Tbh my SP3K impression was brief, so could be inaccurate. But generally speaking the timbre and presentation sounded off for me.Interesting. I think in twisters review of SP3K he thought they were quite similar but SP3K had a little more mid warmth at the expense of sub bass.
Was your listening done with headphones by the way?
No headphones since I generally don’t think they sound that good with even the best DAPs (at least relatively speaking to desktop systems), but I used a few IEMs I had on hand: Anole VX, IER-Z1R, and Variations.