Edifier R980T Powered 2.0 Bookshelf Speakers - Studio-Quality Sound with Dual RCA Input Suitable for Desktops, Laptops, TV, Record Players and More Suitable for desktops, laptops, TV, record players and much more No need for amplifier or receiver just plug into source and play Flared bass reflex port enhances overall bass sound Specifications TOTAL POWER OUTPUT: RMS 12W × 2 THD + N: 10% SIGNAL-TO-NOISE RATIO: ≥85dBA DISTORTION: ≤0.5% INPUT TYPE: Dual RCA input (RCA - RCA and RCA to AUX) FREQUENCY RESPONSE: 70 HZ-20 kHz +/-9db INPUT SENSITIVITY: PC: 700±50mV AUX: 550±50mV (THD + N=1%) BASS UNIT: 4 inch (106mm), 6Ω TWEETER UNIT: Φ13mm silk domed tweeter, 4Ω DIMENSION: 140(W) × 226(H)× 197(D)mm