Feature:1. Original Copper Terminal: This amplifier volume control board adopts original copper terminal, the multimeter pen can be directly inserted, the contact is excellent2. Easy to Carry: This amplifier volume control board has high accuracy, small size, which is easy to carry and store3. Good Practicability: This amplifier volume control board can adjust volume, treble, bass and volume balance4. High Quality CCL Material: This power amplifier board is made of high quality copper clad laminate material, which is durable and has long service life5. Application: This preamplifier volume control board is widely used in home theater, audio, sound speakers, amplifier, etc.Specification:Product Name: Amplifier Tone BoardMaterial: Copper Clad LaminatePower Supply Voltage: Single power supply: AC10-24V, DC12-32VWorking Current: <200maSignal Input: 300-600mvSignal to Noise Ratio: 90dbNon Linear Distortion: 0.001%Maximum Output: 100mvFrequency Response Range: 20hz-20khz.Package List:1 xAmplifier Tone BoardNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.