I was planning to start writing part #1 of the step-by-step construction guide today but unfortunately I ran out of time. But here's a sneak peek ;)
As a little side note. I will be building two more amplifiers in the coming weeks. One is already sold and I'm hoping to sell the other as soon as possible too. If you're in Sweden and you want a O2+Odac combo, don't hesitate to send me a message!