The EasyBuzz Board enables your development system to emit audio signals. It contains a piezo speaker capable of playing sound frequencies in the range between 20Hz and 20kHz. There is also an on-board DIP switch used to connfigure board connections.
The Microphone AMP Board enables you to add a power amplifier with microphone to your applications. There is an on-board Audio Power Amplifier LM4864 and microphone that can be connected to your prototype device via an on-board screw terminal.