1、GOOD PERFORMANCE: NE5532 preamplifier capacitor module, single power supply dual channel design, with stable performance and strong practicability. 2、PRE AMPLIFICATION: The amplification is 2 times, the 22K close to the op amp can be changed, and the resistance changes the amplification, 22K is 2 times. 3、PARAMETER RANGE: With NE5532 op amp as the core, the working voltage is DC 12-30V, and the transformer power is more than 5W, efficient and durable. 4、DURABLE MATERIAL: Made of excellent capacitor and high accuracy 5 color ring metal film resistor, the module has good stability and less interference. 5、COMPACT SIZE: Double panel design, compact structure, easy to use and good effect, low sensitivity for sound source, convenient and practical. 1 x Preamplifier Module Item Type: Preamplifier ModuleMaterial: PCBWorking Voltage: DC12-30VTransformer Power: More than 5W