High Power Class D Audio Amplifier Kit


DIY kit uses OEM Texas Instruments IC
Choose either the TPA3116D2 - 50 watts x 2
or the TPA3156D2 - 70 watts x 2
Easy to assemble kit using through-hole components
Amplifier IC is presoldered on PC board
2.3" x 4.4" footprint
Operates on 5-26 VDC
Volume control
RCA input jacks
Screw terminal power and speaker connections
Easily bridgeable by changing jumpers
Oversize heatsink included

ROHS 100 Watt Amplifier Kit KAA10021 Parts 100 Watt Amplifier Kit KAA10021 Pcb
Click to enlarge

An awesome digital audio amplifier, with a very efficient design. The IC comes from Texas Instruments and features automatic thermal and short circuit protection. The hardest work is done because the surface mount amplifier IC is pre-soldered! Jumper points provided on the board for easy selection of stereo or bridged operation. An oversized heatsink means little chance for over heating and will only be warm when cranking up the tunes. Wide supply voltage operation and yes it operates on as little as 5 VOLTS! of course you will not achieve full power at lower voltages, rated power is acheived at 24 volts. Modifying this amp with your own unique parts is easy because the board uses standard through hole components. You won't be disappointed by the power, efficiency and frequency response of this amp!

What’s Included in the kit:

  • 1 - PC Board with Power Amp IC presoldered
  • 2 - 1000ufd Electrolytic Capacitors
  • 1 - 10ufd 35v Electrolytic Capacitor
  • 4 - 10ufd 10v Ceramic Capacitors
  • 1 - 1ufd 50v Ceramic Capacitor
  • 4 - 0.68ufd 50v Ceramic Capacitors
  • 4 - 0.22ufd 50v Ceramic Capacitors
  • 2 - 0.1ufd 50v Ceramic Capacitors
  • 2 - 100k ¼ Watt Resistors
  • 1 - 75k ¼ Watt Resistor
  • 3 - 47k ¼ Watt Resistors
  • 1 - 39k ¼ Watt Resistor
  • 1 - 20k ¼ Watt Resistor
  • 1 - 5.6k ¼ Watt Resistor
  • 2 - 4.7k ¼ Watt Resistors
  • 1 - 10k Variable Resistor (audio taper)
  • 4 - 10uh Inductors
  • 2 - LED's
  • 2 - Spacers for LED's
  • 3 - 2 Position Terminal Blocks
  • 2 - Phono Jacks
  • 1 - Heatsink
  • 1 - Hardware for mounting heatsink
  • 4 - PCB Standoffs

*** Assembly manual is not shipped with kits - must use the on-line manual ***

What you will need:

  • Good quality soldering iron 25 – 40 watt
  • Solder tip cleaning sponge
  • Rosin core or no clean solder
  • Diagonal wire cutter

KAA10021
Select Option
100 Watt Amplifier Kit KAA10021 tpa3116 50 watt x 2 Class-D Audio Amplifier

Assembly Manual in PDF format.

TPA3116 Data Sheet in PDF format.
$31.95 each + $3.50 shipping for USA addresses only, for addresses outside USA email for shipping charges.

KAA14021
Select Option
140 Watt Amplifier Kit KAA14021 tpa3156 70 watt x 2 Class-D Audio Amplifier

Assembly Manual in PDF format.

TPA3156 Data Sheet in PDF format.
$33.95 each + $3.50 shipping for USA addresses only, for addresses outside USA email for shipping charges.