Grandstream GMD1208 Wireless Desktop Mic with 8 Mics, 12h Battery

The Grandstream GMD1208 is a 105 x 105 mm wireless table microphone with 8 MEMS mics and up to 12 hours of talk time. Add it to a GVC3220 video system to cover the far end of the table, or use it over Bluetooth or USB.

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The Grandstream GMD1208 is a compact square microphone, 105 x 105 mm and just 16.9 mm thick, that sits at the far end of a meeting table and sends what it hears to your conference device wirelessly. It is not a standalone phone and has no speaker. Think of it as an extension mic for the GVC3220 video conferencing system, which can also serve PCs and Bluetooth devices.

Grandstream GMD1208 specifications

Inside are 8 omnidirectional MEMS microphones with dynamic beamforming that focuses on whoever is talking.

• Link distance: up to 66 ft (about 20 m) in 2.4G mode and up to 33 ft (about 10 m) over Bluetooth.
• Audio processing: noise suppression (ANS), AGC/DRC and Noise Shield.
• Weight: only 131.4 g.

Which devices does it work with?

A switch on the back selects the connection mode, and each mode has its own job:

• 2.4G mode: the main link to the Grandstream GVC3220 video system.
• Bluetooth mode: pairs with any Bluetooth host and shows up as gmd1208 plus the last 6 characters of its MAC address.
• USB mode: plug it into a PC or laptop and it becomes the microphone for web meetings.

Pairing in seconds

With the GVC3220, pairing uses ultrasound: hold the mic about 10 cm from the system's speaker and it links automatically.

Battery life and mute control

The 1500 mAh battery delivers up to 12 hours of talk time, so a full day of meetings needs no recharge. It charges through the Micro-B USB port with the included 5V/1A adapter, and the power LED flashes red when the battery drops below 30%. The capacitive mute key silences the nearby seats and its LED turns red. The status LED glows green in 2.4G mode and blue in Bluetooth mode.

Use cases in Saudi Arabia

• Long boardroom tables in companies and government offices.
• Hotel meeting rooms that host client sessions.
• Training halls where trainees sit far from the main unit.
• Executive offices running web meetings from a laptop in USB mode.

Frequently Asked Questions

How long does the GMD1208 battery last?

The 1500 mAh battery gives up to 12 hours of talk time, and it charges through the Micro-B USB port with the included 5V/1A adapter.

Can I use it as a PC microphone?

Yes. In USB mode, connect it with the cable and it appears as a microphone; you may need to set it as the default input device.

Specifications

• Model: GMD1208
• Microphone array: 8 omnidirectional MEMS
• Max connection distance: 2.4G mode: up to 66 ft; Bluetooth mode: up to 33 ft
• Audio features: ANS, AGC/DRC, Noise Shield Technology
• Audio codec: Opus
• Modes: Proprietary 2.4G, Bluetooth, BYOD
• Bluetooth: Bluetooth 2.1+EDR
• Cascade: Up to 2
• Auxiliary ports: Micro-B USB port (charging, BYOD, firmware upgrade)
• LEDs: 1x tri-color status LED, 1x dual-color mute LED, 1x dual-color power LED
• Pairing: Ultrasound pairing
• Power adapter: Universal power adapter included, output 5V 1A
• Battery: 1500 mAh lithium-ion, 12h talk time
• Unit dimensions: 105 x 105 x 16.9 mm
• Unit weight: 131.4 g
• Temperature / humidity: Operating 0-40°C, storage -10 to 60°C, humidity 10-90% non-condensing
• Compliance: FCC Part 15 Class B, UL 60950 (power adapter), Part 68 (HAC)
• Compatible hosts: GVC3220 (2.4G mode), Bluetooth hosts, PC over USB
• In the box: GMD1208 microphone, USB cable, power supply, quick installation guide, GPL license

Features

• 8 MEMS microphones with dynamic beamforming: covers the end of the table far from the main unit.
• 2.4GHz link up to 66 ft (about 20 m): place it at the back of the room with no cable runs.
• 1500 mAh battery with up to 12 hours of talk time: a full day of meetings on one charge.
• 3 connection modes: 2.4G with Grandstream hosts, Bluetooth with other devices, USB as a PC microphone.
• Capacitive touch mute key with LED: attendees mute themselves and see their status at a glance.