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Our website: www.fosiaudio.com
Amazon store: www.amazon.com/fosiaudio
Our Youtube channel: Fosi Audio
Our Facebook page: Fosi Audio
After-sale Service and Technical Support Email:
support@fosiaudio.com
fosiaudio@hotmail.com
Warranty Information
• All Fosi Audio products have an 18-month limited warranty on
parts and labor from the date of purchase. Please contact us if
you have any problems.
About Fosi Audio
• Fosi Audio designs and builds innovative audio products with
all your music in mind. Great sound, simple but elegant
designs, high-quality materials, and truly useful features are
what Fosi Audio is about. We sincerely hope you get as much
enjoyment from our products as we’ve had to create them!
Fosi Audio Product’s User Manual
15: How can I connect T20 to TV?
• The 3.5mm AUX jack is the audio input. It can through 3.5mm
AUX input to connect your TV.
16: Why there is no voice from my amplifier?
• Please check whether the cable of power supply is connected to
T20 and whether the power indicator is on.
• Make sure the T20's indicator light is on when the power is turned
on.
• Please check that the T20 and your source components are
turned on and not set to minimum volume, if possible replace
your source and test again.
• Check that the wire connections from the audio source to each
speaker in the amplifier are connected correctly.
• Please check that the cable is not loose, damaged. Incomplete
connection is one of the main reasons for no sound.
• Please make sure the Bluetooth is paired or not, if Bluetooth is
connected, AUX input will be disconnected. If you want to
connect this amplifier with a 3.5mm AUX cable, you need to
disconnect the Bluetooth first.
• Please make sure that the headset is connected or not. If the
headset is connected, the speaker will be disconnected.
17: Which Bluetooth chip does T20 have?
• The T20 is equipped with QCC3031 Bluetooth chip, which
supports Apple acc and aptx.
Note: QCC3031 Bluetooth chip does not support apt-X LL.
18: an I use Bluetooth head phones with this unit?
• This tube amplifier is a Bluetooth receiver, not a Bluetooth
transmitter. It works with 3.5mm wired headphones.