LG SH2, 2.1 channels, 100 W, Dolby Digital, Bass, 50 W, Active subwoofer LG SH2. Audio output channels: 2.1 channels, RMS rated power: 100 W, Audio decoders: Dolby Digital. Soundbar speaker RMS power: 50 W. Subwoofer type: Active subwoofer, Subwoofer connectivity: Wired, Subwoofer RMS power: 50 W. Product color: Black, Audio formats supported: LPCM. Connectivity technology: Wired & Wireless