This one has been sitting around too long. I had a new soldering iron I wanted to test so I cranked up the tunes and dug in.
This is a really fun project that is a perfect beginning point for anyone interested in DIY. It takes only a few minutes to put together.
Of course, when it works the first time you power it up it is always a thrill.
This thing sounds amazing. It is way better than it has any right to be. I tested with the very modest but also great sounding $14.99 Monoprice Headphones that Steve Guttenberg praised. Monoprice Headphones
I used a Raspberry Pi Zero W with an IQAudio Pi DAC Zero Hat running PicorePlayer. Source music supplied by Roon.
I first listened to the fantastic sounding Memoirs of a Geisha soundtrack by John Williams with Yo-Yo Ma. Interestingly this amp/headphone combo was revealing enough to let me hear a slight hum present on the recording at the end of the live takes. I had never heard this before. When no music is playing the amp is quiet as a tomb.
I've got a bunch more DIY projects in the pipeline. Stay tuned.