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Your cart is empty.This super small mono amplifier is surprisingly powerful - able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficient (over 90% efficient when driving an 8ë speaker at over half a Watt) - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but we could barely tell it got hot. There's even a volume trim pot so you can adjust the volume on the board down from the default 24dB gain. This board is a welcome upgrade to basic "LM386" amps! The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the Audio- pinåÊ to ground. The output is "Bridge Tied" - that means the output pins connect directly to the speaker pins, no connection to ground. The output is a high frequency 250KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard. All the above means that you can't connect the output into another amplifier, it should drive the speakers directly. Comes with a fully assembled and tested breakout board. We also include header to plug it into a breadboard and a 3.5mm screw-terminal blocks so you can easily attach/detach your speaker. You will be ready to rock in 15 minutes! Speaker is not included, use any 4 ohm or greater impedance speaker.
Pixxelfriend
Reviewed in Germany on March 18, 2025
Ich benötigte diesen Amp für eine Phoniebox, ein kleines Projekt für meinen Sohn als Alternative zu Toniebox ich konnte dproblemlos die Lautsprecher eines alten Radios an eine Raspberry Pi anschließen.
Eric Pascual
Reviewed in France on July 11, 2024
Rien de spécial à en dire. Ca fait le job. Le réglage de volume intégré est pratique pour s'adapter au signal fourni en entrée.Donne un très bon résultat en termes de puissance acoustique lorsqu'il est associé aux petits HP elliptiques en boitier, proposés en général avec le module.Pour la petite histoire : utilisé dans un projet de "sonorisation" d'un téléphone à cadran faisant partie d'un démonstrateur pédagogique. Un microcontrôleur connecté à la fourche et au clavier du téléphone génère les diverses tonalités entendues dans le combiné lors la prise de ligne, pendant la numérotation, la recherche du correspondant, la sonnerie,... ainsi que le son de la porteuse entendu lorsque la connexion avec un serveur (ex Videotex :)) était obtenue. Le signal est ensuite amplifié par le module dont il est question ici et reproduit par un HP miniature.
Jack
Reviewed in the United States on April 17, 2024
Not much to say, it's got a job (amplify audio) and it does the job. Even came with a pin thing that I could optionally put on it to use a breadboard wire with it, didn't use it but that's pretty cool to have as an option. Also came with a little port I could attach to the speaker side, which again I didn't use but that's a cool thing to get with it
Yvan
Reviewed in Canada on July 21, 2023
This board is really small and powerful, happy with my purchase.
george r.
Reviewed in the United Kingdom on April 29, 2018
Very good for a mono amp. Fits perfectly to my project as it's size is small.
Cliente
Reviewed in Spain on November 25, 2017
Gran amplificador. No he tenido ningún problema, y no genera nada de ruido.Recomendado si quieres hacer una Game Boy Zero.
David
Reviewed in Canada on October 16, 2017
Perfect for my pi project!
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