I have purchased 2 AudioNote Kits, and have had them professionally built by their sanctioned builder Pete Fulton, who is fanatically neat. Both Kits were beyond what I expected. The one was an 8 watt 300b integrated, and the other was the 2.1 DAC which I am still using and it sounds fantastic. I regretfully sold the amp only because I needed the money to buy something else, and it sold on the same day that it was listed! They have great support too.