Nem.

"I've tried 3-4 good linear power supplies and a battery pack with the RME ADI-2 DAC and none of them make a meaningful improvement. I still have most of them, but they're not being used for the RME because it wasn't worth the hassle. It does a great job of cleaning up power internally."

A kézikönyvben pedig ez olvasható:

"6. Power Supply
In order to make operating the ADI-2 DAC as flexible as possible, the unit has a universal DC
input socket, accepting voltages from 9.5 Volts up to 15 Volts. An internal switching regulator of the latest technology with high efficiency (> 90%) prevents internal hum noise by operating above audible frequencies. Internally the switching regulator is followed by standard linear regulators, followed by super low-noise linear regulators. Therefore the ADI-2 DAC achieves its technical specs even with less optimal power supplies. Or in other words: the choice of power supply is not critical.

Still the unit includes a high-quality switching power supply, 12 V / 2 A, which not only accepts any mains voltage between 100 V and 240 V (usable world-wide), but is also fully regulated against voltage fluctuations and suppresses line noise. Additionally it only weights 150 g in spite of its high power of 24 Watts.

The DC input of the ADI-2 DAC also allows for the use of a rechargeable lead-battery or LiPo
instead of a power supply, for completely independent mobile operation and ground isolation.

A matching connection cable (power jack to terminals 6.3 mm) is available from RME. Special power banks in the range of 10,000 mAh and up can be found equipped with a 12 V output. These offer a perfect solution for mobility as well as ground isolated operation, for small money"

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