<b>Description: </b><br> Single-channel digital power amplifier Board PBTL<br> Amplifier Chip: TPA3110<br> Working voltage: DC 8~26V<br> Output power: 1X30W (Mono, if want stereo, request two)<br> Applicable Speaker Impedance: 8 ohm best (4 ohm 6 ohms can also be used)<br> <b>Package Included:</b><br> 2* DC 8-26V TPA3110 PBTL Mono Digital Amplifier Board