Q: HT4S Default Blue Light, Manual Mode Switch Required After Powering On

Upon powering up, the indicator light will turn blue (indicating Bluetooth mode by default). You have to switch modes manually.

Q: HT4S Indicator Lights for Input Modes

Input modes are color-coded for easy use: blue for Bluetooth, orange for AUX, and red for OPT.

Q: Does the HT4S Have a Standby Function?

The HT4S has no standby function. You can leave it powered on continuously. If you turn it off, you have to long-press the main volume knob for 1.5 seconds to activate the HT4S amplifier.

Item dimensions L x W x H	15.5 x 18.3 x 5.1 Centimeters
Voltage	230 Volts
Manufacturer	Fosi Audio
Maximum Supply Voltage	2.3E+2 Volts
Mounting Type	Freestanding
Brand	Fosi Audio
Number of Channels	5
Operating Temperature	20 Degrees Celsius
Output Power	400 Watts
Package Type Name	Box
Specification Met	CE, FCC, RoHS, WEEE
Material	Made entirely of aluminum alloy
Model	HT4S
Product Dimensions	15.49 x 18.29 x 5.08 cm; 1.57 kg
Item model number	HT4S
Mounting Hardware	HT4S Bluetooth Amplifier
Number of items	1
Audio Wattage	120 Watts
Wattage	250 Watts
Batteries Included	No
Batteries Required	No
Country of Origin	China
Item Weight	1 kg 570 g

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