1、Original Copper Terminal: This amplifier volume control board adopts original copper terminal, the multimeter pen can be directly inserted, the contact is excellent 2、Easy to Carry: This amplifier volume control board has high accuracy, small size, which is easy to carry and store 3、Good Practicability: This amplifier volume control board can adjust volume, treble, bass and volume balance 4、High Quality CCL Material: This power amplifier board is made of high quality copper clad laminate material, which is durable and has long service life 5、Application: This preamplifier volume control board is widely used in home theater, audio, sound speakers, amplifier, etc.<div class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text">Product Name: Amplifier&nbsp;Tone&nbsp;BoardMaterial: Copper Clad LaminatePower Supply Voltage: Single power supply: AC10-24V, DC12-32VWorking Current: &lt;200maSignal Input: 300-600mvSignal to Noise Ratio: 90dbNon Linear Distortion: 0.001%Maximum Output: 100mvFrequency Response Range: 20hz-20khz<style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style></div>1 xAmplifier&nbsp;Tone&nbsp;Board