Company Advantages1. The appearance design of KSA basic audio amplifier meets the latest demand.
2. Its quality and performance are taken into account strictly.
3. Water purity is extremely important to pharmaceutical and biochemical industries, hence, the product is very useful for these industries.
4. People can rest assured that the product does no harm to the human body because the ammonia refrigerants used release no toxic substances.




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 provides customers with high performance amplifier for sale products.
2. We are proud to have an experienced workforce. From choosing precise raw materials to executing the most efficient production processes, they have an excellent track record of quality control.
3. Our commitment to customers is to be the best, most flexible supplier, with the capability to adapt to changing market demands. We operate our business in a sustainable manner. We strictly monitor our impacts on the environment by reducing the unnecessary use of natural resources. We are active in business sustainable development. We will uphold business ethics throughout our production, such as reducing water consumption by recycling reusable water.