Trevi AVX 582 USB. System type: 2.0 system, Recommended usage: universal, Speaker placement: Tabletop/bookshelf. RMS rated power: 90 W, Frequency range: 50 - 20000 Hz, Signal-to-Noise Ratio (SNR): 65 dB. Connectivity technology: Wired. Housing material: MDF. Colour of product: Black