Bluetooth Receiver for Car & Speaker with NFC Pairing
Your wired stereo still sounds good. This matte black receiver turns any speaker, hi-fi or car audio system into a Bluetooth 5.3 receiver with one tap. Tap your NFC phone to the top, and the music starts from the phone you already carry.
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Your wired stereo still sounds good. This matte black receiver turns any speaker, hi-fi or car audio system into a Bluetooth 5.3 receiver with one tap. Tap your NFC phone to the top, and the music starts from the phone you already carry.
Turn any wired speaker or car stereo into a Bluetooth receiver with one-touch NFC pairing
- Old stereo or speakers without Bluetooth
- Tedious manual Bluetooth pairing
- Wired-only car audio system
Give your wired stereo a wireless voice
Tired of running cables to your phone? Turn any speaker, hi-fi or car stereo into a Bluetooth receiver in one tap, with every cable included.
Tap once and your stereo is listening
- Tap your phone, skip the menus
The NFC zone on the top of the cube pairs an NFC-enabled phone by touch. There is no hunting through Bluetooth settings and no scrolling past old devices. Tap, wait for the LED to settle, and the music starts. It is the fastest way to pair a receiver that sits behind a cabinet and gets used every day.
- Connects to what you already own
Red and white RCA outputs feed a hi-fi amplifier or powered speakers. The 3.5mm jack covers bookshelf speakers and car stereos with an aux input. You pick the connection that matches your system, so the receiver works with the gear you have rather than asking you to replace it.
- Everything in the box
An RCA to 3.5mm cable, a 3.5mm to 3.5mm cable and a USB charging cable come in the box. You do not need to shop for adapters before the first song plays. The matte soft-touch shell feels solid in the hand and sits neatly next to a receiver or under a dashboard.
Connected in four steps
- 1Connect the output
Use the RCA to 3.5mm cable for a hi-fi line input, or the 3.5mm to 3.5mm cable for a speaker or car aux input.
- 2Power the receiver
Plug the micro-USB cable into a stable USB source. The blue status LEDs show the receiver is on.
- 3Tap to pair
Touch an NFC-enabled phone to the top of the cube. If your phone has no NFC, select the receiver once in Bluetooth settings.
- 4Start the music
Press play on your phone. Use the single square button to pair again or manage the connection.
Everything you need to get connected
- Bluetooth receiver unit×1
Matte black cube with NFC zone and single button
- RCA to 3.5mm audio cable×1
Red, white and black connectors for hi-fi line inputs
- 3.5mm to 3.5mm audio cable×1
For speaker or car aux inputs
- USB charging cable×1
Micro-USB power for the receiver
Your system still sounds good. It just cannot stream.

The stereo you still love
The amp still has warm mids and the speakers still fill the room. But every playlist means digging out an aux cable, switching inputs and hoping the phone stays plugged in. Nobody wants to replace a system that still sounds good, so the cable stays out and the phone stays on the couch arm.
One tap and it connects
Touch an NFC-enabled phone to the top of the cube and it pairs without opening a single Bluetooth menu. The receiver sits between your phone and the RCA or 3.5mm input you already use, so the speaker or stereo does the rest. Nothing on the old system changes.

Ready when you are
The box holds the receiver, an RCA to 3.5mm cable, a 3.5mm to 3.5mm cable and a USB charging cable. Setup takes a few minutes. After that, the blue status LEDs tell you the link is live, and the stereo plays from your phone every time you tap.
Upgrade the system you already love
| B11 Receiver | New Bluetooth Speaker | Car Head Unit Upgrade | |
|---|---|---|---|
| Keeps your current speakers or amp | — | — | |
| Works with RCA line inputs | — | — | |
| Works with 3.5mm aux inputs | Partial | Partial | |
| NFC one-touch pairing | Partial | Partial | |
| Cables included | — | — | |
| Needs installation | — | — |
Characteristics
Reviews
Questions and answers
Yes. The receiver has red and white RCA outputs and a 3.5mm jack, and the box includes an RCA to 3.5mm cable and a 3.5mm to 3.5mm cable. Use RCA for a hi-fi amplifier with line inputs, and use the 3.5mm output for a speaker or car stereo that has an aux input.
Pair it the normal way. Turn on Bluetooth on the phone, select the receiver in the device list, and the connection holds from then on. NFC just removes the menu step, so a phone without NFC still streams without any extra gear.
It runs on micro-USB power. Plug the included USB charging cable into any stable USB source, such as a wall adapter, a USB port on the stereo or a car USB port. A weak or unstable USB source can cause dropouts, so use a dependable adapter.
For most people, yes. A new Bluetooth speaker or head unit replaces a system that still sounds good, and the cost adds up quickly. This receiver keeps your amp, speakers and car stereo in place and adds wireless playback for a small share of that spend. It also comes with every cable, so there is nothing else to buy before you start listening.
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