Has Active Noise Cancellation (Anc)
Focal Bathys
✓
Sennheiser HD 660S2 ✗
Active noise cancellation uses more advanced technology to actively counter noise. How it works, it detects and analyzes the sound pattern of incoming noise and then generates a mirror signal 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 0 hence "diluting" the noise.
Focal Bathys 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.
Has Passive Noise Reduction
Focal Bathys
✓
Sennheiser HD 660S2 ✓
Passive Noise Cancellation uses well-designed ear cups to seal out environment noise. This is used for both in-ear earphones and over-ear headphones where the headphone itself will keep surrounding noise out.
The Sennheiser HD 660S2 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 Focal Bathys isolates you from ambient noise instead of actively using technology to cancel it out.
Lowest Frequency
Focal Bathys
15Hz
Sennheiser HD 660S2 8Hz
Low-frequency response measures if and how well a particular audio component reproduces low audible frequencies and if it makes any changes to the signal while at it. Sennheiser HD 660S2's lowest frequency is at 8Hz, the lower the low-frequency response, the stronger and juicier the bass.
Focal Bathys's lowest frequency is at 15Hz, this means that
Focal Bathys got a juicier bass than the Sennheiser HD 660S2
Highest Frequency
Focal Bathys
22000Hz
Sennheiser HD 660S2 41500Hz
High frequency response measures if and how well a particular audio device reproduces high audible frequencies and if it makes any changes to the signal while at it. Sennheiser HD 660S2's highest frequency is at 41500Hz, the higher the high-frequency response, the clearer and crispier the treble.
Focal Bathys's highest frequency is at 22000Hz, this means that
Sennheiser HD 660S2 got a clearer and crispier treble than the Focal Bathys
Sound Pressure Level
Focal Bathys
✗
Sennheiser HD 660S2 104dB/mW
Sound pressure is the average variation in atmospheric pressure caused by the sound, the sound level .i.e how loud something is can be perceived differently by different people so we need to have a way of getting an objective measurement of sound level expressed in numerical terms.
The sound pressure level, SPL, is the pressure level of a sound, measured in decibels, dB, Sennheiser HD 660S2's measurement is 104dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Driver Unit Size
Focal Bathys
40mm
Sennheiser HD 660S2 38mm
The driver unit is basically a mini speaker that produces sound in the device, its size dictates the loudness of the headphone. Sennheiser HD 660S2 driver unit is 38mm in diameter, bigger drivers are more powerful and can produce better bass.
Focal Bathys driver unit is 40mm in diameter,
making them have a larger driver unit than that of Sennheiser HD 660S2 by 2mm
, 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 yeah, larger drivers are capable of generating louder sound, but this does not mean that they produce better sound.
Impedance
Focal Bathys
✗
Sennheiser HD 660S2 300Ohms
Impedance is the device's resistance to the electromagnetic current, as electricity flows through a wire, it faces electrical resistance that counters the flow of current. The resistance of a wire is measured in ohms. Sennheiser HD 660S2's impedance is 300Ohms, the lower the impedance, the easier it is to get higher volume and requires less power.
Has A Neodymium Magnet
Focal Bathys
✓
Sennheiser HD 660S2 ✗
Neodymium magnets if used in audio devices produce a higher sensitivity and substantial sound output while using less power. They can help produce music at quite a high sound pressure level, SPL, with the use of high magnetic flux. The Focal Bathys have this type of magnet.
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