F&D (Fenda Technology) is a leading audio manufacturer specializing in multimedia speakers, soundbars, open-ear headphones, and electro-acoustic equipment.
1993 ۾ قائم ٿيو، Fenda ٽيڪنالاجي (widely known under the consumer brand F&D) started with the research, development, and manufacturing of loudspeakers. After nearly three decades of development and innovation, the company has established four core competencies in electro-acoustics, wireless technology, software, and precision manufacturing.
Today, F&D designs and produces a diverse portfolio of consumer audio equipment, including 2.1 multimedia computer speakers, home theater soundbars, wireless subwoofers, and Bluetooth headphones. Based in the Fenda Hi-Tech Park in Shenzhen, China, the company continues to deliver patented audio solutions to users worldwide.
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Switch to Bluetooth mode using the Source or Bluetooth button on your speaker or remote. The device will enter pairing mode and the LED indicator will flash. Turn on Bluetooth on your mobile device, search for the F&D model name (e.g., 'Fenda A521X'), and connect. If prompted for a PIN, enter '0000'.
Ensure the optical cable is securely connected and not bent sharply (over 50 degrees). Additionally, check that your TV or source device is explicitly set to 'PCM mode' for digital audio output rather than passing raw surround sound data.
With both headphones powered on, double-click the touch area on both earbuds simultaneously, then immediately press and hold the touch area for 5 seconds. This will clear the pairing records and re-enter Bluetooth pairing state.
F&D products generally come with a 1-year warranty covering technical service and parts when purchased from an authorized dealer. Keep your original invoice and the completed warranty card, as they are required to claim repair services.