Specifications Product Name HiFi Power Amplifier Pre tuning BoardPower Supply Voltage AC10 24V DC12 32VWorking Current 200mASignal Input 300 600MVSignal to Noise Ratio 90dBNon linear Distortion 0 001 Maximum Output 100mvFrequency Response Range 20Hz 20kHzDimensions 100 x 50MMFeatures 1 High Fidelity Sound Superior Signal to Noise Ratio of 90dB ensures clear and powerful audio output 2 Wide Compatibility Supports both AC 10 24V and DC 12 32V power sources for versatile use 3 Precision Performance Ultra low distortion rate of 0 001 preserves the original audio quality 4 Comprehensive Frequency Response Covers a full range from 20Hz to 20kHz for rich audio reproduction 5 Compact Design Convenient size of 100 x 50MM suitable for DIY audio amplifier projects Package Includes 1 x HiFi Power Amplifier Pre tuning Board