K7540 four channels of digital power amplifier

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    K7540 four channels of digital power amplifier

    Using self-developed large-capacity switching power supply digital amplifier. Compared with the open-loop or semi-

    closed-loop control methods, the composite feedback control can greatly reduce the power supply fluctuation. the 

    effects of the error and non-ideality of the switching device and the LC filter,that makes the key technical indicators 

    such as distortion, frequency response, and damping coefficient have been greatly improved, and the sense of hearing 

    has been perfect. The switching power supply according to the operating characteristics of the audio amplifier to 

    optimized the design ,strong power, quick response, and the interference to the audio signal is small. In addition to 

    multiple protection circuits such as short-circuit, over-current, over-temperature, ultra-high frequency, etc., also given 

    to humanized design, convenient operation, and prevention of possible mis-operation. 1U height 19 inches standard 

    rack size, small size, light weight, flow and fixed installation are suitable. There are two modes of operation: STEREO 

    (A and B in this mode, C and D work independently), PARALLEL (in this mode, the device outputs a mono channel 

    source via a dual-amplifier system).

    K7540 four channels of digital power amplifier


    Technical parameters

    Output (8Ω、1kHz):4x300W

    Frequency Response:20Hz~20kHz ±3dB

    Total Distortion:1%(8Ω、350W)

    Input Sensitivity:+4dB * (1.23V)

    Input Impedance:10kΩ(Balanced)

    S/N Ratio:≥80dB

    Dimensions:483x45x500(mm)

    Net Weight:5.40kg


    K7540 four channels of digital power amplifier dimensions


    K7540 four channels of digital power amplifier