Speaker pHAT crams an I2S DAC and mono amplifier, a tiny 8Ohm 2W speaker, and a 10 LED bar graph all onto one teeny little pHAT. It's the neatest way to add audio to you Pi project, and its beautiful artwork evokes an 80s boombox! We can't claim audiophile sound quality, but it's perfect for fun little projects where you want to add sound output - speech, notification sounds, or light music, for example. I2S audio DAC with 3W mono amplifier (MAX98357A) Default output of 0.45W/26.5dB 8Ohm 2W Mylar speaker Routed holes to channel sound 10 bright white bar graph LEDs SN3218 LED driver chip Compatible with Raspberry Pi 3, 2, B+, A+, and Zero Female header and speaker require soldering (includes a piece of bare wire to solder the speaker)