Never hesitate to contact us once you think you have received imperfect stereo amplifier. We would appreciate much that if you provide us with the inspection report as soon as possible issued by an entrusted third party to prove the quality of the product. Then, we will verify and review every manufacturing process to find out the problems. Among the manufacturing factories, we have to admit that though we always stick to the business principle of "quality first" and ensure a high qualification ratio, we can not avoid the occurrence of some mistakes which may lead to the fact that few imperfections delivered to customers. Please understand and we will deliver you exactly the same products agreed by both parties.

With the society changing, Guangzhou Gisen Audio Equipment Factory has also been developing better to produce top 10 power amplifiers. The dsp amplifier series has become a hot product of Gisen Audio. The tests for Gisen Audio 4 channel dsp amplifier cover a wide range. It has to undergo tests include raw material testing (e.g. glow wire test, needle flame), chemical hazards testing, and current leakage testing. The state-of-art engineering reduces signal interference effectively. This product is manufactured for long-term use. Its components are not so easy to damage over time, and do not require frequent maintenance, but can work long-term. Attention has been paid to the circuit layout for safe operation.

Wanting to be the first, our company is driven to serve customers in a responsible and shared value-creating approach.