USB Bluetooth Amplifier

● Standard 19-inch rack design, black aluminum brushed panel, laser cutting chassis, professional appearance and high grade;

● Embedded player, 2.5-inch high-brightness LCD screen, large font display of the name of the playing track, playback progress and other mode states, support U disk and TF card access playback, and provide infrared remote control for easy user operation;

● Support customized display of product LOGO and Bluetooth name;

● MP3 player, support MP3, WMA, WAV, APE, FLAC and other format decoding, high-fidelity sound quality;

● Support mobile phone Bluetooth connection, you can play programs on demand through the mobile phone player;

● The shuttle key adjusts the MP3 volume, and the screen displays the volume value intuitively;

● Four-way signal input (two-way microphone input, two-way line input);

● 1-way audio signal auxiliary output interface, can expand external power amplifier, standard lotus seat interface, easy wiring;

● Each input channel volume is adjusted independently;

● Treble and bass adjustment;

● Total volume adjustment;

● LED level display: can display output signal strength, distortion status, protection, over-temperature indication, easy to observe the working condition of the machine;

● Three-level priority circuit, MIC1 has the highest priority level, AUX1 has the second priority level, MIC2, AUX2 have the third priority level;

● AUX1 has an amplification adjustment knob, which is convenient for connecting to sound sources of different amplitudes (30mV-1200mV);

● AUX1 has a priority selection switch, ON means AUX1 has a priority function. OFF means AUX1 has no priority function;

● Excellent noise control, comparable to professional-grade amplifiers;

● Adopting the most advanced transformer design in the industry, the amplifier output will be cut off when the internal temperature of the transformer exceeds 105 degrees, which can better protect against overload;

● Adopting imported power tubes, the output power is strong; wide bandwidth, low noise, high fidelity, perfect restoration of human voice and music;

● Comprehensive protection circuit: DC protection, if there is DC voltage at the output end of the amplifier, the output will be cut off immediately to protect the speaker; short circuit protection: if the load is short-circuited, the output will be cut off immediately, and the fault will be automatically restored; thermal protection, if the temperature inside the amplifier exceeds 70℃, the power limit will be started; if it exceeds 85℃, the output will be cut off;

● High-octave bass removal circuit, using low-cut technology with tone compensation, removes ultra-low frequency components with safety hazards without losing sound quality, ensuring the safe operation of the boost system;

● Peak negative feedback protection, when the signal is distorted, impacted, or the line voltage is seriously over-voltage, it can effectively protect the amplifier;

● Independent soft start protection circuit to avoid damage to the equipment caused by large current at the moment of startup;

● The professional voltage limiting circuit can detect the output signal clipping caused by various situations such as power supply voltage reduction, overload, input signal oversize, and amplifier temperature rise, and automatically correct it to avoid output signal distortion, resulting in broken sound, and damage to the amplifier and speaker;

● Tunnel-type air duct, forced air cooling from front to back, with intelligent fan speed management function, low speed operation at room temperature, the fan speed increases when the temperature inside the amplifier exceeds 70℃, and the power limit is started. When it reaches 85℃, the fan rotates at full speed and cuts off the amplifier output, and the temperature indicator light is lit to alarm abnormally;

● Supports 1-way selectable voltage (70V/100V) or fixed resistance 4-16Ω output, so that this machine can be used as a broadcasting system and can also be used to drive professional-grade speakers;

● Professional modular circuit design to ensure reliable consistency of the product;

● High-strength thickened body to ensure that the product will not be deformed due to harsh transportation environment;

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