The SMPS for adi 2/4 will solve some "current leaking" issue in the old style non grounded SMPS. It now has a grounded connection. On a standing foot I dont know what it means. MC has given a brief description in ADI 2/4 thread at RME forum about this and the new LPS. I havent given this much thought yet. I will wait for a full description and an actual product (and price ofcourse). Alot of people swear to LPS, and if RME surveyd this and found that alot of audiophiles actually refuse to buy a product with an adapter type SMPS it just starts to make sense. So what may look like a sellout could just be a way to reach a broader market. So WTH it probably wont sound worse, just a little more confidence for nervous people. With the tone RME sets with their products it would be strange to a degree of schizophrenia to wander of into audiophile mumbo jumbo. OK RME are sales people, but I think they are %99 straight shooters. Hence MC doesnt make a claim to better sound, and how could he. They have touted the SMPS solution all along as good enough or better. Anyway clean power is always a nice thing, right. About SMPS Ive never heard any switching noise or buzz sound when I touch my headphones.
For me to buy this it would be a minimum techspec to be able to connect ADI-2 PRO fsr and UCXII at the same time. Or at least since the ADI 2/4 will connect with a special contact to have the option to connect another 12v device at the same time and that it drive these devices with no effort..