HiFi BASS Headphone Amplifier

Product Introduction

This is a built-in battery portable HIFI headphone amplifier, which supports charging and adjusting volume and bass. Using a 3.5mm cable, it can connect to your PC, smartphone, and game console, etc. It can also connect to Bluetooth devices. It is used to improve the volume and sound quality of headphones.

Product Features

• Built-in high capacity battery
• Support charging over voltage protection
• Support high and low impedance earphone switch
• Support 16~600 Ω impedance earphones
• Support output volume adjustment and bass adjustment
• Support one 3.5mm headphone port and one 3.5mm input port
• Support Bluetooth connection
• Type-c port for charging
• Aluminum alloy material, full of texture

Product Specifications

Package Content

• 1: HIFI Headphone Amplifier - 1 pcs
• 2: 3.5mm Audio Cable - 1 pcs
• 3: Charging Cable - 1 pcs
• 4: User Manual - 1 pcs

Interface Program

The amplifier features several ports and indicators for operation:

• ① Volume adjustment knob: The minimum volume position can turn off the power.
• ② Gain switch: Switch to 'L' position when using 15 Ω ~ 32 Ω earphones. Switch to 'H' position when using 150 Ω ~ 600 Ω earphones.
• ③ 3.5mm headphone port: Connect your 3.5mm headphones or sound system here.
• ④ Power indicator: A RED light illuminates when the power is turned on.
• ⑤ 3.5mm input port: Connect to laptops, iPads, smartphones, game consoles, etc. Please pull out the 3.5mm audio cable when connecting via Bluetooth.
• ⑥ Bass volume adjustment: Control the bass level.
• ⑦ Charging port: Connect to a 5V power adapter for charging. This port does not support data connecting.
• ⑧ Charging indicator: A RED light indicates charging, and a GREEN light indicates charging is finished.

The front panel displays the volume knob (1), gain switch (2), headphone output (3), power indicator (4), and input port (5). The top panel shows the bass volume adjustment (6), DC 5V charging port (7), and charge indicator (8).

Connection and Operation

Connecting the Amplifier:

• Use a 3.5mm audio cable to connect computers, tablet computers, mobile phones, game consoles, and other devices to the line-in interface of the HIFI audio amplifier.
• Alternatively, use the Bluetooth function: On your mobile phone, TV, computer, or other device, search for "BT AMP" for matching and connection. NOTE: Pull out the 3.5mm audio cable when using Bluetooth.
• Use 3.5mm headphones to connect to the line-out interface of the HIFI amplifier.

Operation:

• When the volume knob is properly adjusted, the device turns on.
• Adjust the volume to your liking.

Notes:

• When the power is low, the sound may be distorted. When the power is 0, the power indicator light will not illuminate. Please connect the HIFI audio amplifier to a power adapter for charging.

Safety Precautions:

• This product has a built-in lithium battery. For your safety, it is forbidden to:
  • Immerse the product in water.
  • Disassemble it.
  • Knock it destructively.
  • Use it near a fire source.
  • Discard it carelessly.
  • Use it in a high-temperature environment.

Connection diagrams show the amplifier being connected between a power adapter, a cell phone (via input), and headphones (via output). One diagram illustrates the front panel ports: 'Line in', 'Line out', and 'Power'.

FCC Compliance

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.