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 Post subject: Guitar Headphone Amp with MP3 input
 Post Posted: Thu Mar 11, 2010 8:02 pm 
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Location: Florida USA
I have designed (with some great help and input from the guys at Dutchforce.com and DIYAudio.com) a simple guitar headphone amp with an mP3 player input. The MP3 input is stereo and the mono guitar input is split to both channels. Below is the preliminary schematic. I have bread-boarded it so I know it works. I will be making a SMD PCB and possibly a through hole version. I will post those as they are completed. It will be designed to fit in this enclosure from Radio Shack.

Image

Here are the eagle files:
Attachment:
schematic.sch

Attachment:
schematic.brd


Here is the schematic:


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 Post subject: Re: Guitar Headphone Amp with MP3 input
 Post Posted: Sat Mar 20, 2010 3:36 pm 
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Here is a picture of the almost completed amp. It is very clear, no hum or hiss that I have noticed yet. I am waiting for one 3.5mm stereo jack that I will pick up on monday and I will post completed pics then.

Image

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 Post subject: Re: Guitar Headphone Amp with MP3 input
 Post Posted: Sun Mar 21, 2010 2:10 pm 
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Finished product:

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 Post subject: Re: Guitar Headphone Amp with MP3 input
 Post Posted: Sun May 09, 2010 6:50 am 
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Here's an Eagle3D rendering of my headphone amp.


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