Vhiner,
Yes, those are very rare! Few years ago, I saw one was for sale on ebay, I did not know what the a/d/s idat was, so I emailed John, John told me that was the dac I should get, and send her to him for upgrade. John said that the design of the circuit board is better than better than other models, and can be modified to run on battery. But I did not win the auction, I emailed John, told him that I did not win the auction, John told me that he has one, if I am interested in that, he can sell that to me, I said: Suer. That's how I get mine, and I'm so happy with this baby ever since, and have no desire to buy another newer one to replace her, end of the story. John just told me he can instal a NBC connector on this dac, I will send it in for that update.
Yes, those are very rare! Few years ago, I saw one was for sale on ebay, I did not know what the a/d/s idat was, so I emailed John, John told me that was the dac I should get, and send her to him for upgrade. John said that the design of the circuit board is better than better than other models, and can be modified to run on battery. But I did not win the auction, I emailed John, told him that I did not win the auction, John told me that he has one, if I am interested in that, he can sell that to me, I said: Suer. That's how I get mine, and I'm so happy with this baby ever since, and have no desire to buy another newer one to replace her, end of the story. John just told me he can instal a NBC connector on this dac, I will send it in for that update.