PA series amplifier has accumulated 10 years of amplifier design and production experience, the use of plastic pipe in Toshiba best 1943,5200 tube. Each pair of tube power up to 150W. PA Series amplifiers sophisticated, beautiful structure, power output strong, dynamic big, full sound, full of intensity, sound elegant, sophisticated electromagnetic compatibility, vibration, and drop capability; full-function digital intelligent protection circuit, output never distorted , can operate stably in the harsh environment, can be assured connected with all types of speakers, no damage worries, safe and reliable; suitable for dance theater, concert, disco, studio, advanced multi-purpose hall, concert hall, High quality power amplifier KTV rooms and other places high demands. PA series of professional power amplifier is in full view of the current variety of domestic applications for the use of amplifiers operating level requirements and operating personnel at all levels, drawing on the advantages of foreign mainstream power amplifier technology, combined with professional and technical personnel for professional power amplifier pursuit of the technology, brainstorming, using the most optimized design, with the highest level of reliability for the majority of users with the most suitable commercial requirements of sound effects. PA series of professional power amplifier using the international mainstream and H class AB amplifier with high efficiency, low heat advantage, the machine's efficiency ≥80%, at rated power, the surface temperature of the heat sink below 68 ℃, create boot automatically detect the load impedance, automatic dual soft clip limiter circuit, the amplifier and speakers more secure, excellent overheating, short circuit, UHF, RF, soft wave cut limiting protection, multiple Smart Logic Analyzing protection system to ensure that, in any case, direct output short circuit, patent protection circuitry will immediately control the output current and protect the power, to ensure that the power supply capacity with a strong overall circuit through very rigorous testing, reliability