1969M Power Amplifier Board Single Power Dual Channel PCB Bare Board Field Effect Board

• Supply voltage:
  Small tube SSF7509 version; single DC 12V-30V power supply. The current is adjustable from 10-200MA, and the sound of a small current is good. It is recommended that the quiescent current be adjusted to about 30 mA.
  Large tube IRF250 version; single DC 18V-60V power supply. The current is adjustable from 10-200MA, and the sound is very good with a small current. It is recommended that the quiescent current be adjusted to about 30 mA.
  Output power per channel:
  The square of the power supply voltage/8/speaker impedance (for example: the power supply is DC single 27V, the output power=27*27/8/speaker impedance 8Ω=11.39W)
  Frequency range: 20-20000HZ
  PCB size: 100*50mm, thickness 1.6mm double-sided wiring board
  If the power supply exceeds 50V, please replace the output electrolytic capacitor by yourself. The circuit board is equipped with a withstand voltage of 25V3300UF, and the output capacitor withstand voltage is half of the power supply.