Features: 

1) Full-balanced Hi-Fi amplifier circuitry

2) Adjustable delay time: 150ms, 175ms and 200ms

3) Music adjustment for bass and treble: 100Hz ±10dB;

    10kHz ±10dB

4) Microphone adjustment for bass, mediant and treble: 100Hz, 

    500Hz, 10kHz; (±10dB)

5) THD: ≤0.03%

6) S/N: ≥90dB (A weighted)

Features: 

1) High quality digital karaoke function

2) Signal sources search automatically when power-on

3) Adjustable microphone signal and strong harmonic drive

4) 8-level time delay, 25ms-200ms adjustable

5) Undistorted dynamic range compression

6) High fidelity (Hi-Fi) playback function

7) Perfect protection function

8) Separate adjustments for microphone and music channels

9) Harmonic distortion: <0.2%

10) Signal-to-noise ratio: >80dB, A weighted (minimum volume of microphone)

11) Frequency response (music channel): 20Hz-20kHz (+1/-3 dB)

12) Delayed time: 25ms-200ms

13) Echo intensity: >10 times (-60dB)

14) Input impedance: 

     a) Microphone: 600 ohms (imbalance)

     b) Music: 10,000 ohms (imbalance)

15) Line out impedance: 1Kohms

16) Microphone tone adjustment: 

     a) Treble: 10kHz ±6dB

     b) Middle: 1kHz ±6dB

     c) Bass: 100Hz &plus6dB

17) Music tone adjustment: 

     a) Treble: 10kHz ±10dB

     b) Bass: 100Hz ±10dB

18) Microphone gain: >65dB

19) Music passageway gain: 

     a) Line output: >8dB

     b) Power amplifier output: >36dB

20) Source selection: 

     a) Audio: 2 groups

     b) Video: 2 groups

21) Power output: 2 x 180W (4 ohms)

22) Voltage of power supply: 220V/50Hz ±2Hz

23) Dimensions: 515mm x 415mm x 225mm

24) Gross weight: 10kg

25) Net weight: 9kg

Features: 

1) Two independent digital reverberation systems, offering 2-channel and 

    5.1-channel inputs, and 2.1-channel, 3.1-channel and 4.1-channel outputs

2) Two sets of independent music adjustments for bass and treble-100Hz 

    ±10dB;10kHz ±10db

3) Microphone adjustment for bass, mediant and treble--100Hz; 1kHz; 

    10kHz; (±10dB)

4) S/N: ≥95dB (A weighted)

5) THD: ≤0.02%

6) Output power: 4 x 100W, 2 x 100W + 300W, 300W x 2, (8 ohms)