{"product_id":"adafruit-stereo-20w-class-d-audio-amplifier-max9744","title":"Adafruit Stereo 20W Class D Audio Amplifier - MAX9744","description":"\u003cp\u003ePump up the volume with this 20W stereo amplifier! This slim little board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each.\u003c\/p\u003e\n\u003cp\u003ePower it with 5-12VDC using the onboard DC power jack and plug stereo line level into the 3.5mm stereo headphone jack and jam out with ease. Since it's class D, its completely cool-running, no heat sinks are required and it's extremely efficient - up to 93% efficiency makes it great for portable or battery powered rigs.\u003c\/p\u003e\n\u003cp\u003eWe like the MAX9744 amplifier at the heart of this board because its very easy to use, but it also has both analog and digital volume control capability. Use a single 1KΩ pot (included) to adjust volume analog-style. Or hook it up to your favorite microcontroller and send I2C commands to set 64-steps of volume amplification.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower from 4.5V-14V DC voltage\u003c\/li\u003e\n\u003cli\u003eUp to 93% efficient (88-93% typical)\u003c\/li\u003e\n\u003cli\u003e20mA quiescent current (or put into shutdown for 1uA quiescent)\u003c\/li\u003e\n\u003cli\u003eUp to 29.5dB max gain\u003c\/li\u003e\n\u003cli\u003eUse DC or AC coupled line-level input, up to 3Vpp\u003c\/li\u003e\n\u003cli\u003eFilterless Spread-Spectrum Modulation Lowers Radiated RF Emissions from Speaker Cables\u003c\/li\u003e\n\u003cli\u003e20W Stereo Output (4Ω, VDD = 12V, THD+N = 10%)\u003c\/li\u003e\n\u003cli\u003eLow 0.04% THD+N\u003c\/li\u003e\n\u003cli\u003eIntegrated Click-and-Pop Suppression\u003c\/li\u003e\n\u003cli\u003eShort-Circuit and Thermal-Overload Protection\u003c\/li\u003e\n\u003cli\u003eIncludes polarity-protection, jacks and terminal blocks, i2c level shifting, and a spot to solder in a volume pot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach order comes with one MAX9744 breakout board with all surface-mount parts fully assembled and tested. Included are 3 x 2pin and 1 x 3pin terminal blocks, a 470uF power filter capacitor and 1KΩ trim pot.\u003c\/p\u003e\n\u003cp\u003eTo use this board, a little soldering is required to attach the terminal blocks and other components, but its fairly easy and expect it should take less than 15 minutes. Check out Adafruits \u003ca href=\"http:\/\/learn.adafruit.com\/adafruit-20w-stereo-audio-amplifier-class-d-max9744\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edetailed tutorial\u003c\/a\u003e for assembly instructions and overall usage\u003c\/p\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":658832653,"sku":"ADA1752","price":19.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/1752.jpg?v=1396434419","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-stereo-20w-class-d-audio-amplifier-max9744","provider":"Pimoroni Ltd","version":"1.0","type":"link"}