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).

This amplifier is perfect for portable and battery-powered projects. It has built in thermal and over-current protection,
but you really have to drive it hard before it even gets warm! This board is a welcome upgrade to basic "LM386" amps!

Specifications:

1. Output Power: 3.7W at 3Ω, 10% THD, 1.7W at 8Ω, 10% THD, with 5V Supply Passes EMI limit unfiltered with up to 12 inches (30 cm) of speaker cable.
2. High 83dB PSRR at 217Hz.
3. Spread-Spectrum Modulation and Active Emissions Limiting.
4. Differential Inputs.
5. Five pin-selectable gains: 6dB, 9dB, 12dB, 15dB and 18dB. Select with a jumper or by setting the G and G'
   breakout pins (see schematic for breakout board showing gain pin settings (https://adafru.it/aWT) for details)
   Excellent click-and-pop suppression.
6. Thermal and short-circuit/over-current protection.
7. Low current draw: 2mA quiescent and 10uA in shutdown mode

Datasheet: Manual