Coaxial Digital
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 New Oyaide SL75R 10m Coaxial Digital Cable free shipping  US $175.75
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 Oyaide SL75R 10m Coaxial Digital Cable US $175.75
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 New Audio Technica AT SD2000 13m Coaxial Digital Cable free shipping US $175.00
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 sweetcome spdif coaxial digital audio cable 05 meter US $100.00
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 Canare LV 77S Pro Coaxial Digital Audio SPDIF Cable 16m US $89.76
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 HIFI Choseal TA 5201 Digital Coaxial Cable 15m US $88.80
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 Canare LV 77S Pro Coaxial Digital Audio SPDIF Cable 15m US $85.90
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 Canare LV 77S Pro Coaxial Digital Audio Cable CEA 15m US $85.90
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 Canare LV 77S Pro Coaxial Digital Audio Cable CEA 14m US $82.04
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 All In 1 Digital Optical Coaxial Stereo Audio Converter US $82.00
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Digital Wireless Headphones Review - The Latest Trend In Wireless Technology?
Not disturbing others while watching TV at night is likely still the main use of wireless headphones. Wireless headphones in particular are enjoying a high popularity by not being tied to a cord. Traditional wireless headphones could however never match corded headphones in terms of sound quality and realiability. The main culprit would be the wireless transmission itself which would be prone to noise and interference. New advances in wireless technology promise to remedy these drawbacks. We will review two models of wireless headphones which utilize the latest transmission technology to find out how these products compare to traditional corded headphones.
We will review the Sennheiser RS180 and the Amphony Model 2500 both of which use digital audio transmission. In other words the headphone transmitter will convert the audio signal into digital data which is transmitted to the digital wireless headphones. The headphones then convert this data back to audio. Using this transmission technology, none of these headphones showed the static or distortion that we have gotten used to from previous wireless headphones. Both of these models claim to transmit true CD quality audio.
The first thing we noticed is that the Sennheiser headphones are designed as open headphones which means that sound from the headphone transducers will penetrate to the outside of the headphones while the Amphony model is closed. There is no way to state that any particular design is better of the other and as such it is a matter of personal preference. A closed design, such as the Amphony, will reduce the sound level heard by others which is good when listening at loud volume without bothering others. At the same time, a closed design will tend to attenuate exterior noise more. Both headphones have comfortable velours ear cushions and fit snugly on the head.
The RS180 transmitter acts as a support base for the headphones. When not in use, the headphones can be suspended from the transmitter. The transmitter offer an analog audio input, yet no digital inputs. The Amphony 2500 transmitter offers analog inputs, one coxial digital and one optical digital input. As such the Model 2500 transmitter can connect to newer plasma TVs, most of which no longer have analog audio outputs. The Model 2500 transmitter will automatically recognize whether there is a digital signal present and switch to the corresponding input.
Judging the sound quality of both models, the sound of the RS180 is on the light side with good mid range but a little low on bass. As such we feel the RS180 is suited for listening to vocals and light music. The bass response of the Model 2500 is more pronounced than the RS180 but still well balanced and not overly aggressive in any way. The wireless transmission itself no longer suffers from the drawbacks of previous generation models and the sound quality of both models rivals the quality of corded headphones. One limitation though is since wireless models are battery powered, they will never be able to achieve the same loudness as corded headphones hooked up to a good headphone amp. Having said that, both models achieve plenty of volume though, the Model 2500 more so than the RS180.
The RS180 broadcasts it’s signal at the 2.4 GHz frequency. It supports up to four headphones per transmitter. The Model 2500 works at 5.8 GHz and supports an unlimited number of headphones. The range of the RS180 is specified at 300 ft by Sennheiser. In our testing, we were able to get a clean signal up to around 100 ft with both models in an indoor environment. This should be plenty for most users. The Model 2500 transmitter has an output that supports secondary transmitters (RangeBoosters) to further extend the operating range.
The RS180 offers a battery life of 15 hours. The Model 2500 will work around 30 hours per charge. Pricing is around $300 for the RS180 wireless headphones and $200 for the Model 2500.
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NuForce releases Dia digital amplifier (cnet)
The California-based company attempts to bring hi-fi sound to the masses with
its affordable new amplifier. (Credit: NuForce)NuForce, a California-based
company that specializes in digital amplifiers, has recently released an
amplifier targeted at home A/V buffs who want a simple, no-frills approach to
2.1-channel audio.The NuForce Dia is rated to deliver 24W (RMS, at 4 Ohm) per
channel to a pair of stereo speakers with a line-out to connect an additional
powered subwoofer. The device has a basic design--like a larger version of the
Icon for desktops--and includes three digital inputs at the back: One coaxial
and two optical. Unlike the company's Icon range of amplifiers, however, the
Dia comes with a remote control which allows users to adjust the volume and
switch inputs. While the company does make higher-end stereo and multi-channel
amplifiers for more serious listeners, we think the Dia provides a great way
for budding audiophiles to dip their toes in the hi-fi world.The Dia is
available now and has been priced at US$299 in the US. NuForce products are
also sold through international resellers and Amazon.com.Via Canada Hi-Fi
Digital to Analog Audio Converter Optical / Coaxial / USB
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