The MA-7A Stereo Reference Monitors are the ideal solution for musicians and computer users who demand the best audio quality possible in a very confined space. The MA-7As are extraordinarily small reference speakers, but are capable of producing incredible sound, uncommon for speakers of such a compact size. These speakers are perfect for desktop use, where space is of the utmost consideration. Headphones Jack (Stereo mini type) Magnetically-shielded Sub Woofer Output for Extended Low Frequencies Speaker Unit 9 cm (3-9/16) full range unit (Magnetically-Shielded) Enclosure 1-way Full-range Bass-reflex type (Wooden Cabinet) Frequency Range 90 Hz to 20 kHz Rated Power Output 14 W (7 W + 7 W) Nominal Input Level Line 1 - -10 dBu, Line 2 - -10 dBu Input Impedance 20 k ohms Connectors R Channel Front. Phones Jack (stereo mini phone type), Line In Jack (L, R) (Stereo mini phone type); R Channel Rear. Line 1 Jack (stereo mini phone type), Line 2 Jacks (L, R) (RCA phono type), L Channel Output Jack (RCA phono type), Sub-Woofer Output Jack (RCA phono type) Power Supply AC 117 V, AC 220 V, AC 230 V or AC 240 V - 50/60 Hz Current Consumption 22 W Accessories - Owner's Manual, Speaker Cable (RCA phono type), Power Cord, 8 rubber feet, Conversion Cable (Stereo mini phone type to RCA phono type) Unit Dimensions - 5-3/4 W x 7-7/16 D x 8-/12 H, Weight - 7lbs. 8oz. (right); 5-/34 W x 7-11/16 D x 8-1/2 H, Weight - 4lbs. (left)