1. Introduction
Thank you for purchasing the Trevi FRS 1490 RW Wireless Headphones. These headphones are designed to provide a high-quality audio experience with the freedom of wireless connectivity. Featuring RF 2.4 GHz transmission, a charging base, and versatile connectivity options including optical and 3.5mm jack inputs, they are compatible with televisions, Hi-Fi systems, and smartphones. This manual provides detailed instructions for proper setup, operation, and maintenance of your device.
2. Package Contents
Please check the package contents to ensure all items are present:
- Trevi FRS 1490 RW Wireless Headphones
- Charging Base
- Power Adapter
- Optical Audio Cable
- 3.5mm Jack Audio Cable
- User Manual (this document)
3. Product Overview
3.1 Headphones
The headphones feature an adjustable headband for comfortable wear during extended listening sessions. Controls for power and volume are located on the earcups.

Image Description: A front view of the Trevi FRS 1490 RW Wireless Headphones, showcasing the over-ear design and adjustable headband.

Image Description: A side view of the Trevi FRS 1490 RW Wireless Headphones, highlighting the left earcup with integrated control buttons for power and volume.
3.2 Charging Base
The charging base serves as both a charging station and the RF transmitter. It includes slots for the headphones, a charging indicator LED, and various audio input ports on the rear.

Image Description: A top-down view of the Trevi FRS 1490 RW charging base, clearly showing the two recessed slots where the headphones rest for charging and the central LED indicator.

Image Description: A rear view of the Trevi FRS 1490 RW charging base, illustrating the various connectivity ports: an AUX/Optical input selector switch, a 3.5mm AUX input jack, an Optical audio input, and a USB power input port.
4. Setup
4.1 Initial Charging
- Connect the power adapter to the USB port on the rear of the charging base.
- Plug the power adapter into a wall outlet.
- Place the headphones onto the charging base. Ensure the charging contacts align. The LED indicator on the base will show charging status.
- Allow the headphones to charge fully before first use.
4.2 Connecting to an Audio Source (TV/Hi-Fi)
The charging base acts as the transmitter and can connect to your audio source via optical or 3.5mm jack.
4.2.1 Optical Connection (Recommended for Digital Audio)
- Ensure your TV or audio device has an optical audio output port.
- Connect one end of the optical audio cable to the Optical IN port on the rear of the charging base.
- Connect the other end of the optical audio cable to the optical audio output port on your TV or audio device.
- Set the AUX/OPTICAL switch on the charging base to 'OPTICAL'.
- On your TV or audio device, ensure the audio output is set to 'Optical' or 'Digital Audio Out'.
4.2.2 3.5mm Jack Connection (Analog Audio)
- Ensure your TV or audio device has a 3.5mm headphone jack or an AUX audio output.
- Connect one end of the 3.5mm jack audio cable to the AUX IN port on the rear of the charging base.
- Connect the other end of the 3.5mm jack audio cable to the headphone jack or AUX output on your TV or audio device.
- Set the AUX/OPTICAL switch on the charging base to 'AUX'.
- On your TV or audio device, ensure the audio output is enabled for the connected port.
4.3 Pairing Headphones with Base
The headphones and charging base are typically pre-paired. Once the base is connected to an audio source and powered, and the headphones are charged and powered on, they should automatically connect. If connection issues occur, refer to the Troubleshooting section.
5. Operating Instructions
5.1 Powering On/Off
- To power on the headphones, press and hold the Power button on the earcup until the indicator light illuminates.
- To power off, press and hold the Power button again until the indicator light turns off.
5.2 Volume Control
- Use the Volume Up (+) and Volume Down (-) buttons on the earcup to adjust the listening volume.
5.3 Dual Connectivity (TV + Smartphone)
The headphones support simultaneous connection to a TV (via the charging base) and a smartphone. This allows you to receive calls without interrupting your TV audio.
- When a call is received on your connected smartphone, the TV audio will automatically lower.
- You can answer and manage calls directly through the headphones (microphone integrated).
- After the call, TV audio will resume at its previous level.
5.4 Automatic Shutdown
The headphones feature an automatic shutdown function to conserve battery life. If no audio signal is detected for a certain period, the headphones will automatically power off.
6. Maintenance
6.1 Cleaning
- Wipe the headphones and charging base with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or harsh chemicals.
6.2 Battery Care
- To maximize battery lifespan, avoid fully discharging the headphones frequently.
- Store the headphones in a cool, dry place when not in use.
- If storing for an extended period, charge the battery to approximately 50% every few months.
6.3 Storage
- Store the headphones on their charging base or in a protective case to prevent damage.
- Avoid exposing the device to extreme temperatures or direct sunlight.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio from headphones | Headphones not powered on Base not powered Incorrect audio input selected on base Audio source not playing or output disabled Headphones not paired with base | Ensure headphones are powered on. Check power connection to the charging base. Verify AUX/OPTICAL switch is set correctly. Check TV/audio device settings and volume. Power cycle both headphones and base. |
| Poor audio quality or interference | Out of range Obstructions between headphones and base Interference from other 2.4 GHz devices | Move closer to the charging base. Ensure a clear line of sight between headphones and base. Move the base away from other wireless devices (e.g., Wi-Fi routers). |
| Headphones not charging | Improper placement on base Base not powered Dirty charging contacts | Ensure headphones are correctly seated on the base. Check power connection to the charging base. Clean charging contacts on both headphones and base with a dry cloth. |
| Cannot connect to smartphone | Smartphone not compatible or feature not enabled | Ensure your smartphone supports the dual connectivity feature. Check smartphone settings for audio output. |
8. Specifications
| Brand | Trevi |
| Model | FRS 1490 RW |
| Connectivity Technology | Wireless (RF 2.4 GHz) |
| Wireless Communication Technology | RF |
| Ear Placement | Over-ear |
| Form Factor | Over-ear |
| Headphone Jack | 3.5 mm Jack (on base) |
| Compatible Devices | Televisions, Mobile phones |
| Color | Black |
| Item Weight | 550 g |
| Package Dimensions | 20 x 20 x 10 cm |
| Batteries Included | Yes |
| Battery Cell Composition | Lithium Ion |
| Additional Features | Rechargeable battery, Integrated microphone, Automatic shutdown |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or visit the official Trevi website. Keep your proof of purchase for any warranty claims.







