Datasheet

We 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 (we include one) to adjust volume analog-style. Or hook it up to

your favorite microcontroller and send I2C commands to set 64-steps of volume amplification.

Some great stats about the MAX9744

Power from 4.5V-14V DC voltage

Up to 93% efficient (88-93% typical)

20mA quiescent current (or put into shutdown for 1uA quiescent)

Up to 29.5dB max gain

Use DC or AC coupled line-level input, up to 3Vpp

Filterless Spread-Spectrum Modulation Lowers

Radiated RF Emissions from Speaker Cables

20W Stereo Output (4Ω, VDD = 12V, THD+N = 10%)

Low 0.04% THD+N

Integrated Click-and-Pop Suppression

Short-Circuit and Thermal-Overload Protection

We took this lovely chip and wrapped it up into a breakout for you, with polarity-protection, jacks and terminal blocks,

i2c level shifting, and a spot to solder in a volume pot.