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PLANTRONICS .Audio 645 USB Supra-aural Behind-the-Head Stereo Headset

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Learn more about the Plantronics .Audio 645 USB


.Audio 645 USB


Ear Coupling


The Plantronics .Audio 645 USB headset combines rich stereo sound with digitally enhanced voice quality for Skype, Windows Live, or Yahoo Messenger Internet calling. A choice of connectivity—analog or USB—makes it easy to plug and play. Enjoy consistent, high-quality audio for Internet calling, playing games, or relaxing with music.

Lightweight, behind-the-head style

Full-range stereo

Adjustable boom for precise positioning of the microphone

Noise-canceling microphone

Convenient, in-line controls

USB-enhanced digital sound quality.

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Plantronics .Audio 645 USB

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  • Tom M.
  • 1/26/2015 7:56:00 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggs

Pros: 1) Mic boom is very flexible and easy to position.
2) Sound quality is decent on both the mic and speakers
3) The in-line control seem more solidly attached to the cord then most headsets I've used.
4) Comes with detachable USB converter.

Cons: 1) After about 2.5 hrs they become uncomfortable to continue wearing.
2) In-line Volume control for the mic has 3 settings going up and 4 settings going down, unsure if it's meant to have {mute,low,high} or {mute,low,medium,high}.
3) Something rattling around in the left earpiece, has happened since received, rather annoyingly.

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  • Toby R.
  • 11/16/2014 2:36:28 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsBest Quality For Your Money.

Pros: Great microphone quality
Noise canceling while using third party applications is fantastic
Low price ($9.99 when I bought it)
USB sound card (Quality of mic and sound is guaranteed no matter what PC you have. Can also be used with other microphones and are usually worth $7-$15 alone)
Long cord at approximately 7-8 feet

Cons: Settings are limited.
May be uncomfortable to wear at first to some users

Other Thoughts: Definitely worth the price even it rises back up to $20

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  • Austin M.
  • 11/12/2014 8:39:31 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsGreat Sound, but uncomfortable

Pros: The sound quality is great and I get awesome sound from the microphone.

Cons: It isn't actually USB, it just has a USB adapter that the mic/headphones plug into, which means that the sound is analog (but the quality is still good)

The mic and headphone jack sticks way out (2~ inches) and if you want to use the adapter it sticks out another 2.

I have a big head, so when I wear this headset for more than 2-3 hours it starts to hurt my ears. If I wear my glasses while using these it hurts my ears after about and hour or two.

Other Thoughts: I use other headphones when I don't need a microphone and switch back and forth if my ears start to hurt from getting pinched, but I like my setup and if these break I would consider buying them again.

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  • Patricia F.
  • 9/12/2012 10:23:26 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsTerrible Quality

Pros: It worked out of the box.
Decent mic quality.

Cons: Bad wires, they ultimately resulted in my throwing the headset out because it wasn't worth repairing.

Also hurt the top of my ears, unconfortable with glasses or any kind of long-term usage. I taped on foam and it became bearable, but that shouldn't be necessary.

Other Thoughts: Go for an extra $15, get a $40 over-the-head mic and you'll be amazed in the step up in Quality(Build and Sound), Comfort and Durability.

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  • Arjan S.
  • 7/23/2010 2:30:08 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggs

Pros: * Good sound quality, cuts out a lot of the background noise
* Comfortable to wear, love the padding around the ears
* Behind the head
* Came with USB soundcard/adapter

Cons: * Cord is too short! Did not expect this when I bought it.
* Slightly large fit for me particularly

Other Thoughts: Plastic casing is a nuisance and bad for the environment. Why do companies still do this? Required a knife to open.

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  • Daniel S.
  • 6/30/2010 11:40:28 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsNot For Gaming

Pros: *Cheap.
*Great for infrequent use.

Cons: *Very painful to wear for gaming (that is, for a few hours or longer). Gaming with these headsets for a few days left very sore spots on the top of both ears that eventually formed blisters.
*Low-Quality. The first set I bought lost sound within 2 weeks (without any damage after I received it). The second pair had a faulty mic boom.
*Awkward Mic Boom. The mic boom is very long, extending nearly past the right side of my mouth (and I really have an average-sized head, if not bigger). Although it's easily adjusted up and down, its very hard to bend the mic boom.
*Very bulky & unneeded volume adjuster. Seriously, this thing is very big and weighs down the mic cord, I had to tape it to my desk it was getting annoying getting caught on things.

Other Thoughts: If you're not going to use them much and just want to pick up a quick pair, go ahead, but I wouldn't suggest these for anything more.

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  • Daniel S.
  • 5/16/2010 8:51:04 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

2 out of 5 eggsMeh

Pros: *Cheap
*Good Sound
*Quality Make

Cons: *Awkward headset shape that bothers the ears
*Leather padding makes you sweat during the summer
*Very long microphone
*Hurts after wearing for a couple of hours

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  • Daniel S.
  • 5/15/2010 11:25:10 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

4 out of 5 eggsPretty Good

Pros: *Cheap
*Good Sound
*Good Microphone Quality

Cons: *Awkwardly Long Microphone
*Leather cushioning is bothersome after a couple of hours of wearing
*Somewhat awkward shape, but you get used to it

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  • Anonymous
  • 4/7/2010 3:17:25 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsFirst Time For Me

Pros: I bought it for use with the ASUS N71JV-X1 The headset i like real well. I just wish it could work with my Gateway MT6729 Notebook. (maybe it is software related why it wont work) but i liked it for the Asus.

Cons: Ease of use for analog. the USB i did'nt expect a adaptor but to be honest it was the first one like this i bought. It wont work with my Gateway MT6729 Notebook. I wish it did.

Other Thoughts: I think on my rma'd asus when was on it caused lag. When i went to analog then that lag was gone.

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  • Laura B.
  • 3/28/2010 5:43:55 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

3 out of 5 eggsEh okay

Pros: Good sound quality, good for gaming, I wear glasses and have no problem wearing it. Really good for online gaming because of directional sound.

Cons: My usb that came with it, broke and then later only one headphone works and the mic no longer works. I believe i was too tough on it, I dropped it many times and it was thrown in a bottom of a box through 2 moves. BE GENTLE!!!! Take care of it and it will work fine.

Other Thoughts: Thinking about buying another pair now that the price is lower, first time around paid $50

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