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Learn about headphones (part 2)


Types of connection ports of headphones

Wired Headphones

  • 3.5mm-jack compatible headphones

The 3.5mm mini jack is also known as the "headphone jack". Basically, this is the most widely used way to connect music devices to the audio output. It is found mostly on portable headsets, laptops, MP3 players, radios, tablets, smartphones and other audio devices. Morover, 3.5mm jack type is quite flexible, users can listen to music and use headphones for calls.

headphones 3.5mm
PROS
  • Easy to connnect
  • High availability
  • Good electrical insulation
CONS
  • No locking mechanism
  • Easily damaged, broken
  • 6.5mm-jack compatible headphones

The standard 6.5mm jack connector is slightly larger and is mainly found on Hi-Fidelity headphones and professional headsets; 6.5mm jack can connect to 3.5mm better amplifier and audio system; In addition, gold plated for better electrical conductivity and avoid oxidation.

headphones 6.5mm
  • Type-C jack compatible headphones

USB Type-C jack was born to fill the void left by headsets using a dedicated jack after smartphone lines were ditching their traditional headphone jack. Even so, it is extremely scarce and expensive. The USB Type C jack is not very popular so it causes compatibility issues not only port compatibility but also wire compatibility and sometimes it only allows charging but not data transfer. In addition, standards and specifications may vary.

tai nghe type c
PROS
  • Good sound quality
  • Good sound transmission and noise insulation
CONS
  • Problems with compatibility
  • Vulnerable to phase shake
  • Expensive price
  • Type-A jack compatible headphones

USB Type-A headset for computer users. Beside that, office headsets for VOIP primarily use USB to connect to computers, allowing them to have only one connector for audio and microphone.

headphones type a

Wireless Headphones

  • Bluetooth headphone

Bluetooth headsets appeared a few years ago and are now widely used. The range of a Bluetooth headset is usually 10-15 meters. On-Ear, Over-Ear, and In-Ear headsets can all use Bluetooth; Basically they are often bulkier and heavier than traditional wired headsets with built-in batteries and electronics. However, these disadvantages are solved quite well on high-quality Bluetooth headsets thanks to current technology.

headphone on-ear
PROS
  • Easy to carry and store
  • Easy to connect
  • Less power consumption
  • Less interference
CONS
  • There is a lag in the connection.
  • Limited in scope
  • Poor battery life
  • True Wireless Stereo

The TWS headphones are completely wireless with no connection of any kind between the two headphones. Basically, it uses Bluetooth technology. Each headset is equipped with Bluetooth, battery and amplifier, and more. Single device connects to the source device individually. In addition, it delivers excellent sound quality with noise cancellation.

headphone bluetooth
PROS
  • Fashionable
  • Convenient, compact
  • Easy to carry
CONS
  • Short battery life
  • Easy to fall, lose (due to small size)
  • The connection is occasionally disrupted.
  • Sound quality is worse than wired device
  • The control buttons are a little tricky to use.
  • High price
  • Neckband Headphones

Initially, neckband design, also known as neckband headphones. As a matter of fact, this is a type of headset that easily hugs the user's collar or neck. Similarly, it uses Bluetooth technology to connect to a smartphone or laptop. Obviously, with these headphones, users don't have to worry about wires or the device it's connected to. Besides, they can easily move around without fear of entangled wires. The controls are conveniently placed and for taking calls or listening to some sounds. It has good battery life, which lasts about 12 hours. In addition to offering a stylish look, its noise-cancelling feature delivers excellent sound quality even in crowded places.

 neckband
PROS
  • Simple and convenient
  • Good battery life
  • Stylish, trendy
  • Fairly light weight
  • The extension cord helps to prevent the device from being dropped/lost

CONS

  • Sound quality is not good
  • Small operating range
  • Ultra High Frequency (UHF) Headphones 

Generally, UHF transmit signals over the air through their own transmitters. Basically, this technology is mainly used in Hi-Fidelity headphones. UHF models use two frequency bands to transmit signals: 863-865 MHz or 2.4 GHz. Especially, the usable range is further than that of Bluetooth headphones, up to 91 meters, but at the same time bulkier and heavier. In addition, UHF technology delivers rich surround sound.

ufh headphones

PROS

  • Free broadcast (not blocked by walls)
  • Broadcast far and wide
  • Easy setup

cons

  • Big and heavy
  • Limited design choices
  • Headphones Infrared

Infrared transmit data over infrared wavelengths. Generally, this is short- and medium-range wireless technology, also known as Line of Sight/LOS technology. Basically, it means that the user needs to be within range of the transmitter to receive audio. Especially, that offers more privacy because it creates a single connection, no worries about anyone tuning into the same band on their wireless headphones. Therefore, it suitable for people who like to watch TV or listen to music wirelessly. Morover, infrared headphones have an effective range of about 10 meters or less and are known for their ability to produce high-quality sound. Battery life up to 20 hours.

 over ear headphones

PROS

  • Standalone use device
  • Excellent sound quality
  • Privacy

CONS

  • Line of sight must be clear of obstructions
  • Small operating range

2-in-1

Generally, 2-in-1 headphones are headphones that offer both types of connectivity, both wired and wireless. As for the wired connection, they can connect to compatible devices not only via the 3.5mm jack but also via Bluetooth for wireless. Specifically, this type of headset has a detachable 3.5mm cable. Therefore, it offers the convenience of a wireless headset and the sound quality of a wired headset. Morover, users don't need to worry about their battery running out.

2in1 headphones

Earphone comparison

Headphones

Size

Level of comfort

Sound quality

Price

In-Ear

Small

Medium

Low

Low

Earbuds

Small

Medium

Medium

Affordable

On-ear

Medium

Low

Medium

Affordable

Over-ear

Large

Medium

High

High

Open-Ear

Small

Medium

Low

High

Closed-back

Medium

Low

Medium

Low

Open-Back

Medium

Medium

Good

Low

Noise-Cancelling

Diversity

High

High

High

Noise-Isolating

Large

High

High

High

Application: PBX headset

Referring to headphones, we all immediately think of personal headsets for phones or computers, a tool for interesting personal communication or entertainment. However, switchboard headsets are a completely different segment.

PBX headsets or have other professional names such as Call center headsets or Telesale headsets - these are:
headphones
  • First: A line of dedicated headphones
  • Second: Ideal and professional solution for agents who are employees in the online sales, consulting, and customer care industries.
  • Third: Headset line to be used with VoIP devices (such as IP phones, softphones, PC computers)
  • Fourth: Compact design, focusing on voice for listening / calling, noise cancellation and the ability to adjust the belt, microphone
  • Fifth: The device helps employees to be more comfortable with prolonged calls, reduces fatigue, reduces the impact of general noise, thereby improving work productivity.

With call centers, switchboard headsets are one of the devices that always need a large quantity to equip employees, as a result finding cheap and good quality products is always a concern of many people enterprise.

Classification and characteristics of PBX headsets

Mono Headset 

Duo Headset

  • Sound quality: Duo headphones are better than Mono headphones. However, using Duo headphones for a long time is easier to cause headaches than Mono headphones.
  • Popular designs:
    First, design based on On-Ear headphones
    Sencond, built-in with 330-degree adjustable microphone
  • Size: compact
  • Earcups: Closed-Back and Noise-Isolating earcups are widely used in switchboard headsets. Especially, with high-end switchboard headsets, Noise-Cancelling earcups are commonly applied.
  • Connection ports: PBX headsets usually have three main types of ports
    Straight jack (3.5mm): connect to a traditional desk phone
    RJ9 jack: connect to IP phone
    USB jack: connect to PC or laptop
Advantages and disadvantages of PBX headsets
ADVANTAGES
  • Good quality sound
    The HD (High Definition) sound quality of a PBX headset will improve your interactions with customers and partners, at the same time eliminating the hassle of having to decode obscured or unclear audio.
  • The ability to filter noise
    The PBX headset is integrated with modern technology capable of reducing or eliminating noise even in a noisy working environment, the optimally positioned headset microphone helps exchange information clearly, as a result making increase customer satisfaction.
  • Free your hands
    When using the headset, we will not need to use our hands because it is always fixed. From that, this helps to understand productivity faster, more comfortably and professionally.
DISADVANATAGES
  • Calls cannot be made right on the headset, but must use a supporting dialer (Softphone, IP phone)
    Conventional switchboard headsets will be limited by the built-in buttons to turn off calls. However, some PBX headsets like the DQN HU810 have a built-in quick answer button on the control bar, quickly launching MS Teams and navigating to the call to help overcome this limitation.
  • Call quality depends directly on the connected device or software
    If the USB headset has a digital audio signal processor (DSP) and good noise cancellation like the DQN HU810 Call center headset, the problem of depending on the connected device or the software becomes less or less important. 
  • No ringing or very low tone when there is an incoming call
    Currently, the latest line of headphones are improving this situation, therefore we will own the best quality headphones.

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