The Adafruit Audio FX Sound Board is offered in two variants:
- 2217: Includes a built-in Class D stereo amplifier providing 2 x 2.2W of output audio power, capable of driving 4Ω or 8Ω speakers
- 2133: Features a non-amplified 1/8" jack to connect to headphones, a stereo, or powered speakers
Both versions of the Audio FX Sound Board include header strips. They do not include batteries, speakers, a breadboard, or tactile switches. The Sound Board can be powered from any 3V to 5V DC power source, such as a 3x "AAA" battery pack or a LiPoly battery such as part # 2124.