Model:A60 current feedback amplifier board Mono power supply voltage: one group: AC dual 25V-32V, dual 28V/300 or more is recommended/another group: single AC12V-15V (10W) Note: AC12V. Used to protect the circuit. Output power: 200W 8Ω 300W 4Ω Speaker impedance: 4-8Ω Size:195x78x45MM Using 2SA1943/2SC5200 MJE15034 MJE15035 The capacitor uses the gold-lettered NOVER audio dedicated capacitor capacity 2X10000UF-channel, using 25A and above rectifier flat bridge to strong and continuous Note:adjust the static current of the large tube to 100-300mA per tube. The board has 1 TEST point, test the voltage drop between the two ends to 20-60MV Color:As Shown Material:plastic Package Contents: 1 * A60 Amplifier Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.