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Description: This is a stereo amplifier kit designed to make use of the STA540 power amplifier IC. Once this kit is completed you have a fully functional, two-channel audio amplifier, complete with a standby switch, volume control and indicator LEDs. The kit also includes a 6400BG heatsink for the STA540 to dissipate any damaging heat.

In this kit, the STA540 is configured as a dual bridge amplifier capable of delivering up to 2x 38W (4Ω at 18V). Power supplied to the kit directly powers the STA540 and should be within 8 to 22V.

This kit comes as a bag of parts, you’ll need to solder everything to the PCB. All components are through-hole, so it shouldn’t be too difficult; but this kit is a bit more complex than our other through-hole kits.

Kit Includes:

• 1x STA540 Audio Amplifier Kit PCB
• 1x STA540 Dual/Quad Power Amplifier
• 1x 6400BG Heatsink
• 1x LM358 Op Amp
• 3x LED - Basic Red
• 1x SPDT Mini Power Switch
• Resistors:
  • 5x 10K Ohm
  • 3x 1.0K Ohm
  • 2x 47k Ohm
  • 2x 100k Ohm
  • 2x 10k Giant Trimpot
• Capacitors:
  • 1x 0.1uF-50V-20%
  • 1x 100uF - 25V
  • 4x 0.47uF-25V
  • 2x 10pF - 200V - 5%
  • 3x 1uF - 50V - -20,+80%
  • 1x 1000uF/25V
• 5x 2-Pin Screw Terminal - 3.5mm
• 4x Nylon Round Female Standoff
• 5x Phillips Screw with 4-40 Thread
• 1x #4-40 Hex Nut

Documents:

• Schematic
• Eagle Files
• Assembly Instructions
• GitHub