Koss CS340BT QZ Wireless Noise Cancelling Headphones: The Top Pick for Wireless Listening

Published on Dec. 18, 2023, 4:36 p.m.

With so many options for wireless headphones these days, it can be tough to choose the right pair. In this review, we’ll take an in-depth look at the Koss CS340BT QZ Wireless Headphones to see if they should make it to the top of your list.


The Koss CS340BT QZ Wireless Headset stands out with its combination of wireless connectivity, active noise cancellation, sleek design, and excellent sound quality. Some key features include:

  • Bluetooth 5.0 wireless connectivity
  • Active noise cancellation to block ambient sounds
  • Dual-microphone CVC 8.0 for crystal clear calls
  • Up to 30 hours of battery life per charge
  • Premium design with leatherette cushions

 Koss CS340BT QZ Wireless Headset

Appealing Design

Finished in an understated matte gray, the streamlined aesthetics of the Koss CS340BT QZ Wireless Headset exude refined style. The soft leatherette headband and on-ear cups provide a comfortable fit while also giving the headphones a premium look and feel. Koss strikingly balances function and fashion with this design.

Incredible Selling Points

Two key features make the Koss wireless headphones stand out from the crowd - active noise cancellation and extended battery life. The ANC effectively eliminates ambient noise, creating the perfect environment for immersive listening. Meanwhile, the long-lasting battery keeps your tunes playing for up to 30 hours between charges.

Easy to Use

On-board controls on the Koss CS340BT QZ Wireless Headset allow for handy management of volume, tracks, calls, and ANC mode. Instead of fussing with connected devices, just hit the appropriate button right on the ear cup. Bluetooth pairing also only takes a moment. Overall, a very intuitive experience.
 Koss CS340BT QZ Wireless Headset

Superb Sound Quality

Outfitted with 36mm drivers and a 20Hz to 20kHz frequency response, the Koss headphones deliver dynamic audio with deep bass and sparkling highs. The headphones play loud when needed with a 94dB sensitivity, while still maintaining clear details. Expect pure musical enjoyment.

Crystal Clear Calls

Thanks to the dual-microphone array with CVC 8.0 noise reduction, your voice comes through loud and clear on calls. The mics effectively cut out background noise for natural conversations free of disruption. No more asking callers to repeat themselves.

Next-Level Noise Cancellation

The ANC feature on the Koss CS340BT QZ Wireless Headset uses advanced digital signal processing to continuously monitor ambient noise and cancel it out. This creates an optimal quiet environment so you can focus entirely on your music or calls without distraction.
 Koss CS340BT QZ Wireless Headset

Generous Battery Life

The long-lasting rechargeable battery provides up to 30 hours of playtime. Even with ANC enabled, you still get 22 hours of use. The USB-C charging port offers quick and convenient recharging when needed.

Wireless Connectivity

Bluetooth 5.0 gives you cable-free convenience and a stable connection. Easily pair your smartphone, tablet, laptop or other Bluetooth-enabled devices from up to 30+ feet away. A 3.5mm audio cable is also included for wired listening if desired.

Premium Materials

The steel sliders, aluminum forks, PU leather, and lambskin leatherette used in the construction ensure durability along with luxury appeal. Sweat and moisture also pose no problems thanks to the waterproof materials.

 Koss CS340BT QZ Wireless Headset


Koss - Founded in 1958, Koss is an American audio brand known for high-quality headphones and speakers. They developed the world’s first SP/3 stereophone over 60 years ago.

Use Cases:

The Koss CS340BT QZ headphones are ideal for people who want an immersive listening experience free from ambient noise distractions. They are great for working remotely, commuting, traveling, or just enjoying music peacefully at home. The active noise cancellation makes them especially useful in noisy environments.

User Feedback Analysis:

Overall, customers seem quite pleased with the performance and value of the Koss CS340BT QZ wireless noise cancelling headphones. Here are some commonly mentioned pros and cons based on customer reviews:


  • Superb audio quality: Many users describe the sound as “amazing,” “clean” and “well-balanced,” with punchy bass that doesn’t overpower. The expansive frequency range makes music really come alive.

  • Effective noise cancellation: Customers say the ANC does an impressive job blocking out ambient noise like traffic, chatter and airplane engines. This allows for undistracted listening.

  • Comfortable fit: The plush leatherette cushions and adjustable headband provide a comfy on-ear fit suitable for extended wear. Some note the headphones stay in place without clamping too tight.

  • Convenient controls: Users like having the tactile buttons right on the ear cups to control volume, tracks, ANC mode, calls etc. This on-board control eliminates the need to fumble with devices.

  • Long battery life: Many customers are thrilled with the extremely long 30-hour battery life per charge. Even with ANC on, 22 hours is longer than most competitors.


  • Power button issues: A common complaint is difficulty locating the power button by feel which leads to accidentally hitting the volume buttons instead.

  • On-ear discomfort: While initially comfortable, some mention the on-ear design causes ear soreness during longer listening sessions. More breathable cushions could help.

  • Noise cancellation reduces battery: Users note that enabling ANC chops the battery life roughly by 25%, which is expected. But the battery still outlasts most rivals.


Overall, users agree the Koss CS340BT QZ Wireless Headset punches way above its weight given the sub-$150 price tag. The combination of stellar sound, effective noise cancellation, and marathon battery life in a sleek package make these headphones a winning choice.


  • Great sound quality with bass-rich audio
  • Active noise cancellation works very well
  • Long battery life up to 30 hours
  • Bluetooth 5.0 provides stable wireless connection
  • Premium design and comfortable fit


  • On-ear design can cause discomfort over time
  • Power button is difficult to locate by feel
  • Noise cancellation reduces battery life


For under $150, the Koss CS340BT QZ headphones offer tremendous value. The combination of wireless connectivity, noise cancellation, and excellent audio is unbeatable at this price point. These feel and perform like premium headphones.
 Koss CS340BT QZ Wireless Headset


With premium sound, sleek looks, and cutting-edge features like active noise cancellation and Bluetooth 5.0, the Koss CS340BT QZ Wireless Headphones are a top-notch choice for wireless listening on the go.


  • Connectivity: Bluetooth 5.0
  • Microphone: Dual-microphone with CVC 8.0 noise reduction
  • Noise Control: Active noise cancellation
  • Battery Life: Up to 30 hours (22 hours with ANC)
  • Audio: 20Hz-20kHz frequency response, 36 ohms impedance, 94dB sensitivity
  • Weight: 1.4 pounds

Box Contains:

  • Koss CS340BT QZ Headphones
  • USB-C Charging Cable
  • 3.5mm Audio Cable

How to Use:

  • Press and hold the power button for 3 seconds to turn the headphones on or off.
  • Use the volume buttons to adjust the volume up or down.
  • Toggle the ANC button to turn active noise cancellation on or off.
  • Pair the headphones by putting them in Bluetooth pairing mode. Select “Koss CS340BT QZ” from the list of available devices on your phone or computer.
  • Plug in the 3.5mm audio cable for wired use when the battery is low.
  • Charge the headphones by connecting the USB-C cable to a power source. The LED light displays charging status.