Company Advantages1. The entire manufacturing process of KaiXu pa amplifiers in monitored in real-time. Its high-quality amplifier tubes make the sound vibrant and dynamic
2. The reliability of this product guarantees a consistent performance throughout the lifetime and ultimately ensures the total cost of ownership is as low as possible. With CE certification, it produces no harmful radiation effect for users
3. Guangzhou KAIXU Audio Equipment Co., Ltd is superior to other companies in pa amplifier field in terms of scale, financial strength, R&D capability and management level. The product is widely applied in KTV and multimedia halls
4. With big capacity for sound amplifier, Guangzhou KAIXU Audio Equipment Co., Ltd can make timely delivery. It can amplify any types of audio including music and vocals




Product Details
NO.1
High Quality Capacitance
The power amplifier uses a large capacity to ensure sufficient energy during high power operation,high quality and long life.
NO.2
TOSHIBA Powerful Amplifier Tubes
High Performance and high power amplifer tube makes the voice vibrant and dynamic.
NO.3
Pure Aluminum Heat Sink
Large aluminum heat sink can effectively transfer the heat generated by the power amplifier in time,and the heat dissipation is fast and the effect is good.
NO.4
Excellent Cooling Fan
Ensure that the heat is dissipated and that the amplifier is cooled to prevent if from overheating.
Product Feature

PA1.3 Series is a high power, clear sound and low bass booster for subs.A new class AB desigin,through a bridge mode.lift GND even it was bridge.
Stable performance /precise workmanship. specialized system protection circuit, comprehensive safe,reliable & accurate such as short circuit protect,over load protect,DC protect(inrush audio peak) limiter soft start,High temp protect,HF protect, Back-EMF protect etc.
Product Parameter
Model | PA1.3 |
damping factor | ≥620 |
frequency response | 20HZ-20KHZ,±0.1dB |
THD+N | ≤0.01%,1/3Rate Power@8Ω1KHZ |
IMD | ≤0.01%,1/3Rate Power@8Ω |
Input sensitivity | 0.775V\1.0V\1.55V |
Input Impedance | 10KΩ/20KΩ(Unbalance/Balance) |
input CMRR | ≤75dB |
Cross talk | ≤70dB |
LED Indicator | SIGNAL,PROTECT,ACTIVE,CLIP/LIMITING |
Main power supply | 230V@50HZ,FUSE:T25A |
power consumption | 4400W |
q’ty20”,40”,40”HC(pcs) | 400/800/970 |
Certificate
Packing & Shipping
We support both OEM & ODM packaging. Our normally delivery method are by the sea, by air, by international express (DHL, UPS, TNT, FedEx)

Company Features1. Guangzhou KAIXU Audio Equipment Co., Ltd has become one of the world's leading pa amplifier suppliers after beating many competitors.
2. With the support of advanced manufacturing technique, our sound amplifier is of high performance and finest quality.
3. It proves to be right that a good service will do a great help to the development of KaiXu. Get info!