Recommendations for 3rd party power supply for Chord 2qute?

I have my Bluesound Node 2i running into a Chord 2qute still on the stock wall wart. Chord cautions against indiscriminate use of 3rd party power supplies. Any safe and effective recommendations on a budget consistent with the cost of the 2qute? And derisive comments lambasting the concept that it makes a difference will be respectfully received.