No, Tidal has lossless cd across the board, MQA (which is comparable, but limited to the better recordings and basically dead since the company went out of business) and they recently added FLAC files which I find overall to be better than Redbook CD and MQA. Using the internal DAC of the iPhone is never going to sound good. You’ll only want to use it as basically your remote control. That said, the Node has an ok internal DAC; however it sounds great in my setup with an MHDT DAC (with tube output stage) and an external Teddy Pardo LPS (linear power supply) for the Node’s streamer. It’s a big step up from the cheap and noisy internal switching power supply the Node comes with to hit a price point.