Before the SP3000 I had the CA1000T, even before that the RME ADI-2 Pro SE 2/4 and the normal ADI-2. From my experience I can say for sure about the sound quality with IEMs:I have a feeling you want us to convince you for SP3000. I once read that the thin gaming laptops need a million $ of investment to reduce the thickness by 1mm - but that still does not mean that it will be the best thermal performance, and would most probably be performing worse than 1mm thicker laptops. What I want to say is, if you need the SP3000 like functionality with a more suitable configuration, CA1000T would be my choice. But if you really want the SP3000 (and cannot admit it ), just go with SP3000 for peace of mind.
- There is absolutely no difference between the ADI-2 and ADI-2 Pro SE 2/4 (also 4.4mm balanced).
- The CA1000T was notably better than the ADI(s).
- The SP3000 was again notably better than the CA1000T.
By "notably" I mean a general technical superiority that was immediately noticeable. I didn't have to look or strain to ear such a difference. It was simply there, directly audible.