VIRE Mini Mp3 Player Bluetooth Audio Fm Kit Usb Mp3 Player Decoder Module

Key Features

• VIRE multi-function audio decoder module

• Bluetooth wireless audio reception

• USB flash-drive music playback

• TF / microSD card playback

• FM radio with station scanning

• AUX audio input

• MP3 playback

• WMA playback

• WAV playback

• FLAC playback

• APE playback

• High-contrast digital LED display

• Wireless IR remote control included

• DC 5V–12V operation

• ≥85dB published signal-to-noise ratio

• 20Hz–20kHz published frequency response

• <200mA operating current

• Approx. 600–800mV audio output

• Resume playback functionality

• Compact panel-mount format

• External amplifier required for passive speakers

Technical Specifications

Supported Audio Sources

Supported Audio Formats

Bluetooth Version Note

The current RoboGears listing specifies:

Bluetooth V4.0 / V5.0 depending on production batch

Therefore, customers who specifically require Bluetooth 5.0 should verify the available production revision before ordering.

Audio Output

Published output level:

Approx. 600–800mV

This is intended as an audio signal for an external amplifier stage.

It should not be treated as a high-power speaker output.

FM Radio

The module includes an onboard FM tuner with station scanning functionality.

For improved FM reception, an external antenna wire may be required depending on installation conditions.

Resume Function

The module supports playback memory/resume functionality, allowing it to remember playback state after a power cycle.

Exact resume behaviour can depend on the playback source and module revision.

Compatibility

The VIRE Mini MP3 Decoder is designed to serve as the audio-source section of an amplifier or speaker system.

Compatible Audio Sources

The module supports:

• Bluetooth smartphones

• Bluetooth tablets

• Compatible Bluetooth computers

• USB flash drives

• TF / microSD cards

• FM radio

• External AUX audio sources

Compatible Amplifiers

Its audio output can be connected to compatible amplifier inputs such as:

• PAM8403

• TPA3110

• TPA3116D2

• TPA3118

• TPA3255

• TDA-series amplifier boards

• Home audio amplifier boards

• Car audio amplifier circuits

• Other compatible analogue-input amplifiers

Always verify the input and grounding requirements of the amplifier being used.

Important — External Amplifier Required

This module is primarily an:

Audio Player / Decoder

It should not be treated as a high-power speaker amplifier.

For passive speakers, use:

VIRE Decoder → Audio Amplifier → Speakers

Example — Compact Bluetooth Speaker

Phone / USB / TF

↓

VIRE Decoder

↓

PAM8403

↓

Left + Right Speakers

Example — Higher-Power Audio System

Bluetooth / USB / TF / FM / AUX

↓

VIRE Decoder

↓

TPA3116D2 / TPA3255 Amplifier

↓

Left + Right Passive Speakers

Power Compatibility

The module operates from:

DC 5V–12V

For integration with higher-voltage amplifier systems such as 24V, 36V or 48V systems, provide the decoder module with an appropriate regulated low-voltage supply.

Do not connect a voltage above the module's specified maximum directly to it.

FM Antenna

For improved FM reception, a suitable antenna wire can be connected to the antenna point on the module where provided.

Keep the antenna away from:

• Large heat sinks

• Transformers

• Metal enclosure sections

• High-current wiring

where practical.

Required for a Complete Speaker System

You will generally need:

• VIRE decoder module

• Audio power amplifier

• Compatible speakers

• DC power supply

• Audio wiring

• Power wiring

Depending on your project, you may also need:

• FM antenna wire

• Power switch

• Amplifier volume/tone control

• Enclosure

• Connectors

Before Purchase

Brand: VIRE

Function: Bluetooth / USB / TF / FM / AUX Audio Decoder

Supply: DC 5V–12V

Bluetooth: V4.0 / V5.0 depending on batch

USB: Yes

TF Card: Yes

FM: Yes

AUX: Yes

IR Remote: Included

Display: Yes

External Amplifier Required for Passive Speakers: Yes

Applications

• DIY Bluetooth speakers

• Home audio systems

• Multimedia speakers

• Old amplifier upgrades

• Vintage radio upgrades

• Car audio projects

• Custom speaker cabinets

• Workshop audio systems

• Portable audio projects

• DIY amplifier builds

• Electronics projects

• Student audio projects

Who Is It For?

• DIY audio builders

• Electronics hobbyists

• Speaker builders

• Audio repair technicians

• Engineering students

• Makers

• Custom amplifier builders

📦 What's Included

❌ What's Not Included

Unless separately supplied, the standard system requires the following external components:

• Audio Power Amplifier

• Speakers

• DC Power Supply

• USB Flash Drive

• TF / microSD Card

• AUX Cable

• FM Antenna Wire

• Speaker Wiring

• Amplifier Enclosure

• Power Switch

Important Purchase Note

This product is an:

Audio Decoder / Media Player Module

It is not a complete amplifier or speaker system.

For passive speakers, the basic architecture is:

VIRE Decoder Module

Audio Power Amplifier

Speakers

Suitable DC Power Supply

Included Remote Control

A wireless IR remote is supplied for convenient operation of the player.

Remote functions can include playback and source-control operations supported by the module.

Media Storage

USB flash drives and TF/microSD cards are not included and must be supplied separately when those playback modes are required.

📚 Resources

The VIRE Mini MP3 module is manufactured in multiple production revisions.

When installing the module permanently, follow the connection markings printed on the actual PCB supplied.

Bluetooth version and minor hardware details may vary between production batches.

Getting Started

Step 1 — Identify the Connections

Before wiring, inspect the actual PCB and identify:

• DC power input

• Ground

• Left audio output

• Right audio output

• AUX connections where applicable

• FM antenna point

• Other labelled connections

Always follow the markings on the physical module.

Step 2 — Select the Power Supply

Supported supply:

DC 5V–12V

For typical testing and low-noise operation, a clean regulated supply is recommended.

Step 3 — Connect the Audio Output

Connect the decoder's audio output to the input of a compatible audio power amplifier.

Typical architecture:

VIRE Decoder → Amplifier Input

Do not connect passive speakers directly to a line-level decoder output.

Step 4 — Connect the Amplifier

Connect the amplifier to suitable speakers according to the amplifier's own specifications.

Step 5 — Reduce Volume

Before first startup, reduce the amplifier volume.

Step 6 — Apply Power

Apply the correct DC supply to the VIRE decoder module.

The digital display should illuminate.

Step 7 — Select the Required Mode

Use the module controls or supplied IR remote to select the required audio source:

• Bluetooth

• USB

• TF Card

• FM

• AUX

Bluetooth Setup

1. Select Bluetooth mode.

2. Enable Bluetooth on the smartphone.

3. Search for nearby devices.

4. Select the available VIRE/player device.

5. Complete pairing.

6. Start audio playback.

The exact Bluetooth pairing name may vary by production batch.

USB Playback

1. Load supported audio files onto a compatible USB storage device.

2. Insert it into the USB port.

3. Select USB playback mode if required.

4. Use the module controls or remote for playback.

TF / microSD Playback

1. Load compatible audio files onto the card.

2. Insert the card correctly.

3. Select card playback.

4. Control playback using the module or remote.

FM Radio Setup

1. Select FM mode.

2. Connect an antenna wire where required.

3. Run station scanning.

4. Select the desired available station.

For better reception, keep the antenna away from large metal components and electrically noisy wiring.

AUX Mode

Connect a compatible analogue audio source to the AUX input and select AUX mode.

Basic DIY Speaker Architecture

Bluetooth / USB / TF / FM / AUX

↓

VIRE Decoder

↓

Stereo Power Amplifier

↓

Left + Right Speakers

Important Power Note

If the main amplifier uses a voltage higher than 12V, do not connect that supply directly to the decoder.

Use a suitable regulated supply to provide the VIRE module with a voltage within:

5V–12V DC

🔧 Prototyping and Engineering Tips from RoboGears

1. Remember — This Is a Decoder, Not a Power Amplifier

The VIRE module handles:

• Bluetooth

• USB playback

• TF-card playback

• FM

• AUX

• Audio decoding

An external power amplifier is required for normal passive speakers.

2. Use a Clean Regulated Power Supply

Audio decoder boards can pick up switching noise from poor-quality supplies.

A clean regulated DC supply can help reduce:

• Hum

• Buzz

• Digital noise

• High-frequency whine

3. Keep Audio Wiring Short

Keep the audio connection between:

Decoder → Amplifier

as short as practical.

Long unshielded signal wires can collect electrical interference.

4. Use Shielded Audio Cable When Needed

For longer internal audio runs, shielded cable can reduce unwanted noise.

5. Use a Common Ground Correctly

When the decoder and amplifier are designed to share a supply/system ground, ensure the signal-ground connection is correct.

Poor grounding can cause:

• Hum

• Buzz

• Distortion

• Unstable audio

6. Add an FM Antenna

For improved FM reception, use an antenna wire connected to the designated ANT point where present.

A practical starting length is approximately:

15–20cm

Reception will depend strongly on the installation environment.

7. Keep the FM Antenna Away From Noise Sources

Avoid routing the antenna directly alongside:

• SMPS wiring

• High-current amplifier wiring

• Transformers

• Large heat sinks

• Metal shielding

8. Don't Exceed 12V

The published operating range is:

5V–12V DC

Do not connect 24V, 36V or 48V directly to this decoder.

9. Use a Voltage Regulator With High-Power Amplifiers

If your amplifier operates at 24V–48V, use an appropriate regulator or separate low-voltage supply for the decoder.

10. Bluetooth Version Can Vary

The current product is listed as:

Bluetooth V4.0 / V5.0 depending on production batch

Do not guarantee Bluetooth 5.0 unless the actual supplied revision is confirmed.

11. Don't Confuse FLAC Support With Bluetooth Lossless Audio

The module can decode FLAC files from supported local storage according to the published specification.

That does not automatically mean Bluetooth transmission itself is lossless.

12. Test Every Source Before Final Installation

Before mounting the module permanently, test:

• Bluetooth

• USB

• TF card

• FM

• AUX

• Remote control

• Display

• Left/right audio

• Power stability

Common Mistakes / Troubleshooting

Module Does Not Turn On

Check:

• DC supply voltage

• Supply polarity

• Wiring

• Power connections

Bluetooth Does Not Connect

Try:

• Selecting Bluetooth mode

• Restarting the module

• Turning smartphone Bluetooth off/on

• Moving closer

• Disconnecting another paired device

Bluetooth Connects but No Sound

Check:

• Smartphone volume

• Decoder output

• Amplifier input

• Amplifier power

• Amplifier volume

• Signal wiring

USB Drive Does Not Play

Check:

• Supported audio file format

• USB device

• File integrity

• Playback mode

TF Card Does Not Play

Check:

• Card insertion

• Audio files

• Playback mode

• Card condition

FM Reception Is Poor

Try:

• Adding an antenna wire

• Repositioning the antenna

• Moving away from metal

• Moving away from switching power wiring

• Rescanning stations

Hum or Buzz

Check:

• Grounding

• Power-supply quality

• Audio wiring

• Cable routing

• Shared power arrangement

Remote Does Not Work

Check:

• Remote battery

• Line of sight to the IR receiver

• Distance

• Obstruction

Engineering Principle

A complete multimedia speaker system can be viewed as:

Audio Sources → Decoder → Power Amplifier → Speakers

The VIRE module provides the audio-source and decoding stage, while the amplifier determines speaker-driving power.

FAQ

1. What is the VIRE Mini MP3 module?

It is a multi-function audio player/decoder module combining Bluetooth, USB, TF-card, FM-radio and AUX audio functions.

2. Is it an amplifier?

No.

It is primarily an audio decoder/player module.

Use an external power amplifier to drive passive speakers.

3. What is the operating voltage?

DC 5V–12V

4. Can I use a 5V supply?

Yes.

5V is within the specified operating range.

5. Can I use a 12V supply?

Yes.

12V is the upper end of the published supply range.

6. Can I connect 24V directly?

No.

Use a suitable voltage regulator to reduce the supply to within 5V–12V.

7. Does it have Bluetooth?

Yes.

8. Which Bluetooth version does it use?

The current RoboGears listing specifies:

Bluetooth V4.0 / V5.0 depending on production batch.

9. Does it support USB flash drives?

Yes.

10. Does it support TF / microSD cards?

Yes.

11. Does it have FM radio?

Yes.

An onboard FM tuner is provided.

12. Does it support AUX input?

Yes.

13. Which audio formats are supported?

The current published specification lists:

• MP3

• WMA

• WAV

• FLAC

• APE

14. Does it support FLAC files?

Yes, according to the current published specification.

15. Does FLAC support mean Bluetooth audio is lossless?

No.

FLAC file-decoding capability and Bluetooth transmission are separate things.

The listing does not document a verified lossless Bluetooth codec.

16. Does it have a display?

Yes.

A digital LED display is provided.

17. Is a remote control included?

Yes.

A wireless IR remote is included.

18. What is the frequency response?

Published specification:

20Hz–20kHz

19. What is the SNR?

Published specification:

≥85dB

20. What is the operating current?

Published specification:

<200mA

21. What is the audio output level?

Published specification:

Approximately 600–800mV

22. Can I connect passive speakers directly?

No.

Use:

VIRE Decoder → Audio Power Amplifier → Passive Speakers

23. Can I use it with PAM8403?

Yes, provided the decoder and amplifier are correctly powered and connected.

24. Can I use it with TPA3116D2?

Yes.

Its audio output can feed a compatible TPA3116D2 amplifier input.

25. Can I use it with TPA3255?

Yes, as an audio source/decoder.

Use the correct low-voltage supply for the VIRE module.

26. Can I use it to upgrade an old amplifier?

Yes.

It is useful for adding Bluetooth, USB, TF-card and FM playback to compatible older amplifier systems.

27. Can I build a Bluetooth speaker with it?

Yes.

A typical architecture is:

VIRE Decoder → Amplifier → Speakers

28. Does FM need an antenna?

An antenna is recommended for better FM reception.

Where the module provides an ANT connection, an approximately 15–20cm wire is a practical starting point.

29. Does it remember the last song?

The current product specification lists a resume/memory function.

Exact behaviour can depend on the playback mode and module revision.

30. Can I use it in a car audio project?

Yes, provided it receives a suitable regulated 5V–12V DC supply and is correctly connected to the audio system.

31. Can I use a 12V car electrical system directly?

The module's published range includes 12V, but automotive electrical systems can experience voltage transients above nominal battery voltage.

For a permanent vehicle installation, a properly regulated/protected supply is preferable.

32. Is Bluetooth 5.0 guaranteed?

No.

The current product specification says Bluetooth V4.0 / V5.0 depending on production batch.

33. What is included?

The current listing identifies:

• 1 × VIRE Mini MP3 Decoder Module

• 1 × Wireless IR Remote Control

34. Are speakers included?

No.

35. Is an amplifier included?

No.

36. Is the power supply included?

No power supply is specified as included.

Important Note

This module provides multimedia audio decoding and source selection.

For normal passive speakers, an external audio power amplifier is required.

Disclaimer

Bluetooth version and minor PCB/display details may vary between production batches.

Supported functions and connections should be verified against the actual module supplied when a project depends on a particular hardware revision.