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3W mini audio stereo amplifier
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Price: $10.17
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DFRobot Item #: DFR0119 -

This is a mini stereo amplifier. It is a fully functional, two-channel audio amplifier, with an integrated sleep mode function. You can disable it on your sketch if you are not using it or not needed by connecting the sleep pin on your board. It&;lsquo;s specially good for some DIY project.|Specification| Power Supply: DC 3.6-5.5V (DO NOT apply over 5.5V, it damage the chip presently) Output power: 3w+3w (4 ohms) Efficiency: &;gt;90% Size: 15.5*24mm (0.6*0.94&;#39;&;#39;)|Documents| Wiki Doc...

Audio Amplifier 3W PAM840
Price: $4.24
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Elecrow Item #: EL-ASAA840PA -

    This is a Super mini digital amplifier board, ultra-thin, can be very convenient to place in the gap of small plastic boxes or other devices. It can obtain maximum power output at a lower voltage. It also has built-in standby electronic switch, high-gain buffer amplifier, short circuit protection, which make this module perfect for MP3/MP4/notebook. Specification New efficient digital amplifier chip Special internal output processing circuit Eliminating the conventional LC...

Audio Amplifier PAM8403 with Volume Control
Price: $3.18
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Elecrow Item #: EL-ASAA8403P -

The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high quality sound reproduction. The new filter less architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus to save the system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of class-AB cousins. It can extend the battery life, ideal for portable applications.Features3W Output at 10%...

JustBoom Amp HAT
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Price: $119.14
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Sparkfun Item #: DEV-14318 -

"The JustBoom Amp HAT is a high-quality audio amplifier designed specifically for the Raspberry Pi. Digital-to-analog conversion is also included with the Amp HAT, so no external sound cards or DACs are required. Simply stack the plug-and-play add-on board (HAT) onto your Raspberry Pi A+, B+, 2B or the new 3B, and it will be ready to use immediately. JustBoom designed the Amp HAT to be simple to install and use. With no soldering required and all the mounting hardware already provided, this...

JustBoom DAC HAT
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Price: $59.57
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Sparkfun Item #: DEV-14319 -

"The JustBoom DAC HAT is a plug-and-play, high-resolution, digital-to-analog converter for the Raspberry Pi. Simply stack the plug-and-play add-on board (HAT) onto your Raspberry Pi A+, B+, 2B or the new 3B, and it will be ready to use immediately. JustBoom designed the Raspberry Pi DAC HAT to be simple to install and use. With no soldering required and all the mounting hardware already provided, this HAT is suitable for both beginners and seasoned professionals alike. Just connect your...

JustBoom Digi HAT
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Price: $59.57
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Sparkfun Item #: DEV-14317 -

"The JustBoom Digi HAT is a high-resolution digital audio output add-on board for the Raspberry Pi. Simply stack the plug-and-play add-on board (HAT) onto your Raspberry Pi A+, B+, 2B or the new 3B, and it will be ready to use immediately. The JustBoom Digi HAT produces an unmodified, high-quality digital audio data stream for bit-perfect transmission to your hi-fi system. JustBoom designed the Digi HAT to be simple to install and use. With no soldering required and all the mounting hardware...

ReSpeaker 4-Mic Array for Raspberry Pi
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Price: $34.04
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Sparkfun Item #: DEV-14645 -

"The ReSpeaker 4-Mic Array is a quad-microphone expansion board for Raspberry Pi designed for AI and voice applications. With the ReSpeaker, you will be able to build a more powerful and flexible voice project with your Raspberry Pi that integrates Amazon Alexa Voice Service, Google Assistant, and more! The ReSpeaker is developed based on the AC108 IC, a highly integrated quad-channel ADC with I2S/TDM output transition for high definition voice capture. This HAT is also equipped with LED ring,...