My Marantz PM 8004 sound very good at all volume. It is a older model. The current model is PM8006. Bear in mind it also depends on rest of the components of the setup. Such as interconnects, speaker wires, sources, speakers placement.....
I also have a Modi 3 DAC . I use it to stream music. It sounds good and is a great value but my CD setup produces much better sound quality. I pair my CD player with Marantz integrated amp. I guess it helps with level matching.