External Linear Power Supplies

I don't know if this will help but I've powered my Qute EX DAC with an iFi Power and a Teddy Pardo. The Teddy Pardo was the better of the two. I heard no difference between the stock Chord power supply and the iFi Power.

I've also powered my microRendu with an iFi Power and a Small Green Computer 7V. I won't look further than the Small Green Computer power supply. Great bang for the buck.

I've not used an SBooster but they are well-reviewed. 

kingbarbuda  Go with the Small Green Computer 200W unit. It offers 4 variable outputs. Andrew is great with support.

"Independent 19VDC, 12VDC, and 2 x variable Outputs can power four devices simultaneously"  

The variable Outputs range from 3.3v to 15V.

I use the 100W unit (no longer made) and it is quality unit. The included cables are a great starting point, however, you will get additional performance gains by going with custom DC cables. I use Ghent.

If you believe in a separate power supply for each unit you need to power, then go the SBooster route. There are other options as well.

You would need a separate power supply for each of these because they have different DC voltage requirements and different connections.

The iFi power supply might be better than some stock power supplies, but it’s still a wal-wart switching power supply. I would avoid it if you can afford the better ones.

If you’re on a budget, I have had good results with the China Teradak linear power supplies. Here is one with a 5V micro-USB cord for the Chord Qutest.

https://www.ebay.com/itm/TeraDak-DC5V-2-5A-Micro-USB-Linear-Power-supply-For-Raspberry-Pi3/183841452...