Uses TPA3116 Electrolytic capacitors use high-quality capacitors Resistors use high-precision chip resistors for a good signal-to-noise ratio for the entire unit PCB uses 1.6mm thick double-sided board, 2.0 ounces copper thickness, tin-spraying full process for reliable performance with high and low currents Made of high-quality materials, sturdy and durable Material: PCB Color: As Shown Voltage: DC 24V 10A Potentiometer distance: 25MM - 25MM - 25MM - 25MM Input signal: 2.0 stereo Output: 100W x 2 + 50W x 4 (Due to different batches, product parts and printed text may vary slightly, but will not affect performance) Package Contents: 1 x Amplifier Board Only the above package content is included; other products are not included Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement error allowed is +/- 1-3cm.