So, I did a lot of reading on DACs. There is so much info your head will swim. I found the Topping DX3pro+ dac that did all i needed. It has a USB, two coax, one optical, and Bluetooth. The reviews i read seemed pretty good to me. So, I bought it. I was very pleased for the first week and then started noticing bad stuff. The coax connection between the dac and cd player made some distorted crackling noise. After some time it would go away, until next startup when it started the noise again. Swapped two coax interconnects and different inputs to know avail. The bluetooth sounded distorted as well. Then the bluetooth stopped working. It connected and showed 48k rate, but no sound. The crackling noise appeared on my volume control, too. Every detent there was noise. The cd player sounds great through my preamp as long as it's not going through the DAC.. So, back it goes. Now I'm starting over looking for a DAC with the same features but hopefully not built in China. Any recommendations for a DAC appreciated