Introduction
This manual provides comprehensive instructions for the safe and efficient operation of your Lepy LP-2020USB Hi-Fi Multimedia Class-T Digital Audio Amplifier. Please read this manual thoroughly before using the device and retain it for future reference.
Safety Instructions
- Power Supply: Use only the provided power adapter. Ensure the voltage matches the requirements of your region.
- Ventilation: Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Water and Moisture: Do not expose this apparatus to rain or moisture. Do not place objects filled with liquids, such as vases, on the apparatus.
- Heat: Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Cleaning: Clean only with a dry cloth.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
Package Contents
Please check that all items are present and in good condition:
- Lepy LP-2020USB Digital Audio Amplifier
- Power Adapter
- Remote Control
- User Manual (this document)
Product Overview

Figure 1: Front View of Amplifier and Remote Control. This image shows the front panel of the Lepy LP-2020USB amplifier, highlighting the display, control knobs, USB and SD/MMC card slots, AUX input, and the included remote control.

Figure 2: Angled View of Amplifier. This image provides an angled perspective of the Lepy LP-2020USB amplifier, showcasing its compact design and the heat sink fins on top.
Front Panel Controls and Inputs:
- Display Screen: Shows current mode, track information, and volume level.
- Volume Knob: Adjusts the master volume.
- Mode Button: Switches between input sources (AUX, USB, SD/MMC, Bluetooth).
- Mute Button: Mutes/unmutes audio output.
- Navigation Buttons (Previous/Next/Play/Pause): Controls media playback for USB/SD/MMC.
- SEL Button: Selects options or confirms settings.
- AUX Input: 3.5mm stereo input for external audio devices.
- USB Port: For connecting USB flash drives.
- SD/MMC Slot: For inserting SD or MMC memory cards.
Rear Panel Connections:

Figure 3: Rear View with Connection Diagram. This image illustrates the rear panel of the amplifier, showing the RCA input/output jacks, speaker terminals, and DC power input. It also depicts how to connect a source device (like a DVD player) and speakers.
- RCA Input (L/R): For connecting audio sources like CD players, DVD players, or other devices with RCA outputs.
- RCA Output (L/R): For daisy-chaining to another amplifier or powered subwoofer.
- Speaker Terminals (+R -R +L -L): For connecting passive speakers. Ensure correct polarity.
- DC 12V 5A Input: For connecting the power adapter.
- Antenna: For Bluetooth signal reception.
Setup
- Connect Speakers: Connect your passive speakers to the speaker terminals on the rear panel. Ensure the positive (+) terminal of the amplifier connects to the positive (+) terminal of the speaker, and the negative (-) to the negative (-).
- Connect Audio Source:
- RCA Input: Connect your audio source (e.g., CD player, TV) to the RCA Input jacks on the rear panel using an RCA cable.
- AUX Input: For devices with a 3.5mm output (e.g., smartphone, tablet), connect to the AUX input on the front panel.
- USB/SD/MMC: Insert a USB flash drive or SD/MMC card into the respective slot on the front panel.
- Connect Power: Plug the provided power adapter into the DC 12V 5A input on the rear panel, then plug the adapter into a wall outlet.
- Power On: Press the power button on the front panel or remote control to turn on the amplifier.
Operating Instructions
Selecting Input Source:
Press the MODE button on the front panel or remote control to cycle through available input sources: AUX, USB, SD/MMC, and Bluetooth.
Volume Control:
Rotate the VOLUME knob on the front panel clockwise to increase volume and counter-clockwise to decrease. Alternatively, use the volume buttons on the remote control.
USB/SD/MMC Playback:
When a USB drive or SD/MMC card is inserted and the corresponding mode is selected, the amplifier will automatically begin playing supported audio files. Use the navigation buttons (Previous, Next, Play/Pause) on the front panel or remote to control playback.
Bluetooth Pairing:
- Switch the amplifier to Bluetooth mode using the MODE button. The display will indicate "Bluetooth" or a similar pairing status.
- On your Bluetooth-enabled device (e.g., smartphone, tablet), enable Bluetooth and search for available devices.
- Select "Lepy LP-2020USB" (or similar name) from the list of found devices to pair.
- Once paired, you can stream audio wirelessly from your device to the amplifier.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or aerosol sprays.
- Storage: If storing the amplifier for an extended period, disconnect it from the power supply and store it in a cool, dry place.
- Ventilation: Ensure the ventilation openings are clear of dust and debris to prevent overheating.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power adapter not connected; Power outlet not working; Amplifier off. | Ensure power adapter is securely connected to amplifier and wall outlet. Test outlet with another device. Press power button. |
| No sound | Incorrect input source selected; Volume too low; Speakers not connected; Mute function active; Faulty audio cable. | Select correct input mode. Increase volume. Check speaker connections and polarity. Press Mute button. Replace audio cable. |
| Distorted sound | Volume too high; Poor audio source quality; Incorrect speaker impedance. | Reduce volume. Try a different audio source. Ensure speakers match amplifier's impedance (8 Ohm recommended). |
| USB/SD card not playing | Incorrect mode; Unsupported file format; Corrupted media. | Ensure USB/SD mode is selected. Check if audio files are in supported format (e.g., MP3). Try a different USB drive/SD card. |
| Bluetooth not pairing | Amplifier not in Bluetooth mode; Device too far; Bluetooth disabled on source device. | Switch amplifier to Bluetooth mode. Move device closer. Enable Bluetooth on your source device and rescan. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | LP-2020USB |
| Brand | Lepy |
| Number of Channels | 2 |
| Voltage | 100 Volts, 12 Volts (Input) |
| Mounting Type | Freestanding |
| Package Type | Box |
| Parcel Dimensions | 28 x 26.2 x 6.6 cm |
| Item Weight | 880 g |
| ASIN | B071Y3QYNW |
| UPC | 701772194156 |
| Date First Available | Nov. 27 2017 |
Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact the retailer where the product was acquired. Keep your proof of purchase for warranty claims.
For further assistance, you may also visit the official Lepy website or contact their customer service department.





