Update of EE Dac +. Back in January I mentioned I preferred the stock unit in SS mode with tube removed. Since then I have experimented with swapping opamps and found that discrete opamps like Dexa and Bursons greatly improve the sound. DAC+ is now more analog sounding. Tonally, the Dexas offer better overall clarity while the Buron's are tonally weightier. In my set up I prefer the Dexas over the Burson's. With the Discrete Opamps I also now favor tube mode over SS mode and have replaced the stock tube with a NOS Mullard (I've tried about a half dozen NOS tubes. Short story is I prefer all of them to the stock tube).