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.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: * 3x 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 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2010-02-13 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-04-01 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-04-04 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-11-25 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-11-27 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-11-28 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-11-29 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-12-09 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2016-12-13 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2017-03-31 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2017-04-04 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2017-11-24 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2017-11-28 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2018-05-05 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2018-05-11 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2018-05-15 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2018-10-30 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2018-11-21 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2018-11-27 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2019-03-15 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2019-03-19 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2019-07-04 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2019-07-09 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2019-11-29 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2019-12-03 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2021-02-10 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2021-08-10 https://elecena.pl/product/1022037/sparkfun-audio-amplifier-kit-sta540 2022-02-22