Datasheet

Features:
I2S audio DAC with 3W mono amplifier (MAX98357A)
Default output of 0.45W/26.5dB
8Ω 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)
Kit includes:
Speaker pHAT
8Ω 2W Mylar speaker
2x20 pin female header
50 mm 24AWG bare wire
4x M2x8 black nylon bolts
8x M2 black nylon nuts
Note: Pi Zero not included!
Assembled Dimensions: 65.2mm x 30mm x 11.4mm / 2.6" x 1.2" x
0.45"
Assembled Weight: 15.4g / 0.55oz
Notes
The DAC sums the two audio channels to mono, rather than just
outputting one channel or the other, meaning that you get both
channels of audio out of the single speaker
The dimensions of the speaker: H 6mm x L 40mm x 20mm.
Speaker pHAT won't fit on top of a Pibow Coupé or Pibow
Zero due to the height of the speaker.
It's important that you use four of the included eight nuts as
spacers to space the speaker slightly away from the PCB. Not
doing this, and having the speaker cone touching the PCB, can
result in sound degradation and even damage to the speaker.