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LM3886 IC HI-FI Stereo Amplifier


1. 2×LM3886 IC.
2. 6×22KΩ resistor 1/4W.
3. 4×100KΩ resistor 1/4W.
4. 9×1KΩ resistor 1/4W.
5. 2×2.2KΩ resistor 1/4W.
6. 2×100Ω resistor 1W.
7. 2×100Ω resistor 2W.
8. 2×22uF capacitor 25V.
9. 4×2.2uF capacitor 25V.
10. 2×47uF capacitor 25V.
11. 2×10000uF capacitor 50V.
12. 1×3 pin connecter base 2.54 mm.
13. 1×100K Dual Channel Potentiometer.
14. 1×7812/ 7815 +V Regulator.
15. 1×7912/ 7915 -V Regulator.
16. 4×3 mm Led.
17. 1×GBJ2510 Bridge Rectifier.
18. 2×2 Pin Screw Terminal.
19. 1×TL072/ NE5535/ 4558D IC.
20. 3×6.3 mm Vertical PCB Terminal.
21. 2×5uH coil (18 gauge copper wire).

License:- ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.

PCB Layout & Schematic:-

How I Make This Amplifier

Hello guys, in this post I make Stereo amplifier, which can deliver up to 68 watt output per channel at 4Ω. For this amplifier I use LM3886 IC. This IC is especially designed for active studio monitor, for it's low noise distortion. And this IC best for singers. This IC have in-built short circuit protection and over voltage protection, So for reason tis IC is little bit expensive than other IC. I designed this PCB based on this IC, for make this amplifier you can download the required files.


For designing my PCB, I used EasyEda online software. Then I export the Gerber file (which you can download). And then I go to for manufacturing my PCB. PCBWay are the largest PCB manufacturer in China. They offer Standard PCB, Advanced PCB, Rigid-Flex PCB, SMD-Stencil and PCB Assembly Service. Here you get, 100x100mm 2 Layer PCB only at $5, And processing time within 24 hour. And they distribute, worldwide. The more you order, the less price you have to pay.

You just need to upload the Gerber File, and select the quantity, color, silkscreen, thickness etc. Then select your country, and shipping method and then Pay. PCBWay will deliver your PCB within 7-10 days.

After 7 days I have received my PCB. You can see the PCB quality, it's awesome. I have ordered Matte Black color PCB. But you can choose your PCB color. PCBWay provide total 9 color solder mask - Green, Blue, Red, Purple, Black, White, Yellow, Matte Black and Matte Green. On PCBWay you can get 100x100mm 2 Layer PCB only at $5. Maximum size PCB you can get 500x1100mm. And maximum Layer is up to 14 Layers. And If you order PCB first time at PCBWay, then you get a $5 discount coupon. So upload your Gerber today and get best quality PCB.

How To Test This Amplifier

Check Voltages - Check Audio Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect preamplifier to input and connect speaker to output.

Power Supply:- For get best performance of this amplifier, you use 18-0-18V 5A-8A Transformer (Don't increase voltage).

Post a Comment


  1. very good video!
    if possible please make this for me, i will pay all charges incl. postage.

  2. Sir, how i can make it as a mono audio circuit?

  3. I can't make the purchase of the layout, I'm Brazilian and I would like to make the acquisition.