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Preamplifier Booster 2.0


1. 2×1KΩ resistor 1/4W.
2. 2×10KΩ resistor 1/4W.
3. 4×100KΩ resistor 1/4W.
4. 1×680Ω resistor 1/4W.
5. 4×1N4007 Diode.
6. 2×4558D/ NE5532/ TL072 IC.
7. 2×47uF capacitor 25V.
8. 1×100uF capacitor 25V.
9. 2×2200uF capacitor 25V.
10. 7×0.1uF (104) capacitor 50V.
11. 3×3 pin connecter base 2.54 mm.
12. 1×100K Dual Channel Potentiometer.
13. 1×7812/ 7915 +V Regulator.
14. 1×7912/ 7915 -V Regulator.
15. 1×3 mm LED.

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 Preamplifier Booster

Hello guys, in this post I make a Preamplifier Booster for power amplifier. Which can deliver up to 2 Watt RMS per channel. This is a stereo preamplifier booster, so you can easily use this preamplifier booster for dual channel power amplifier. For outdoor use, you can not drive your power amplifier by a normal gain output preamplifier. It needs a high gain output preamplifier, so this preamplifier booster is perfectly tuned for outdoor use. And it helps you, to give full power of amplifier.


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 Blue 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 Preamplifier

Check Voltages - Check Audio Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect this Preamplifier Booster to amplifier.

Post a Comment


  1. please explain briefly about usage of ic2 (U2). What is the benefit for that?