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Cyber Acoustics AC-840 Internet USB Mono Headset

BH #CYAC840 • MFR #AC-840
5 reviews
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Cyber Acoustics AC-840 Internet USB Mono Headset
Key Features
  • 30mm Dynamic Driver
  • Noise Cancelling Boom Mic
  • In-Line Volume and Mute Control
  • Leatherette Earpad
The Cyber Acoustics AC-840 Internet USB Mono Headset is an adjustable, over-the-head style headset that can be worn on your right or left side. It connects via USB to a PC or Mac. Featuring a 30mm dynamic driver, the headset makes an ideal choice for Voice over Internet Protocol (VoIP). It has a flexible noise-cancelling boom mic with in-line volume control and a mute switch. The mic can be rotated 180 degrees for convenience. Additionally, the headset is outfitted with a leatherette earpad for comfort.
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Cyber Acoustics AC-840 Overview

The Cyber Acoustics AC-840 Internet USB Mono Headset is an adjustable, over-the-head style headset that can be worn on your right or left side. It connects via USB to a PC or Mac. Featuring a 30mm dynamic driver, the headset makes an ideal choice for Voice over Internet Protocol (VoIP). It has a flexible noise-cancelling boom mic with in-line volume control and a mute switch. The mic can be rotated 180 degrees for convenience. Additionally, the headset is outfitted with a leatherette earpad for comfort.

In-line volume and mute control
DNTC4: Direct Noise Cancelling Microphone Technology
180-degree microphone
Leatherette earpad for comfort
Adjustable boom arm
Can be worn on the right or left side
PC and Mac compatible
UPC: 646422101323

Cyber Acoustics AC-840 Specs

Key Specs
Wearing Style
Single Ear with Headband
Earpiece Design
On-Ear (Supra-Aural)
Sound Field
Mono
Built-In Mic
Yes (on Boom)
Noise Cancelling Microphone
Yes
Wireless
No
Audio Connector
1x USB-A
Headphone
Wearing Style
Single Ear with Headband
Earpiece Design
On-Ear (Supra-Aural)
Sound Field
Mono
Driver Size
1.2" / 30 mm
Active Noise Cancellation
No
Built-In Controls
Yes (on Cable): Mute, Volume
Sensors
No
Microphone
Built-In Mic
Yes (on Boom)
Noise Cancelling
Yes
Connectivity
Wireless
No
Wired Audio Connector
1x USB-A
Cable Design
Non-Detachable / Straight
Cable Length
6.9' / 2.1 m
Charging Case
Charging Input
Passive Headset-No Power Required
Wireless Charging
No
Physical
Color
Gray
Packaging Info
Package Weight
0.2 lb
Box Dimensions (LxWxH)
8.5 x 6.85 x 2.3"

Cyber Acoustics AC-840 Reviews

No eco cancellation

By Wijdan
Rated 1 out of 5
Date: 2020-09-28

I regret buying this product. Very disappointed

It does not do the work

By Carlos
Rated 2 out of 5
Date: 2016-02-15

I bought to use with Skype and the sound was bad

See any errors on this page?

Which USB?

Which USB?
Asked by: David
The Cyber Acoustics AC-840 Internet USB Mono Headset, B&H # CYAC840, would use a USB-A.
Answered by: Elliot A
Date published: 2026-05-21
  • y_2026, m_10, d_16, h_11CST
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