Amphony H2500 Manuals

Feature Transmitter: Digital audio transmission Transmit frequency Analog audio interface Analog audio interface level control Electrical digital audio interface Optical digital audio interface High-speed data port Battery charging bays Headphones: Digital audio reception Ear cushions Extended frequency response Model 1000 Yes 2.4 GHz Yes No No No Yes No Yes No Leather Model 2000 Yes 2.4 GHz Yes Yes Yes Yes Yes Yes Yes Yes Velours Feature comparison Amphony Digital Wireless Headphones R Model 2500 Yes 5.8 GHz Yes Yes Yes Yes Yes Yes Yes Yes Velours

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 ? 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. 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). 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. 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. 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. 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. Q: What is the difference between the Amphony 5.8 GHz Digital Wireless headphones and 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. © 2004 Amphony 1 R Frequently Asked Questions

R Product Information Model 2500 Model 2500 CD Quality 5.8 GHz Digital Wireless Headphones 5.8 GHz Digital Wireless Headphones The Model 2500 Digital Wireless Headphones from Amphony combine the best of headphone technology with the best of wireless audio transmission technology. As a result, this model achieves audiophile sound reproduction and eliminates any noise or audio distortion by using digital audio transmission. The Model 2500 offers an extended audio frequency response and excels at reproducing every subtle nuance of your favorite songs. The transmitter provides fully digital audio interfaces in order to eliminate any unnecessary digital-to-analog or analog-to-digital conversion and achieves unsurpassed signal-to-noise ratio. Main features: Digital audio transmission at full CD quality Extended headphone frequency response Digital audio interfaces Noise shaping filter Immune to interference at 2.4 GHz Battery charging bays Audio interface level control [ audiophile edition ] [ audiophile edition ] High-speed data port Analog audio interface Electrical digital interface Optical digital interface The audio data is transmitted to the headphones without applying any audio compression or sample rate conversion. Transmission at 5.8 GHz eliminates interference from other wireless devices at 2.4 GHz. The Model 2500 features velours ear cushions to maximize comfort as well as battery charging bays to keep your headphones working at any time.

R User and Installation Guide 5.8 GHz DIGITAL Wireless Headphones Model 2500