Douk Audio 120W Mini Bluetooth 5.0 Power Amplifier 2.0 Channel Hi-Fi Stereo Class D Audio Amp Wireless Receiver TF USB Home Speaker (Upgrade Version) User Manual

Table of Contents

1. Package Contents
2. Product Overview
3. Installation and Connection
4. Operation Guide
5. Troubleshooting Tips
6. Frequently Asked Questions

1. Package Contents

• 1× Digital Power Amplifier
• 1× 19V Power Supply
• 1× USB Cable
• 1× 1:2 RCA Cable
• 1× 2:2 RCA Cable
• 1× 3.5mm AUX Cable
• 1× User Manual

2. Product Overview

The Douk Audio 120W Mini Bluetooth 5.0 Power Amplifier is a compact and powerful audio amplifier designed for home and desktop audio systems. It supports RCA, AUX, USB, Bluetooth 5.0, and TF card inputs, making it compatible with most audio devices. The amplifier delivers clear and clean sound without any audible noise even at high output levels.

3. Installation and Connection

1. Place the amplifier on a flat surface, away from direct sunlight, heat sources, and moisture.
2. Connect the included 19V power supply to the amplifier and plug it into an electrical outlet.
3. Connect your audio source to the amplifier using the appropriate input method (RCA, AUX, USB, Bluetooth, or TF card).
4. Connect your passive speakers to the amplifier using the banana speaker jacks. Ensure the speakers have an impedance between 4-16Ω.

4. Operation Guide

1. Turn on the amplifier by pressing the power/mode switch.
2. Select the desired input source by pressing the mode button until the corresponding LED indicator is lit.
3. Adjust the volume using the volume control knob.
4. For Bluetooth connection, enable Bluetooth on your device and search for "Douk Audio" to pair and connect.
5. For USB and TF card playback, insert your USB drive or TF card into the corresponding slot, and the amplifier will automatically start playing the audio files.

5. Troubleshooting Tips

• If no sound is coming from the speakers, check the connections and ensure the speakers are properly connected to the amplifier.
• If the Bluetooth connection is unstable, move your device closer to the amplifier and ensure there are no obstacles between the device and the amplifier.
• If the USB or TF card playback is not working, ensure the audio files are in supported formats (MP3, WAV, APE, FLAC) and the storage device is not larger than 128GB.
• If the amplifier is not turning on, check the power supply connection and ensure it is properly connected to the amplifier and the electrical outlet.

6. Frequently Asked Questions

What is the maximum output power of this amplifier?

The maximum output power of this amplifier is 60W x 2 when using a 24V/4Ω load.

What speaker impedance is compatible with this amplifier?

This amplifier is compatible with passive speakers with an impedance between 4-16Ω.

Can I use this amplifier with an active subwoofer?

No, this amplifier is designed for use with passive speakers only.

What is the maximum storage capacity for USB drives and TF cards?

The maximum storage capacity for USB drives and TF cards is 128GB.

Can I use this amplifier in my car or motorcycle?

Yes, the wide voltage range of DC 9-24V allows this amplifier to be used in cars and motorcycles.

Q: What inputs does this amplifier support?
A: The Douk Audio 120W Mini Bluetooth 5.0 Power Amplifier supports RCA, AUX, USB, Bluetooth 5.0, and TF card inputs.

Q: What file formats are supported for U-disk and TF card inputs?
A: The U-disk and TF card inputs support WAV, APE, and FLAC lossless formats.

Q: What is the maximum output power of this amplifier?
A: The amplifier can reach a maximum output power of 60W+60W, which is enough for most home desktop/bookshelf/indoor passive speakers (4-16Ω).

Q: Can this amplifier be used in a car or motorcycle?
A: Yes, the amplifier has a DC 9-24V wide voltage range, making it possible to be used in a car or motorcycle.

Q: Does this amplifier come with all necessary accessories?
A: Yes, the amplifier comes with a high-quality 19V power supply, USB cable (with shielding ring), 1:2 and 2:2 RCA cables, 3.5mm AUX cable, and user manual.

Q: Can this amplifier be controlled with a TV remote?
A: No, the amplifier cannot be controlled with a TV remote. However, the TV volume can be controlled with its own remote.

Q: Can this amplifier power five in-house speakers rated at 100W each?
A: No, the amplifier will not be able to power five speakers rated at 100W each. It may struggle to even power four small speakers.

Q: Is this amplifier iPod compatible?
A: Yes, the amplifier is iPod compatible through Bluetooth connection.

Q: Can this amplifier be used as an inexpensive guitar amplifier between a guitar fx processor and a passive 8ohm guitar speaker?
A: Yes, it is possible to use this amplifier in that way by running the guitar to the pedals to a mini mixer to the inputs of the amp.

Q: Can this amplifier be connected directly to a TV?
A: Yes, there is a line out in the back of the unit that can be used to connect it directly to a TV.