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Small green circuit board with Bluetooth 2.1 module and soldered components

Ruth's sister

Ruth's sister Internal Power Cable Bluetooth 2.1 3.7-5V 3W 10M 80dB

SKU CH-XFJQ-291M6

Bluetooth 2.1 receiver board adds wireless audio to speakers with 3 W output, 10 m range and 80 dB SNR

  • Bluetooth 2.1 connectivity for wireless audio streaming up to 10 m range
  • 3 W output power drives speakers directly from a compact board
  • Operates on 3.7 V to 5 V DC for flexible power options
  • >80 dB signal-to-noise ratio keeps playback clean and clear
  • Frequency response 10 Hz to 20 000 Hz covers full audible range

What this board does

The Ruth's sister Bluetooth 2.1 receiver amplifier board accepts a DC supply between 3.7V and 5V and delivers 3W of audio output. It integrates an MP3 decoder and a digital-to-analog converter so you can stream wirelessly to passive speakers or add Bluetooth to an existing audio project. The Class 2 radio gives a typical range of about 10 metres.

Check your power source first

Verify that your project can provide a stable DC voltage within the 3.7V to 5V window before ordering. The board draws its supply and audio power from the same rails, so a sagging or noisy source will degrade the 80dB signal-to-noise ratio. No external antenna or separate amplifier stage is required, but the supply must be capable of sustaining the load.

What the package includes

The box contains one audio amplifier board only; no speaker, enclosure, wiring harness or mounting hardware is supplied. You will need to connect your own speakers and provide a suitable 3.7V to 5V power feed. The onboard Bluetooth 2.1 and MP3 decoding functions are ready to use once power and speakers are attached.

Highlights

  • Bluetooth 2.1 connectivity for wireless audio streaming up to 10 m range
  • 3 W output power drives speakers directly from a compact board
  • Operates on 3.7 V to 5 V DC for flexible power options
  • >80 dB signal-to-noise ratio keeps playback clean and clear
  • Frequency response 10 Hz to 20 000 Hz covers full audible range

Specifications

No published specifications for this item yet.

Questions about this item

What comes in the box with the Ruth's sister Bluetooth 2.1 amplifier board and what else is needed?

The package includes one audio amplifier board. A DC power source between 3.7V and 5V and speakers must be supplied separately.

Which version of the Ruth's sister board should I choose for a 5 V supply and 10 m range?

This single version operates from 3.7 V to 5 V, delivers 3 W output, uses Bluetooth 2.1 Class 2 and reaches about 10 m.

What does the 3 W output figure mean when the board is installed in a speaker system?

It provides up to 3 W of audio power into a connected speaker with a signal-to-noise ratio above 80 dB across 10 Hz to 20000 Hz.

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