Lingjie Pro Audio has recently launched the E-series professional power amplifier, which is the most cost-effective entry-level choice for small and medium-sized sound reinforcement applications, with high-quality toroidal transformers. it is easy to be operated, stable in operation, highly cost-effective, and widely used, It has a very large dynamic sound characteristic that presents a very wide frequency response for the listener. E series amplifier is specifically designed for karaoke rooms, speech reinforcement, small and medium-sized performances, conference room lectures and other occasions.