I've done enough research to understand what I'm getting in terms of size, features, etc. My priorities were battery performance, a quarter-inch headphone jack, and LDAC, which I also bought separately. The main purpose of this purchase is to be able to walk around my bedroom at night and enjoy music without being tied to my headphone amp. The packaging is beautiful. I wish they had some sort of case or case for the device for the money. This gives you 10 rubber feet to protect the surface when you place it on a table or other surface, but a case, a case would be a nice touch. In addition, a short 3.5 mm connection cable, which is also not included in the scope of delivery, would not hurt. It is no problem for me. The sound quality is excellent. I've been working with the internal DAC and the T50rp with the LDAC disconnected from the BT module most of the day and heck it can push high gain headphones with no distortion. Very smooth and clear. I'll be testing it with the 6XX which is less demanding than the T50rp so I expect it to have enough power to drive it and I don't think I'll put the volume knob past 10 o'clock. The build quality is very good. Feels smooth and the switch feels solid. Overall I am very impressed with this DAC/amp.
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