Trasam M300 DAC Bluetooth Amplifier User Manual

1. Introduction

The Trasam M300 is a high-fidelity decoding amplifier designed to enhance your audio experience. This all-in-one unit combines Bluetooth 5.0 connectivity, multiple digital and analog inputs, and powerful amplification to drive passive speakers. Featuring ESS9018K2M and ATS2825 decoding chips, it supports high-resolution audio up to 32Bit/192kHz and various lossless formats, making it ideal for home theater and desktop audio setups.

2. Package Contents

Please check the package for the following items:

• Trasam M300 DAC Bluetooth Amplifier Unit
• Power Adapter (24V/3A)
• Remote Control
• Bluetooth Antenna
• User Manual (this document)

3. Product Overview

3.1 Front Panel

Image: Front view of the M300 amplifier, showing the display, switchgear, and volume knob.

• Switchgear: Power on/off and input selection.
• Display: Shows current input mode (e.g., 'BLUE' for Bluetooth) and other status indicators.
• Volume Knob: Rotates to adjust volume. Short press to switch input modes.

3.2 Back Panel

Image: Back view of the M300 amplifier, detailing all input and output ports.

• AUX Input: 3.5mm analog audio input.
• BT Antenna: Connector for the Bluetooth antenna.
• PC USB Input: USB-B port for connecting to a computer as a sound card.
• USB Input: USB-A port for U-Disk decoding playback.
• OPT (Optical) Input: Optical fiber connector for digital audio input.
• COA (Coaxial) Input: Coaxial interface for digital audio input.
• RCA Speaker Outputs: Red and black terminals for connecting passive speakers.
• DC IN: Power socket for the 24V/3A power adapter.

4. Setup

4.1 Connecting Speakers

1. Ensure the M300 amplifier is powered off.
2. Connect your passive speakers to the RCA speaker output terminals on the back of the M300. Ensure correct polarity (red to red, black to black) for each channel.

Image: Diagram illustrating how to connect stereo bookshelf speakers and card pack speakers to the M300 amplifier.

4.2 Connecting Audio Sources

The M300 supports multiple input sources:

• Bluetooth: Attach the Bluetooth antenna to the BT connector on the back panel.
• PC-USB: Connect a USB-B cable from your computer to the PC USB input on the M300. Your computer will recognize the M300 as an external sound card.
• 3.5mm AUX: Connect an audio cable from your device's headphone jack or line-out to the 3.5mm AUX input.
• Optical/Coaxial: Connect an optical fiber cable or coaxial cable from your digital audio source (e.g., TV, DVD player, game console) to the OPT or COA input respectively.
• U-Disk: Insert a USB flash drive containing WAV/APE/FLAC/MP3 audio files into the USB input.

Image: Diagram showing connection of a laptop via PC-USB and a USB flash drive to the M300.

Image: Close-up of the optical and coaxial input ports with corresponding cables.

4.3 Power Connection

1. Connect the power adapter to the DC IN port on the back of the M300.
2. Plug the power adapter into a suitable wall outlet.

5. Operating Instructions

5.1 Power On/Off

Press the 'Switchgear' button on the front panel to power on or off the device.

5.2 Input Selection

Short press the 'Volume Knob' on the front panel or use the 'MODE' button on the remote control to cycle through the available input sources (Bluetooth, PC-USB, AUX, Optical, Coaxial, U-Disk).

5.3 Volume Control

Rotate the 'Volume Knob' on the front panel clockwise to increase volume and counter-clockwise to decrease volume. Alternatively, use the 'V+' and 'V-' buttons on the remote control.

Image: Close-up of the volume knob, indicating that a short press switches mode and rotation adjusts volume.

5.4 Bluetooth Pairing

1. Select 'Bluetooth' input mode on the M300. The display will show 'BLUE' and the Bluetooth indicator may flash.
2. On your mobile device, enable Bluetooth and search for available devices.
3. Select 'M300' from the list of devices to pair. Once connected, the display will show a steady 'BLUE'.

Image: Illustration of a smartphone connected to the M300 via Bluetooth 5.0, showing various music apps.

5.5 U-Disk Playback

1. Insert a USB flash drive (formatted to FAT32) containing WAV/APE/FLAC/MP3 audio files into the USB input port.
2. Select 'U-Disk' input mode. The M300 will automatically detect and begin playing audio files.
3. Use the remote control to navigate tracks (play/pause, next/previous).

5.6 Remote Control Functions

The included remote control allows for convenient operation:

• Power Button: Turns the unit on/off.
• MODE Button: Switches between input sources.
• Play/Pause, Next/Previous: Controls media playback (for U-Disk and potentially Bluetooth).
• V+/V-: Adjusts volume.
• EQ Adjustment Zone:
• H (Treble): Adjustable from -4 to +4.
• B (Bass): Adjustable from -4 to +4.

Image: Remote control highlighting the EQ adjustment buttons for bass (B) and treble (H), adjustable from -4 to +4.

5.7 APP Control Mode

The M300 supports APP control for enhanced functionality. Download the official APP (contact customer service for download link) to your smartphone (iOS or Android).

Image: Screenshots of the APP control interface, showing options for volume adjustment, U disk file browsing, playing mode selection, and audio source switching.

The APP allows you to:

• Adjust volume.
• View and select U-disk files.
• Control playback (play, pause, next, previous).
• Switch audio sources.

6. Specifications

Image: Detailed product information table including dimensions and key specifications.

7. Troubleshooting

• No Sound:
  • Ensure the power adapter is securely connected and the unit is powered on.
  • Verify that speakers are correctly connected to the output terminals.
  • Check that the correct input source is selected.
  • Adjust the volume level on both the amplifier and your source device.
  • Ensure speaker wires are not short-circuited.
• Bluetooth Connection Issues:
  • Make sure the Bluetooth antenna is properly attached.
  • Ensure the M300 is in Bluetooth pairing mode.
  • Disable and re-enable Bluetooth on your source device, then try pairing again.
  • Move your source device closer to the M300 to ensure it's within the 10-meter effective range.
  • Clear previous Bluetooth connections on your device.
• U-Disk Playback Not Working:
  • Ensure the USB flash drive is formatted to FAT32.
  • Verify that the audio files are in supported formats (WAV, APE, FLAC, MP3).
  • Try a different USB flash drive.
• Poor Sound Quality:
  • Check all cable connections for looseness or damage.
  • Ensure you are using high-quality audio cables.
  • Adjust bass and treble settings using the remote control.
  • Test with different audio sources and files to isolate the issue.

8. User Tips

• For optimal sound quality, use high-resolution audio files and digital inputs (Optical/Coaxial/PC-USB) when possible.
• Experiment with the bass and treble adjustments on the remote control to tailor the sound to your preference and speaker characteristics.
• When using Bluetooth, ensure there are no major obstructions between the amplifier and your source device for a stable connection.
• Consider using the dedicated APP for more convenient control and access to U-disk features.

9. Maintenance

• Keep the device in a dry, well-ventilated area, away from direct sunlight, heat sources, and moisture.
• Clean the exterior of the amplifier with a soft, dry cloth. Do not use liquid cleaners or solvents.
• Avoid placing heavy objects on top of the unit.
• Ensure proper ventilation around the unit to prevent overheating.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.