Has Passive Noise Reduction
OneOdio Studio Wireless C
✓
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 OneOdio Studio Wireless C isolates you from ambient noise instead of actively using technology to cancel it out.
Lowest Frequency
OneOdio Studio Wireless C
✗
Sennheiser HD 660S2 8Hz
Low-frequency response measures if and how well an audio component reproduces low audible frequencies and if it makes any changes to the signal on the way through. Sennheiser HD 660S2's lowest frequency is at 8Hz, the lower the low-frequency response, the stronger and juicier the bass.
Highest Frequency
OneOdio Studio Wireless C
✗
Sennheiser HD 660S2 41500Hz
High frequency response measures if and how well an audio device reproduces high audible frequencies and if it makes any changes to the signal on the way through. Sennheiser HD 660S2's highest frequency is at 41500Hz, the higher the high-frequency response, the clearer and crispier the treble.
Sound Pressure Level
OneOdio Studio Wireless C
110dB/mW
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 the means to get 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.
OneOdio Studio Wireless C's sound pressure level measurement is 110dB/mW.
Driver Unit Size
OneOdio Studio Wireless C
50mm
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.
OneOdio Studio Wireless C driver unit is 50mm in diameter,
making them have a larger driver unit than that of Sennheiser HD 660S2 by 12mm
, 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 it's true that, larger drivers are capable of generating louder sound, but this does not mean that they produce better sound.
Impedance
OneOdio Studio Wireless C
32Ohms
Sennheiser HD 660S2 300Ohms
Defined as the device's resistance to the electromagnetic current, as electricity flows through a conductor, 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.
OneOdio Studio Wireless C's impedance is 32Ohms. The impedance of earbuds is the electrical resistance of the driver unit present on the inside.
Has A Neodymium Magnet
OneOdio Studio Wireless C
✓
Sennheiser HD 660S2 ✗
Neodymium magnets when used in audio devices produce a higher sensitivity and substantial sound output using less power to do so. They can help produce music at quite a high sound pressure level, SPL, with the use of high magnetic flux. The OneOdio Studio Wireless C have this type of magnet.
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