Audio Project Amplifier Speaker Loudspeaker Kit
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$5 cheap headphone amp / stereo buffer board - Click HERE for Original Thread
raidfibre
About 2 years ago I told my brother in law (who is not an engineer) that I'd help him build a headphone amplifier.
Well, we all know how helping relatives goes. It's usually all talk. And it was, until I decided that I really ought to get something done so he doesn't dislike me over a headphone amp. I drew some boards in Eagle and had them made. The board is very simple, I'm sure anyone could solder it. If I was making it for myself I would have made it half the size and used all SMT components but it's a lot cheaper this way. It's a single sided through-hole wide-track board with two jumpers. It honestly doesn't get much simpler than this board.

Boards are $5 each and $3 shipping for however many boards you want via USPS inside the USA. If there is considerable interest (commitment) I can put together part kits. I have 18 boards to sell. Please PM me if interested, and please ask if you have questions.
If you want more than a couple boards we can work out a price.




Tube_Dude
Hi

The Op-Amp in the schematic is wrong.

You must connect the inverting input to the junction point of R8 and R7 , and vice versa ... ;)
raidfibre
how in the hell did I do that?!

well it looks as though I've made a comparator board. ****.
Nordic
lol, next time, build a prototype first.
raidfibre
Well it's through hole so you can just swap the leads going to pins 2 and 3. I'll sell them for $2 a piece.
jaste
Hi, what would the shipping be for Sweden? And are you intrested in sending a board overseas?
raidfibre
The shipping would presumably be no more expensive than inside the USA. The boards are small and light.
jaste
What are the dimensions of the board?
raidfibre
It is less than 4cm x 2cm. I will get the exact dimensions when I go home later today.

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