket set screw allows microphone to be secured into bushing
Ethernet: 2, Neutrik NE8FBH etherCON RJ45 receptacles
External DC: 4-pin male XLR (pin 1 negative, pin 4 positive)
USB: type A receptacle (used only for updating firmware)

Configuration: requires Studio Technologies' STcontroller software application, version 2.06.00 and later

Operating Temperature: 0 to 50 degrees C (32 to 122 degrees F)
Storage Temperature: –40 to 70 degrees C (–40 to 158 degrees F)
Humidity: 0 to 95%, non-condensing
Altitude: not characterized

Spare Connector Location: 1
Allows a Studio Technologies' cable assembly or option module to be installed. Also compatible with Neutrik NC*D-L-1 connectors (*=3F, 3M, 5M, 6F, 6FS, etc.).

Dimensions (Overall):
6.5 inches wide (16.5 cm)
2.9 inches high (7.4 cm)
4.9 inches deep (12.5 cm)

Deployment: intended for tabletop applications

Weight: 2.1 pounds (0.95 kg) is a Canadian authorized Studio Technologies retailer.

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