This is my first DIY project since I was a teen (3 decades ago). After reflowing many solder joints, and burning two red LEDs with my careless soldering gun, I have a very functional, lovely sounding amplifier. I wanted to thank you guys here for helping me with a few issues I had, and thought I'd treat you to a pic of the crack on my desktop. I have a iMac right now which feeds a JDS ODAC and am listening on a pair of HD-650's. I am ready to tackle the speedball next. Thanks again for getting me off of apple earbuds, and letting me hear my music!