12V 5A switching power supply : ID 352 : $24.95 : Adafruit

Analog Control, Adafruit 20W Stereo Audio Amplifier - MAX9744

Adjustable Power Supply w/ 2.1mm / 5.5mm DC - 3V to 24V at 2 Amp : ID 5130 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits

12V 5A LED Switching Power Supply_Grandly Dragon Tech Limited

12V 5A switching power supply : ID 352 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Stereo 20W Class D Audio Amplifier - MAX9744 : ID 1752 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits

12V 5A switching power supply : ID 352 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits

12V 5A switching power supply : ID 352 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Brass Liquid Solenoid Valve - 12V - 1/2 NPS : ID 996 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits

5V 2.5A Switching Power Supply with 20AWG MicroUSB Cable : ID 1995 : $8.25 : Adafruit Industries, Unique & fun DIY electronics and kits

12V 5A switching power supply : ID 352 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Build18

Compact Switching Power Supply - Selectable Output 3-12VDC : ID 1448 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits

12V DC 1000mA (1A) regulated switching power adapter - UL listed : ID 798 : $8.95 : Adafruit Industries, Unique & fun DIY electronics and kits

12V 5A Switching Power Supply - UL Approved