Features: Vacuum Tube #12AX7A substantially and effectively improves "Digital Sound". The sound effect of the whole system is brilliantly warm & excellent. The magnetically shielded drivers guarantee no interference with the monitor and TV screen. Unique in design on the earth; Stylish, fashionable and elegant looking makes the whole set the best fitting in any space of the modern office and home. Protected by International patents with both the appearance and acoustic designs. Volume buttons, control knobs and power switch are all placed on the front panel, which delivers the perfect convenience for adjusting the best sound effect to whatever you need. Materials used for the Amplifier are the Aluminum side plates & plastic cover. All wooden enclosures have been used for the Subwoofer and aluminum enclosures used for the satellites. The materials combination together the silver color let AN-203 look like purely hi-end, classic and modern. The Amplifier can be sold and used separately and independently. Perfect for using with any audio sources like PC,CD,DVD,MP3 Players,iPod & Game Console, etc.. Specifications: Output Power: 35W + 2 x 18W (RMS) Signal-to-Noise Rate: = 85dB(A Weighted) Frequency Response: Subwoofer: 50Hz-150Hz Satellite: 150Hz-20KHz Tube model: 12Ax7A x 1 Input Sockets: Optical x 1 set, Coaxial x 1 set, RCA x 1 set Control Knobs: Power, Mute & Input Sources Indication Lights: Power, Mute & Input Sources Volume Controls: Bass & Treble With Earphone Output Woofer driver unit: 6.5?(inch), magnetically shielded Satellite driver unit: 3", magnetically shielded Impedance: Subwoofer: 8 O Satellite: 6 O Package Dimensions: 44.5 x 35 x 36 cm Gross Weight: approx. 12Kgs Carton size: 910x380x390mm Packing: 2sets/CTN Qty/20 FCL: 432sets Qty/40 FCL: 892sets Qty/40 HQ: 1046sets Min Order Quantity: 1x20 FCL