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EPOS Audio Expand 40T Conference Speakerphone

The EPOS EXPAND 40T is a premium conference speakerphone designed for professional environments. It offers superior sound quality, noise and echo cancellation technology for clear communication during video conferences or meetings

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EPOS Audio Expand 40T Conference Speakerphone

The EPOS Audio Expand 40T is a cutting‑edge conference speakerphone designed to deliver crystal‑clear audio for meetings of all sizes. With its advanced Bluetooth and USB connectivity, it seamlessly integrates into any office environment, whether you’re hosting a small team huddle or a large corporate presentation.

Key Features & Technical Specifications

  • Power Source: Dual‑mode power – rechargeable Lithium Polymer (LiPo) battery and USB charging. Battery recharge time is just 3.3 hours, providing up to a full day of use on a single charge.
  • Battery Capacity: 1.3 A current draw with a 5 V charging voltage ensures reliable performance during extended sessions.
  • Bluetooth Connectivity: Supports Bluetooth 5, offering stable and low‑latency audio transmission. Compatible profiles include A2DP, AVRCP, DI, HFP, and HSP.
  • USB Interface: Equipped with a USB Type‑C port for both charging and data transfer. An adapter (USB Type‑C female to USB Type‑A male) is included for versatile connectivity.
  • Frequency Response: Wide audio range of 100 Hz – 20 kHz, ensuring that every voice nuance is captured accurately.
  • Microphone Array: Three high‑sensitivity microphones (150–7500 Hz) with built‑in noise reduction and mute functionality, guaranteeing clear pickup even in noisy environments.
  • Operating Conditions: Designed for indoor use at temperatures between 10 °C – 40 °C and humidity levels of 20 % – 85 %. Storage conditions are more tolerant, ranging from -20 °C to 60 °C in temperature and 10 % – 95 % relative humidity.
  • Dimensions & Build: Compact form factor with a height of 350 mm, length of 374 mm, and width of 310 mm. Constructed from durable materials, it’s both portable and robust.
  • Maximum Operating Distance: Up to 25 m for wireless audio transmission, allowing flexible placement within a room or across multiple rooms.
  • LED Indicators: Visual status lights provide real‑time feedback on power, connectivity, and battery level.
  • Magnetic Mounting: Features a neodymium magnet for secure attachment to metal surfaces, enabling quick setup on desks or walls.
  • Noise Reduction: Advanced algorithms filter out background hiss and echo, delivering pristine audio quality.

Design & Aesthetics

The Expand 40T comes in a sleek black or grey finish that blends effortlessly with modern office décor. Its minimalist silhouette is complemented by subtle LED indicators and a discreet charging port, ensuring the device remains unobtrusive while still providing essential functionality.

Connectivity & Compatibility

Whether you prefer wireless or wired connections, the Expand 40T offers both:

  • Bluetooth 5: Enables quick pairing with laptops, tablets, and smartphones. The device automatically reconnects to previously paired devices.
  • USB Type‑C: Provides a reliable wired connection for high‑fidelity audio streaming or as an alternative power source.

The speakerphone is fully compatible with major collaboration platforms such as Microsoft Teams, Zoom, and Google Meet. Its built‑in microphone array captures voices from all corners of the room, making it ideal for remote participants who rely on clear audio transmission.

Portability & Setup

The Expand 40T’s lightweight construction and integrated neodymium magnet allow for effortless mobility. Users can mount the device on a metal desk or wall, or simply place it on a tabletop. The included USB Type‑C to Type‑A adapter ensures that even older devices can connect without additional accessories.

Durability & Reliability

Built for continuous use, the Expand 40T’s Lithium Polymer battery and robust casing withstand frequent handling and environmental variations. The device’s operating temperature range of 10 °C to 40 °C ensures stable performance in typical office settings, while its storage specifications allow it to be safely kept in a variety of conditions.

Advanced Audio Processing

The three‑mic array is engineered for optimal sound capture. Each microphone covers a frequency range from 150 Hz to 7500 Hz, ensuring that both low and high vocal tones are accurately recorded. Noise reduction algorithms actively suppress ambient sounds, while the mute function provides instant control over audio input.

Power Management & Battery Life

The device’s battery life is optimized for typical meeting durations. With a 3.3‑hour recharge time and a 1.3 A current draw, users can rely on the Expand 40T to power through an entire workday without interruption.

Environmental Considerations

The Expand 40T’s operating humidity tolerance of 20 % – 85 % and temperature range of 10 °C – 40 °C make it suitable for most indoor environments. Its storage specifications further ensure that the device can be safely kept in a variety of conditions, from cold warehouses to warm shipping containers.

Conclusion

The EPOS Audio Expand 40T Conference Speakerphone is engineered to meet the demands of modern collaboration. With its dual power options, robust Bluetooth and USB connectivity, advanced microphone array, and sleek design, it delivers reliable, high‑quality audio for any professional setting. Whether you’re hosting a quick team call or a large corporate meeting, the Expand 40T provides the clarity and convenience needed to keep conversations flowing smoothly.

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Identifiers

Brand
EPOS EXPAND
MPN
EPOS EXPAND 7329740
ID
28187061

Key Features

Auto
Yes
Battery recharge time
3.3 h
Battery technology
Lithium Polymer (LiPo)
Bluetooth profiles
A2DP, AVRCP, DI, HFP, HSP
Bluetooth version
5
Cables included
USB Type-C
Colour
Black, Grey
Current
1.3 A
Device type
Universal
Frequency band
2.402 - 2.48 GHz
Frequency Range
100 - 20000 Hz
Harmonized System HS code
85182900
Interface
USB/Bluetooth
Interface adapters included
USB Type-C female - USB Type-A male
Magnet type
Neodymium
Master outer case height
350 mm
Master outer case length
374 mm
Master outer case width
310 mm
Maximum operating distance
25 m
Microphone frequency
150 - 7500 Hz
Number of microphones
3
Operating relative humidity
20 - 85 %
Operating temperature
10 - 40 °C
Packaging content
BTD 800 USB-C Bluetooth dongle
Power source type
Battery, USB
Products per master (outer) case
20 pc(s)
Sensitivity
-89 dB
Storage relative humidity
10 - 95 %
Storage temperature
-20 - 60 °C
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