Does the humanized design, bring your own two hanging hole horizontal, vertical installation, convenient installation;

Does the high quality engineering plastic injection molding, durable, not deformation, not faded, black and white optional;

Does configuration 5 inch high-fidelity bass unit and 1.5 inch tweeters, beautiful timbre, phonetic reduction degree is high;

Does the built-in class D 2 x 20 w power amplifier circuit, the sound quality is exquisite, strong power;

Does high fidelity stereo design, professional audio CD level;

Does the flexible connection and quick installation, easy to use;

Does use AC110V ~ AC220V wide voltage power supply;

Does have 1 microphone stereo line input, 1 road input, 1 100 v constant pressure signals input;

Does the input channels are sealed potentiometer volume knob;

Does very applicable school multimedia classrooms, meeting rooms and other places;

Does the output power: 20 w x 2 @ 8 Ω;

Does the input sensitivity: 0.5 V.

Does the output frequency response: 60 hz - 18 KHZ / 1 w, plus or minus 0.5 dB;

Does harmonic distortion: 20 hz - 20 KHZ / 1 w, 0.05%;

Does the damping coefficient: > 200 @ 8 Ω / 400 hz;

Does conversion rate: 30 v/US;

Does the channel separating degree: > 75 db (no weight);

Does signal-to-noise ratio: > 95 db (no weight);

Does amplifier type: class D digital power amplifier;

Does indicate type: power, channel signal;

Does protection type: over temperature protection, overload protection, mute switch machine;

Does the input types: AV lotus, 6.5 socket, plug-in terminals;

Does apply to power: AC110V - 240 - v / 50 hz - 60 hz;

Does the product size: 170 * 185 * 250 mm;

Does the net weight: 4.7 Kg (1);