Import Digital Amplifier Module — Buy in Bulk from Supplier in China

The Digital Amplifier Module SL-A01 is a Class D switching amplifier designed for compact, high-efficiency audio systems. It delivers a rated output power of 50 watts per channel into 4 ohms, with a total harmonic distortion plus noise below 0.1% at 1 kHz. The module operates on a DC input voltage range of 12 to 24 volts and includes built-in over-current, over-temperature, and short-circuit protection circuits. Its PCB layout follows industry-standard audio grounding practices to minimize electromagnetic interference.

The amplifier uses surface-mount MOSFETs and low-ESR electrolytic capacitors, typical of industrial-grade audio modules. The input stage accepts both balanced XLR and unbalanced RCA signals, with a sensitivity of 0.5 volts for full output. The frequency response is 20 Hz to 20 kHz, ±0.5 dB, and the signal-to-noise ratio exceeds 95 dB. These characteristics align with standards for professional studio monitors and commercial sound installations, not consumer-grade devices.

This module is commonly integrated into live sound rigs, retail background audio systems, and home theater amplifiers by system integrators and AV installers. Buyers typically order in quantities of 50 or more for OEM embedding. Packaging is in anti-static foam trays within corrugated cardboard boxes, with each unit labeled with batch and date codes. Trade terms include FOB Shenzhen and payment via T/T, with lead time typically 10 to 15 working days after order confirmation.

Dongguan Sunlight Electronic Co., Ltd. is based in Nancheng District, Dongguan, Guangdong, and specializes in manufacturing compact audio amplifier modules for OEM integration. The company is registered as an exporter and holds a harbor-tier trust rating, indicating verified export activity. The listing confirms no factory certifications, no ISO claims, and no public client list. Response metrics are not available, suggesting limited active communication channels.

The supplier does not state any history, workforce size, or annual turnover. It is not listed as a manufacturer of consumer electronics or branded products. Its focus appears limited to component-level modules like the SL-A01, with no evidence of in-house R&D or testing labs. Buyers should verify production capacity and quality control procedures directly before placing bulk orders.