Introduction
This manual provides essential instructions for setting up, operating, and maintaining your Sony SRSX55 Portable Bluetooth Speaker. Please read this manual thoroughly before using the speaker to ensure proper and safe operation.

Figure 1: The Sony SRSX55 Portable Bluetooth Speaker in an outdoor setting.
Setup
1. Charging the Speaker
Before initial use, fully charge the speaker. Connect the supplied USB AC adapter to the speaker's DC IN port and then to a wall outlet. The CHARGE indicator will light up during charging and turn off when complete. A full charge provides up to 10 hours of playback.

Figure 2: Rear view of the Sony SRSX55 speaker, highlighting the power input and other ports.
2. Bluetooth Pairing
- Turn on the speaker by pressing the I/O (Power) button.
- Press and hold the Bluetooth PAIRING button until the Bluetooth indicator flashes rapidly.
- On your Bluetooth device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "SRSX55" from the list. Once connected, the Bluetooth indicator will stop flashing and remain lit.
3. NFC One-Touch Connection
If your device supports NFC, you can connect by simply touching your NFC-enabled device to the N-Mark on the speaker. Follow the on-screen prompts on your device to complete the connection.
4. Auxiliary Audio Input
For devices without Bluetooth, connect an audio cable (not supplied) from your device's headphone jack to the AUDIO IN port on the speaker. Press the AUDIO IN button on the speaker to switch to auxiliary input mode.
Operating the Speaker
1. Basic Controls
- Volume: Use the VOL + and VOL - buttons on the speaker or your connected device.
- Play/Pause: Press the Play/Pause button on the speaker or your connected device.
- Skip Track: Use the Previous/Next track buttons on the speaker or your connected device.
2. Sound Modes
Press the SOUND button to cycle through different sound modes, including ClearAudio+ for enhanced sound quality and DSEE for revitalizing compressed audio files.
3. Speakerphone Functionality
When a call comes in, the speaker will ring. Press the Call button to answer. Speak into the speaker's built-in microphone. Press the Call button again to end the call.
4. Charging External Devices
You can charge a smartphone or tablet by connecting it to the speaker's USB port (1.5A output) using a compatible USB cable (not supplied). The speaker must be powered on or connected to AC power to provide charging.
Video 1: Demonstrates music streaming with the Sony SRSX55 speaker.
Maintenance
1. Cleaning
Wipe the speaker's exterior with a soft, dry cloth. Do not use abrasive cleaners, solvents, or alcohol, as these can damage the finish. Avoid getting moisture into any openings.
2. Battery Care
To prolong battery life, avoid fully discharging the battery frequently. If the speaker will not be used for an extended period, charge it to approximately 50% every six months to prevent over-discharge.
Troubleshooting
- No Power: Ensure the speaker is charged or connected to AC power. Press and hold the power button for a few seconds.
- No Sound: Check the volume levels on both the speaker and the connected device. Ensure the correct input source (Bluetooth, AUDIO IN) is selected.
- Bluetooth Pairing Issues: Make sure the speaker is in pairing mode (Bluetooth indicator flashing rapidly). Delete "SRSX55" from your device's Bluetooth list and try pairing again. Ensure your device is within 10 meters of the speaker.
- Poor Sound Quality: Move the speaker closer to the connected device to reduce interference. Avoid placing the speaker near metal objects or other electronic devices that may cause interference.
Video 2: Provides an overview of the sound quality features of the Sony SRSX55 speaker.
Specifications
| Model Name | SRSX55 |
| Brand | Sony |
| Speaker Type | Portable Bluetooth Speaker with Subwoofer |
| Connectivity Technology | Bluetooth (SBC, AAC, LDAC), NFC, USB, Auxiliary Input |
| Audio Output Mode | Stereo (2.1 Channel) |
| Speaker Maximum Output Power | 30 Watts |
| Battery Life | Up to 10 hours |
| Power Source | Battery & AC |
| Control Method | Touch |
| Product Dimensions | 8.8 x 2 x 4.8 inches |
| Item Weight | 2.6 pounds |
| Water Resistance | Not Water Resistant |

Figure 3: Internal components of the Sony SRSX55, illustrating the speaker and subwoofer arrangement.
Warranty and Support
For warranty information and customer support, please refer to the warranty card included in your product packaging or visit the official Sony support website. Keep your proof of purchase for warranty claims.
- Included Components: USB AC adapter, Micro USB cable, Startup Guide, Reference guide, Warranty card.
Video 3: A brief overview of the Sony SRSX55/BLK Portable Bluetooth Speaker.