20-3000-1325 - Sound board with 1 speaker support
20-3000-1325C2 - Sound board with 2 speaker support
20-3000-1325C3 - Sound board with 3 speaker support
20-3000-1325C4 - Sound board with 4 speaker support
20-3000-1360 - 4 channel sound board with touch interface
20-3000-1361 - 5 channel sound board with touch interface
Micro-SD supportive audio player boards with push-button connectors for audio switching.