Stereo 3.7W Class D Audio Amplifier - MAX98306 : ID 987 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Adafruit Industries, Unique & fun DIY electronics and kits Stereo 3.7W Class D Audio Amplifier - MAX98306 : ID 987 - This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 3.7W channels into 3 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, its incredibly efficient (over 90% efficient when driving
This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 3.7W channels into 3 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, its incredibly efficient (over 90% efficient when driving an 8Ω speaker at over 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. This board is a welcome upgrade to basic "LM386" amps!The inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the R- and L- to ground. The outputs are "Bridge Tied" - that means they connect directly to the outputs, no connection to ground. The output is a 360KHz 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 with 1.0uF input capacitors. We also include header to plug it into a breadboard, 3.5mm screw-terminal blocks so you can easily attach/detach your speakers, and a 2x4 header + jumper to change the amplifier gain on the fly. You will be ready to rock in 15 minutes! Speakers are not included, use any 3ohm or greater impedance speakers.

Bone Conductor Transducer with Wires - 8 Ohm 1 Watt : ID 1674 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Adafruit Stereo 3.7W Class D Audio Amplifier

Stereo 3.7W Class D Audio Amplifier - MAX98306 : ID 987 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Printable catalog (PDF) - Adafruit

Adafruit Stereo 3.7W Class D Audio Amplifier

Drown out the voices in your head with a bone conduction transducer! This incredible speaker does not have a moving cone like most speakers you've

Bone Conductor Transducer with Wires - 8 Ohm 1 Watt

Stereo 3.7W Class D Audio Amplifier - MAX98306 : ID 987 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Bone Conductor Transducer with Wires - 8 Ohm 1 Watt : ID 1674 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Stereo 3.7W Class D Audio Amplifier - MAX98306 : ID 987 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Catalog Adafruit Electronica

Stereo 3.7W Class D Audio Amplifier - MAX98306 : ID 987 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Bone Conductor Transducer with Wires - 8 Ohm 1 Watt : ID 1674 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Catalog Adafruit Electronica