Chip makers such as Burr Brown, Texas Instruments, and Wolfson microelectronics offer excellent sound quality. Many others (but not all) are simply trying to meet an engineering standard of measured performance at a lower cost to their company. As such, implementing these properly will be more difficult for a manufacturer of audio gear. Like many others have said, implementation is key. The number of DAC chips does not matter unless there is a digital filter between the the digital and analog output stage(s).
If Class D is what you want (perhaps to save some electricity) then the Octavio looks perfect. If I were you, I would email the company and ask about their return policy; including shipping costs back to them if you don’t like it.
Class D amplifiers can be almost at the level of the Class A/B if it’s a good design.Hence why many audiophiles have opted for Class D over Class A.
Good luck.