Информационное Руководство для Amphony h2500
5.8 GHz DIGITAL Wireless Headphones, Model 2500
Q: What is the difference between the Amphony 5.8 GHz Digital Wireless headphones and
current 900 MHz wireless headphones ?
current 900 MHz wireless headphones ?
A: The main difference is how the audio signal travels from the transmitter to your headphones.
Almost all of the current wireless systems on the market use a method called FM (Frequency
modulation) which is very similar to the operation of your FM radio. The major drawback ist that this
type of modulation is ‘analog’ which is the reason for the poor performance of 900 MHz analog
headphones.
Almost all of the current wireless systems on the market use a method called FM (Frequency
modulation) which is very similar to the operation of your FM radio. The major drawback ist that this
type of modulation is ‘analog’ which is the reason for the poor performance of 900 MHz analog
headphones.
If you listen carefully to a CD over 900 MHz analog wireless headphones, you will notice significant
noise/static, low signal dynamics and low channel separation. Also, the signal quality will vary when
you move around the room (the noise will increase locally and also the further you move away from
the transmitter).
noise/static, low signal dynamics and low channel separation. Also, the signal quality will vary when
you move around the room (the noise will increase locally and also the further you move away from
the transmitter).
Our headphones use something which is called ‚digital' modulation. The same way music is
recorded on a CD using 1's and 0's, it is transmitted as 1's and 0's to the headphones. The result of
this technology is that there is no audio quality degradation during transmission, i.e. you will hear
the exact same audio quality as you would with corded headphones.
recorded on a CD using 1's and 0's, it is transmitted as 1's and 0's to the headphones. The result of
this technology is that there is no audio quality degradation during transmission, i.e. you will hear
the exact same audio quality as you would with corded headphones.
Because of this digital technology, these headphones are very suitable for high-quality audio, such
as music coming from a CD, DVD, digital satellite receiver etc.
as music coming from a CD, DVD, digital satellite receiver etc.
Q: Can these digital headphones also be used for my analog television or receiver ?
A: Yes. In addition to two digital audio interfaces, the transmitter also has an analog audio interface
which connects to the standard line output of your analog television or receiver. The analog audio is
converted to a digital signal inside the transmitter and then transmitted digitally to your headphones.
which connects to the standard line output of your analog television or receiver. The analog audio is
converted to a digital signal inside the transmitter and then transmitted digitally to your headphones.
Please note that even though there is no audio degradation during transmission to your head-
phones, you will hear noise if the analog input signal is already noisy. This is often the case for
analog audio sources.
phones, you will hear noise if the analog input signal is already noisy. This is often the case for
analog audio sources.
Q: What is the difference between the Amphony 5.8 GHz Digital Wireless headphones and
Amphony 2.4 GHz Digital Wireless headphones ?
Amphony 2.4 GHz Digital Wireless headphones ?
A: Amphony 5.8 GHz Digital Wireless headphones operate at a higher transmitter frequency than
the 2.4 GHz Wireless headphones and are recommended for situations where other 2.4 GHz
appliances, such as cordless telephones or wireless networks, may cause interference.
the 2.4 GHz Wireless headphones and are recommended for situations where other 2.4 GHz
appliances, such as cordless telephones or wireless networks, may cause interference.
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Frequently Asked Questions