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Sennheiser
Sennheiser HD 450BT
Noise Isolation
4.7/ 10
Noise Isolation — measured in the SoundGuys lab.
Key specs
Battery Life Wireless
27 hBelow average27 h
11 h100 h
below average for over-ear headphones — based on 156 of 240 we've cataloged.
Charging Method
USB-CMost commonUsb-c88%Micro usb9%Others3%
Usb-c is the most common — on 88% of the 138 over-ear headphones we've cataloged (of 240).
Bluetooth Version
5Most common5.029%5.326%5.216%5.411%
5.0 is the most common — on 29% of the 147 over-ear headphones we've cataloged (of 240).
Connection Type
Most commonWired-3.5mm48%Bluetooth43%Wired-usb-c7%Others2%
Bluetooth is the most common — on 43% of the 240 over-ear headphones we've cataloged (of 240).
Battery
- Battery Life Wireless
- 27 h
- Charging Method
- USB-C
- Full Charge Minutes
- 120 min
- Battery Life Anc On
- 27 h
- Battery
- Yes
- Fast Charging
- No
Connectivity
- Bluetooth Version
- 5
- Connection Type
- Bluetooth, wired-3.5mm
- Bluetooth Codec
- SBC, AAC, aptX, aptX-HD
- Multipoint Devices
- 2 devices
- Headphone Jack
- Yes
- USB Charging
- Yes
Design
- Weight
- 238 g
- Color Options
- Black, white
- Foldable
- Yes
Build
- Material Chassis Primary
- Plastic
- Sweat Resistance
- No
- Water Resistance
- No
- Material Ear Cups
- Synthetic leather
Features
- Companion App
- IOS + Android
- Control Type
- Physical buttons
- Eq Customization
- Full parametric EQ
- Auto Pause
- No
- Voice Assistant Support
- Google Assistant, Siri
Microphone
- Count
- 2
- Microphone
- Yes
- Type
- Dual microphone
Sound
- Acoustic Design
- Closed-back
- Anc Modes
- Off,anc
- Driver Count
- 1
- Driver Type
- Dynamic driver
- Frequency Response
- 20-20000 Hz
- Frequency Response High Hz
- 20000 Hz
- Frequency Response Low Hz
- 20 Hz
- Frequency Response Signature
- Warm
- Noise Cancellation Type
- Active
SoundGuys review
Read the full review ›SOUNDGUYS rating
7.2/ 10
RecommendedLK
Reviewed byLil KatzReviewed July 2025Isolation4.7
Battery life9.5
Comfort & fit7.0
Connectivity8.0
Design7.3
Portability7.5
The verdict
The Sennheiser HD 450BT is a very good pair of headphones for the price with great sound quality and exceptional battery life. However, the uncomfortable fit due to small ear cups and lack of advanced controls limit its appeal. While noise canceling is adequate, the Sennheiser PXC 550-II offers better overall performance for a modest price increase.
✓What we like
✓Excellent sound quality with balanced bass and midrange emphasis
✓Exceptional battery life of approximately 27-30 hours with ANC enabled
✓Bluetooth 5.0 with support for multiple codecs including aptX Low Latency
✓Portable design with removable and replaceable ear pads
✓USB-C charging port
✓Adequate noise canceling for mid-range price point
✕What could be better
✕Uncomfortable fit with small ear cups that don't accommodate larger ears
✕Initial clamping force causes headband hotspot
✕Poor and confusing button layout requiring learning curve
✕No fast charging despite USB-C port
✕Passive isolation significantly less effective than active noise canceling
✕Issues with Bluetooth multipoint connection and secondary device notifications
Features & Opinions
More from the team ›Commentary and deep dives from the SoundGuys editorial team.
3 headphones I would buy instead of the AirPods Max 2These premium headphones deliver class-leading ANC, longer battery life, and more flexibility for less money.
Dave CarrVideo Producer/WriterThe end of budget audio's best bargain: RIP HD 6XXIt was one hell of a run.
Christian ThomasEditor-at-largeWired vs wireless headphones: Which should you buy?Wired headphones do not automatically sound better.
Tom TriggsContributorThe 5 best headphones to look forward to in 2026Strap in — we're in for a wild year.Tom TriggsContributorDon't buy wireless headphones without USB audioIt's way past time.Christian ThomasEditor-at-largeI've reviewed headphones for over a decade: Here are 5 things I wish they did differentlyHeadphone companies: help me help youChristian ThomasEditor-at-large5 ways headphones are going to change in 2027Here's where things are headed.Christian ThomasEditor-at-large
Dave CarrVideo Producer/WriterThe end of budget audio's best bargain: RIP HD 6XXIt was one hell of a run.Christian ThomasEditor-at-largeWired vs wireless headphones: Which should you buy?Wired headphones do not automatically sound better.Tom TriggsContributorThe 5 best headphones to look forward to in 2026Strap in — we're in for a wild year.Tom TriggsContributorDon't buy wireless headphones without USB audioIt's way past time.Christian ThomasEditor-at-largeI've reviewed headphones for over a decade: Here are 5 things I wish they did differentlyHeadphone companies: help me help youChristian ThomasEditor-at-large5 ways headphones are going to change in 2027Here's where things are headed.Christian ThomasEditor-at-largeMore Over-Ear Headphones
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