I got tired of having to buy 9v alkalines, so I just finished building a Tread AC-DC power supply from a 16v AC wall wart I found in the trash and some assorted parts on a protoboard. It fits snugly in an Altoids tin with a MINT amp. It sounds just about indistinguishable from when it was...

The left channel of my SR60s crapped out due to a broken wire, so I decided to recable it. I wanted to use detachable cables so that I could use a ~3' cable for portable use and a ~10' cable while in my room. The mod on the headwize project pages used 2.5mm mono jacks/plugs, but I used 3.5mm...

I'm building a MINT amp right now, and I'm trying to figure out how much bandwidth the buffer should be set to used with an OPA2277. Would wide open at 180mhz be too much? Also, what is the formula to figure out what resistor to use to select the bandwidth? I checked the Quiescent Current vs...