Has Active Noise Cancellation (Anc)
Bowers & Wilkins PX7 S2
✓
Shure Aonic 40 ✓
Active noise cancellation uses more advanced technology to reduce unwanted ambient sounds. How it works, it listens to the sound pattern of incoming noise and then inverts the soundwaves to cancel it out. In simple terms, it's like taking +1 outside (noise from your surrounding) and adding -1 inside (counter sound within the device) to make zero resulting in a reduced level of noise.
Shure Aonic 40 allow you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise.
Bowers & Wilkins PX7 S2 too have active noise cancellation making both devices ideal for plane rides and morning commutes. Each may work with different noise cancellation modes, pick the setting, mode, or noise cancellation type that suits your commute or that enhances your relaxation time.
Has Passive Noise Reduction
Bowers & Wilkins PX7 S2
✓
Shure Aonic 40 ✓
Passive Noise Cancellation uses well-designed ear cups to seal out unwanted noise. This is used for both in-ear earphones and over-ear headphones where the headphone itself will keep surrounding noise out.
The Shure Aonic 40 sits tightly in place, creating an acoustic seal that reduces background noise and prevents your music from leaking out.
Both of these devices have passive noise reduction which means that also the Bowers & Wilkins PX7 S2 isolates you from ambient noise instead of actively using technology to cancel it out.
Lowest Frequency
Bowers & Wilkins PX7 S2
✗
Shure Aonic 40 20Hz
Low-frequency response measures if and how well a particular audio device reproduces low audible frequencies and if it makes any changes to the signal on the way through. Shure Aonic 40's lowest frequency is at 20Hz, the lower the low-frequency response, the stronger and juicier the bass.
Highest Frequency
Bowers & Wilkins PX7 S2
✗
Shure Aonic 40 20000Hz
High frequency response measures if and how well an audio device reproduces high audible frequencies and if it makes any changes to the signal while at it. Shure Aonic 40's highest frequency is at 20000Hz, the higher the high-frequency response, the clearer and crispier the treble.
Driver Unit Size
Bowers & Wilkins PX7 S2
40mm
Shure Aonic 40 40mm
The driver unit is basically a mini speaker that produces sound in the device, its size dictates the loudness of the headphone. Shure Aonic 40 driver unit is 40mm in diameter, bigger drivers are more powerful and can produce better bass.
Bowers & Wilkins PX7 S2 driver unit is 40mm in diameter,
making both Bowers & Wilkins PX7 S2, and Shure Aonic 40 similar in how loud their sound gets
, as many tend to believe that driver units of a bigger size automatically produce better sound quality.
However, large drivers usually have difficulty reproducing high frequencies so yes, larger drivers are capable of generating louder sound, but this does not mean that they deliver better sound.
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