Professional sound,
in the room and on the call.
Professional sound for every seat at the table. Cardioid condenser gooseneck microphones deliver superb audio quality and excellent speech intelligibility, so every word is clear in the room, through your PA and on your Zoom, Microsoft Teams or Google Meet call. A plug-and-play, turn-key conference system for panel discussions, plenary sessions and press conferences.
Buy Now System IncludesPress once to talk, press again when you finish
One-cable, daisy-chain installation. Easy to use, with no operator required.
Press to speak
Participants press the push button once to start talking and again when they finish. A LED ring light identifies the active microphones.
Everyone is heard
Each unit has a cardioid electret condenser gooseneck microphone (50 to 18,000 Hz, up to 125 dB SPL) and a built-in speaker, so every participant hears the discussion clearly.
The chair stays in control
The chairman unit has a priority button to temporarily or permanently override and deactivate all active delegate units.
System Includes:
- (5)DU-300 Delegate Units (each delegate unit comes with a 6.6ft (2m) cable attached).
- (1)CU-300USB Control Unit.
- (1)CH-300 Chairman Unit.
- (1)9.8 ft (3m) CBL300-3 extension cable.
- (2)16.4 ft (5m) CBL300-5 extension cable.
Connect the room to your video call by USB
The CU-300USB control unit has a USB-C port (USB 2.0) for teleconferencing. Remote participants on Zoom, Microsoft Teams or Google Meet hear the room, and the room hears them.
Optional external PA system
Connect the control unit to a PA system. All conference microphones are summed and sent to the mixer.
Optional teleconference equipment
Use the USB connection with a computer for Zoom, Microsoft Teams or Google Meet.
Optional wireless handheld microphone
Add a wireless handheld microphone to the system, as shown in the setup diagram.
Recording: the control unit has a recording output to connect a digital recorder.
- Panel discussions
- Plenary sessions
- Press conferences
- Videoconferences on Zoom, Microsoft Teams and Google Meet
- USB connectivity for teleconferencing.
- Plug and play, one-cable daisy-chain installation.
- Superb audio quality with a cardioid condenser capsule and excellent speech intelligibility.
- Full discussion control.
- Highly flexible and customizable, expandable up to 150 units.
- Easy to use, no operator required.
- Built-in speakers in each unit.
- LED ring light indicator to identify active microphones.
Three units that work as one system
CU-300USB Control Unit
- Core of the discussion system: it controls and powers the delegate and chairman units.
- Handles up to 50 microphone units.
- Up to 3 control units can be interconnected for 150 microphone units.
- USB-C port for teleconferencing.
CH-300 Chairman Unit
- Same functions as the delegate unit, plus a priority button.
- The priority button temporarily or permanently overrides all active delegate units.
- 6.6 ft cable attached.
DU-300 Delegate Unit
- ON/OFF push button controls the microphone.
- Listen through the internal loudspeaker or the external headphone.
- Daisy chain one to another with the 6.6 ft cable attached.
Extend the layout for your room
CBL-300 extension cables
Available in 9.8 ft (3 m), 16.4 ft (5 m), 32.8 ft (10 m) and 65.6 ft (20 m). Cables can be interconnected for longer lengths. Recommended for greater flexibility in different microphone layouts.
CAS-306U carrying case
Choose the CAS-306U option above to carry and protect the system.
System Setup
Technical specifications
CU-300USB control unit
| Operating voltage | 100-240 VAC, 50/60 Hz (auto-switching) |
|---|---|
| Current consumption | MAX 0.9 A (100 VAC) · 0.3 A (240 VAC) |
| DC supply to contribution units | ±15 V |
| Line, telephone coupler and insertion in/outputs (unbalanced) | Input sensitivity -14 dBV/+11 dBV · input impedance 33 kΩ · output level -14 dBV/+11 dBV · output impedance 500 Ω |
| Recorder in/out (unbalanced) | Input sensitivity -20 dBV/+5 dBV · input impedance 47 kΩ (L and R) · output level +0/-30 dB · output impedance 500 Ω |
| External microphone input (balanced) | Input sensitivity -56 dBV · adjustment +6 dB/-6 dB · phantom power 12 V ±1 V, 2 × 680 Ω (±2%) |
| Headphone output | Output level -8 dBV/+2 dBV · output impedance 22 Ω |
USB interface
| USB connector | USB-C port, USB 2.0 compliant |
|---|---|
| DAC sampling rates | 32, 44.1, 48 kHz |
| ADC sampling rates | 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz |
| Converter | 16-bit |
| USB interface power | 5 V, 100 mA maximum via USB connection |
CH-300 chairman and DU-300 delegate units
| Gooseneck microphone | Electret condenser |
|---|---|
| Frequency response | 50 to 18,000 Hz |
| Polar pattern | Cardioid |
| Max. SPL for 1% THD | 125 dB |
| Gooseneck length | 15" / 40 cm |
System limits
| Maximum units per control unit | 50 delegate and chairman units in total |
|---|---|
| Maximum per trunk output | 25 units |
| Maximum cable length per trunk | 328 ft (100 m), including the 6.6 ft (2 m) cable attached to each unit |
| Interconnected control units | Up to 3, for a maximum of 150 microphone units |
Planning a conference room or boardroom?
Tell us about your room, how many people will take part and whether you meet on Zoom, Teams or Meet, and we will help you set up the right conference system.
Call (888) 737-4030 Chat with a specialistFAQs About the 6-Person USB Conference System
Can I connect the system to Zoom, Microsoft Teams or Google Meet?
Yes. The CU-300USB control unit has USB connectivity for teleconferencing, compatible with Zoom, Microsoft Teams and Google Meet.
Does a participant need to hold the microphone button while talking?
No. They press it once to start talking and again when they finish.
How many participants can talk at the same time?
Assuming each participant has their own microphone, up to four with delegate units. There is no limit for chairman units to be lit at the same time.
How many microphone units can I use?
Each control unit powers up to 50 delegate and chairman units, and up to three control units can be connected for a maximum of 150 microphones. Each control unit has two trunks on the back, and each trunk supports a daisy chain of up to 25 units.
How are the units connected?
The tabletop units connect with 7-pin DIN connectors, a secure connection that does not unplug when units are moved on the furniture. They are daisy-chained to one another, and each unit has a 2 m (6.5 ft) cable attached. Extension cables of 3, 5, 10 and 20 m are available.
Is the system compatible with my PA system?
The conference systems are compatible with nearly every professional audio-visual PA system. The control unit provides line-level output via RCA connectors and auxiliary outputs. All conference microphones are summed and provided as one output to the mixer.
Can I record my meetings?
Yes. The control unit has a recording output to connect to a digital recorder.
