What Are 900 MHz Wireless Headphones?

The wireless earphones are replaced by radio waves in the middle. They are connected from the computer's audio outlet to the transmitter, and then the transmitter sends the radio waves to the receiver's headphones. The receiver is equivalent to a radio.

Wireless Headphones

The wireless headset is the middle cord

Compared with wired headphones, wireless headphones

According to the electromagnetic wave frequency used by wireless headphones, they can be divided into:

Infrared (30um ~ 3mm10GHz ~ 1000GHz) wireless headphones

Mibo (Mibo 10 ~ 1m VHF 30MHz ~ 300MHz) wireless headphones

Decimeter Wave (Decimeter Wave 1m ~ 0.1m Ultra High Frequency (UHF) 300MHz ~ 3000MHz) Wireless Headphones

First, infrared wireless headphones

Pros: At present, the technology is quite mature

Disadvantages: 1. The working distance is within 7 meters; 2. Poor diffraction, if there are obvious obstacles between the infrared wireless headset and the transmitter (for example: people, large pets), then the infrared headset may be interrupted. .

Second, Mibo wireless headphones ("FM FM headphones")

Advantages: 1. In theory, N receivers in the working range can listen at the same time, one-to-many "wireless audio broadcasting system; 2. The signal is highly diffractive; 3. The use distance is nominally 10 meters to 70 meters between.

Disadvantages: 1. Virtual standard working distance; 2. Large noise interference; 3. Unstable signal reception.

Third, decimeter wireless headphones (Bluetooth)

Advantages: 1. Working distance (100 meters), more free working space; 2. Good music playback effect; 3. Better confidentiality of communication; 4. Better sound quality; 5. More energy saving; 6. Lower cost .

1, with wireless transmission, wireless monitoring, wireless voice chat and other functions;

Transmitter section: Transmitting frequency: 81.5 ± 0.5MHz or 82.5 ± 0.5MHz Modulation method: Frequency modulation (FM) Transmission distance 8M Power supply: Battery can be connected to TV, audio, VCD, DVD, multimedia computer, etc. device. Receiver part: Frequency coverage: 76-86MHz ± 1MHz Receiving method: Frequency modulation (FM) distortion rate 2% Receiving distance: 30 meters (open ground).

1. Turn the transmitter power switch to the wireless headset position, and the power indicator is on. (If the TV is turned off).

2. Press the remote control headset button light is on, press the reset button for 1 second and release 3. Press the search button for 1 second and release, wait for 3-5 seconds to receive the sound from the transmitter; otherwise repeat step

3. Be sure to pay attention to the use process: insert the microphone output plug into the computer MIC port, wireless voice chat within two meters from the microphone. Computer, TV, DVD volume affects the volume and sound quality of the receiving headset.

Four top HIFI brands in Europe

AKG:

AKG headphones

It is called "love technology" in China. A famous Austrian manufacturer of headphones and microphones, founded in Vienna in 1947. AKG's headphones are lightweight, sturdy and comfortable, with smooth and natural sound, beautiful midrange and charming sound, and wide sound field. Its classic products include the K141 series, K240 series, K270 series, HIFI headphones K701, K702, K1000, and wireless surround sound headphones HEARO999, which have extremely high reputation in the professional field. AKG has now been acquired by Harman Kardon Group.

BEYERDYNAMIC: Domestically called "Bayer Power" or "Bayer Power". A famous German manufacturer of headphones and microphones, founded in Berlin in 1924. Beyerdynamic headphones are sturdy and comfortable, the sound is faithful and rigorous, warm, and the details are clear. Its classic products include the world's first dynamic headphones DT48, professional headphones DT880, DT990, T1, HIFI headphones DT831, DT931 and so on.

SENNHEISER: It is called "Senheiser" in China, and it is reported that it is now called "Shenghai". Germany's famous manufacturer of headphones and microphones, founded in 1945. Sennheiser's traditional style is thick and open, loyal, sweet and relaxed. In recent years, Sennheiser's product style has begun to turn bright. Its classic products include professional headphones HD540, HD560, HD580, HD250, HD25, HIFI headphones HD595, HD600, HD650, HD800, electrostatic headphone system ORPHEUS and so on.

ULTRASONE: The owner of the "Extreme" company in China has researched headphones for more than ten years. The products are mainly medium and high-end professional headphones and HIFI headphones. The sound has the rigorous characteristics of German headphones, takes into account a good sense of music, and has high quality . Its famous models are ED7, ED8, ED9.

The two largest headphone brands in the U.S.

GRADO: It is called "Goethe" in China. GRADO is the world famous HI-END headphone brand. This is a small American family factory. It was founded in Brooklyn in 1955. The appearance of GRADO is simple and simple, the sound is dynamic, the mid-range is gorgeous and thorough, and the low-frequency is powerful. Its classic products are HP1000, SR60, SR325, RS1 and so on. At present, the full range of products other than SR40 is recommended on the market.

KOSS: It is called "Gauss" in China. KOSS is a large-scale headphone supplier in the United States, established in 1953. KOSS products mainly take care of the mid-to-low-end civilian market, and the sound is dynamic and dynamic. Its classic products include professional headphones PRO4, HIFI headphones KSC35, A250, electrostatic headphones ESP950 and so on.

Japan's top three headphone brands

AUDIO-TECHNICA: It is called "iron triangle" in China. Japan's well-known professional audio equipment manufacturer, its headphone products are the most famous high-end HIFI headphones, in the professional field also has 910, M40SF and other well-known products. Its products are easy to drive, avant-garde, well-crafted, comfortable to wear, and warm and clear. At present, products worthy of recommendation on the market include the Art Monitor A series, Air Dynamic AD series and flagship wooden shell headphones W series.

SONY: As a video giant, SONY does not need any extra introduction. SONY's earbuds are world-renowned. Its earphone products include classic professional headphones MDR7506, CD900ST, HIFI headphones MDR V6, MDR V600, MDR V700DJ, MDR CD1700, MDR CD3000, MDR R10 and so on. Currently recommended headset products are MDR CD2000, MDR CD3000.

DENON: Denon headphones. DENON is a trademark of the Japanese Columbia Corporation. DENON was originally a small electrical appliance manufacturing company established in 1939. It produces tapes and other products for companies such as NHK. The name was abbreviated from Denki Onkyo "famous. Acquired by Japanese Columbia Corporation in 1947. Now merged with Marantz to form Tianlong Marantz Group. DENON is famous for its pure and fashionable high-quality products, and most importantly its proven patented technology and craftsmanship. As a manufacturer of audio and video equipment, DENON is highly skilled and committed to producing the most advanced audio and video equipment. The highest model of DENON headphones is AH-D7100. Tianlong Marantz's wholly-owned subsidiary in China is Shanghai Electronic Music Marantz.

Other headset brands

Edifier: Edifier. Is a domestic company, its products have been widely recognized by the masses. Its quality is excellent and the price is moderate. Products include speakers, headphones, car audio, professional audio, musical instrument audio, Hi-Fi audio and other products. Various products can compete with well-known international manufacturers. It acquired the Japanese classic manufacturer STAX: the world's most prestigious and influential manufacturer of electrostatic headphones, known as half of the HI-END brand in Japan, was established in 1938. STAX's electrostatic headphones are reasonably priced, light and soft, rich in elegant beauty, and rich in detail. STAX's product line is not long, and all products are recommended.

headset

ALESSANDRO: It is called "Alice" in China. This is also an American company. Its products are designed and manufactured by GARDO. Its appearance is the same as GRADO and its sound is more faithful than GRADO. At present its products have three models, M1, M2 and MPRO, all of which are worth recommending.

ATA: This is a Chinese company headquartered in Hong Kong. Its products are mainly low-end multimedia headsets and HIFI headsets. This brand is not well known in the country. Its more famous products are its ITETEC OEM ELITE840 and other headsets.

ECCI [2]: Domestically called "zombie headset". A well-known manufacturer of music fever equipment in China. It was founded in 2007 by Mr. Zombie, a well-known tuner and amp designer. Friends who like headphones, especially those who pay attention to portable headphones, must be no strangers to "zombies". The famous "PR" series headphones come from the hands of "zombies".

ERGO: This is a small HI-END factory in Switzerland. Currently they have three earphones ERGO 1, ERGO 2 and ERGO AMT. The former two are traditional dynamic earphones and the latter use HELI speakers. ERGO's headphones have a unique shape, a thin and transparent sound, rich details, and have their own unique charm. Earlier this year, the company used the Jecklin Float trademark to launch two dynamic earphones and one electrostatic earphone, which also has a high reputation.

ETYMOTIC: It is called "Etymotic" in China. A small company in the United States mainly focuses on hearing aids and HI-END earplugs. Its ER4 series earbuds are classic products in high-end earbuds. Its sound is faithful and unimpaired.

PHILIPS: PHILIPS has a lot of headphone products, and the grades are relatively complete. Recently, the high-end headphones SBC HP890 and SBC HP910 launched by PHILIPS have been recognized by players.

MB QUART: An old German audio manufacturer. It is called "Goethe" in the country. In order to distinguish it from the American GRADO, it is also called "German Goethe". Its headphone products are mainly high-end HIFI headphones and professional headphones, with good craftsmanship and comfortable wearing. Adhering to the characteristics of rigorous and faithful German audio products and high analysis power, QP400, QP200, QP160 are recommended models.

PRO2: Domestically known as "Baolu", this is a Taiwanese earphone brand registered in Germany. It mainly sells mid-to-low price earphones. In the early years, PH580, PH560, PH1000, etc. have a certain popularity. Great, PH U585 is the representative of its new product.

SoundMAGIC: It is called "Sound Beauty" or "Sound Beauty Technology" in China. Founded by Tony Xu in 2005, it is committed to providing consumers with professional cost-effective professional electro-acoustic products; the products have been recognized by consumers for their classic design and cost-effectiveness; their PL11 and PL50 have been awarded by the British magazine Stuff , What HiFi 5 stars evaluation; It is one of the few domestic manufacturers that sells its own brand overseas and has its own sales network; in 2011, it launched 4 new products with different characteristics, E10, E30, P30, EH11, welcomed by the market.

Lingxiu headphones

DGSHOW: a domestic wireless earphone brand, founded in early 2008, operated by Shenzhen Lingxiu Technology Co., Ltd. Committed to the development and research of card speakers, Bluetooth speakers, wireless headphones, wired colorful subwoofer headphones and other products. To promote the process of socialization of life, to deliver open, shared and integrated products, to change people's lifestyle little by little, to meet the unique needs of different people, to make your life more colorful, more convenient and more fashionable. It has always maintained a leading position in the development of portable card speakers and wireless Bluetooth headset products, and has gained wide praise and recognition from people from all walks of life. We are working hard to make DGSHOW the most practical and trusted brand for our customers. Every work of DGSHOW is given its unique life and soul, perfect pursuit, natural sound. DGSHOW is not just a stage show for digital products. She has given the conviction of tasting life, and pursues aggressiveness and vitality. This belief, spirit and attitude lead this DGSHOW person to continue to develop better products.