USB/SD preamplifier model: ABS-120U/180U/280U/380U/500U/650U Features 1. Standard 2U chassis, luxurious aluminum alloy panel, handle design, beautiful and generous 2, 3 microphone inputs); 2 line inputs (AUX1, 2); each channel can adjust the volume, 1 line auxiliary output can be connected to a power amplifier to expand power 3. The microphone MIC1 has a sound erasing function, which is convenient for inserting priority broadcasting; 4. With independent adjustment of treble (TREBLE) and bass (BASS). 5. With short circuit, overheating, overload protection circuit, sound and light alarm; 6. Two power output modes, constant voltage output 100V, 70V, constant resistance output 4-16Ω 7. Built-in MP3/SD card interface decoder, compatible with MP3/WAV music playback format. Adopt advanced high-efficiency power amplifier circuit, with 3 microphone inputs, 2 line inputs, 1 auxiliary output, can be inserted into U disk/SD card to play directly, no need to purchase or burn music CD, use U disk/SD card to play at any time Or changing songs is more convenient and economical. Voltage output is 70V/100V, constant resistance output is 4-16Ω, output frequency response range is 20~20KHz; each input volume can be controlled independently, with high and low volume adjustment; microphone 1 is set as the highest priority function, automatically suppressing others Input signal; the equipment is equipped with abnormal working protection and warning function, when the input signal is too large, the load is too heavy, the temperature is too high, the line is short-circuited, etc. The abnormal working protection warning function of the machine is High reliability. 2U standard chassis design, luxurious aluminum alloy panel, beautiful and generous. Practical power, stable and durable. Range of application: Where combined constant voltage power amplifiers (power amplifiers) are needed, such as schools, shopping malls, specialty stores, restaurants, etc. 240V output can be customized according to customer requirements and OEM OEM products can be provided (There are also a variety of U disk partitioned independent tuning amplifiers and audio-visual platform amplifiers for options)! |