I don't understand this. Hugo specs say 94mW @ 300 Ohms, 740mW @ 32, 1050 @ 8. All of these are lower than the power implied by SP2000's (balanced) 6Vrms output, although Hugo2 clearly produces more than SP2000's SE output.
Is the SP2000 deficient in current output?
SP2000 have redundant power for most 64 or noble.
But the problem is about the sound stage coherent, bass line separation.
It is not about how loud it can drive the iems, sp2000 can handle mine within (VoL 40 90), above that the distortion appears and sound will collapse the stage.
Especially for hard to drive, you can see the big difference.
HugoTT2 is out of the league but if you need an example, it is more drastic example.
With more power, you will have better control, better density and more expand of note(without overlap the detail).
That's my experience, the number does not tell you all the aspects because it only shows the specification at one frequency for example(1000Hz). In additional, the impedance of items (especially multiple driver with crossover ) is noticeable varied across the frequency spectrum, then it is very hard to evaluated base on one number. Furthermore, the power is restrict by U and I, the are case it limited by Max output I and Max output U, the sp2000 bust the vol up to 6Vrm, but when compared to HugoTT2(Low Gain - 3Vrm or 2Vrm), HugoTT2 is much better then I think the limitation is in the current output. It is hard to output more than sp2000 can do for a portable.
Furthermore, I think it is the topic for SP2000 so we should come back haha
Regards,