et-8a (Etymotic)
Etymotic Research, the inventor of in-the-ear high-fidelity earphones, have now produced the ety8 Bluetooth Earphones, the industry's first and only in-the-ear wireless earphones.
The ety8 Bluetooth Earphones are also the only Bluetooth earphones with high-accuracy sound reproduction and full noise exclusion.
The new earphones are the smallest wearable stereo Bluetooth earphones, able to fit easily in a pocket or purse. Each earphone weighs less than half an ounce; one contains the battery and the other the circuit, antenna and controls. The ety8 Bluetooth Earphones, which work with iPod devices and other Bluetooth-enabled music players, are supported completely by the ear canal with no external support required for comfortable long-term use. A large selection of eartips is supplied to accommodate different ear sizes. As the first wireless in-the-ear earphones, the ety8 Bluetooth Earphones give users much more freedom of movement and flexibility in how they listen to their music players. For example, users can place their iPods in a pocket or armband or on a nearby desk or table and listen to music wirelessly and privately while exercising, traveling or moving about, without having to manage wires between the iPod and the earphones.
Smallest and first in-the-ear Bluetooth stereo earphones
The reason no one has previously introduced an in-the-ear Bluetooth earphone is that it's extremely difficult to achieve a small enough design that works effectively, said Mead C. Killion, Ph.D., founder and president of Etymotic Research and adjunct professor of audiology at Northwestern University. We were able to overcome the technological hurdles and to deliver Bluetooth without any compromises by applying our extensive expertise in miniaturized sound components and electronics and by taking advantage of newly developed components.
In particular, Etymotic took advantage of the following:
The earphones use the new low-power, full-bandwidth Broadcom BCM-2037 chip set, which represents a major advance in Bluetooth technology. The small size and low current drain of the Broadcom chip set helped Etymotic to reduce the size of its stereo Bluetooth earphones and minimize power consumption.
Etymotic was able to make its in-the-ear wireless earphones extremely small without sacrificing efficiency thanks to its patent-pending antenna design that folds to fit into the tiny earphone case without losing efficiency. Existing Bluetooth devices require much longer antennas and thus significantly larger packages.
The battery in the ety8 Bluetooth Earphones offers very high efficiency and lasts eight to 10 hours per charge.
Better sound brought to wireless operation
The ety8 Bluetooth Earphones also provide users with the highest fidelity Bluetooth listening experience, sampling the sound at 44.1 kHz sampling rate, 16-bit resolution.
ety8 Bluetooth earphones promote safe listening
In addition to being the first in-the-ear Bluetooth stereo earphones, the ety8 Earphones are also the first Bluetooth earphones to provide 35 dB to 40 dB noise exclusion. This level of noise exclusion drops the typical 80 dB airplane cabin noise level down to the 40-45 dB level of a typical living room, which greatly improves users ability to hear the sounds coming through the earphones. It is more than twice as effective as over-the ear headphones with electronic noise canceling circuitry and equals that of Etymotic's other earphones, known for their high degree of noise isolation.
Thanks to these noise-excluding capabilities, users of the ety8 Earphones do not feel the need to turn up the volume too high: Recent studies show that when outside noise is excluded, people tend to naturally choose a listening level safe for their ears
Technical Specifications
Transducer Type: Balanced armature
Frequency Response Accuracy: 50 Hz -6 kHz ± 3 dB; 20 Hz -15 kHz ± 6 dB
Noise Isolation: 35 dB with flanged eartip, deeply inserted
40 dB with foam eartip, deeply inserted
Max Output: 110 dB SPL
Weight: < 14 gms each earphone
Battery Life (iPod): 6-9 hours depending on the iPod model
Battery Life (non iPod): 7 to 10 hours depending on the connected BT device
Charging Time: 1 hour to 80% charge. 2-3 hours from empty battery to full charge
Range: >10 meters in free space
Body absorption: The body blocks transmission.
Use the music player on the same side of the body as the R earphone.
Volume Control Range (iPod): 50 dB
Volume Control Range (non-iPod): 40 dB
Total Harmonic Distortion: < 4% at 1 kHz at a nominal output of 100 dB SPL
Sampling Rate: 44.1 kHz, 16 bit resolution
Antenna: Internal
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