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.
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.
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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 ... 😉
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 ... 😉
$2 boards now...
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.
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.
The shipping would presumably be no more expensive than inside the USA. The boards are small and light.
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