Built-in 4 partitions, support U disk, each partition volume independent regulation, AUX input 2 road, road 3 MIC input, 1 road AUX output; MIC1 priority function; Constant voltage 70 v to 100 v output and 4 ~ 16 European resistance output; Each input channel independent volume control, high and low sounds music control; Smart short-circuit overheating protection (2 u chassis) technical parameters are as follows:

4-16 Ω output way: constant resistance, constant voltage 70 v, 100 v;
Line output: 600 Ω / 300 mv (0 db);
Input: 3/600 Ω MIC1, 2, and 2.0 MV, imbalance;
K Ω AUX1, 2/10, 100 mv, imbalance;
Frequency response: 100 hz ~ 16 KHZ.
1 KHZ harmonic distortion: < 0.1%;
Signal-to-noise ratio: the MIC1, 2 66 db, AUX1, 2 70 db;
Tone control: Bass, plus or minus 10 db at 100 hz Treble: plus or minus 10 db at 10 KHZ;
Protection: boot protection, dc protection, short circuit protection;

Power: 60 w / 100 w / 160 w / 180 w / 250 w / 350 w / 500 w / 700 w
Mute: MIC1;
Voltage: AC220V / 50 hz;
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