moonwatcher
I'd have to say it's a combination of both. But over the past couple of years, I have the Pontus driven by a Denafrips Iris DDC via I2S; and that has a lot to do with the way they sound in my system. I find the Pontus/Iris bass to be weighty, punchy, textured, and is well defined. It also is very slightly smoothed out and integrates well with the midrange.....part of the reason I suspect that the combination is such an easy DAC to love.
I find the Pontus/Iris to be fun, energetic, but also not in your face or at all fatiguing.....just all around enjoyable. I've upgraded a preamp, 2 amps, and speakers; and the Pontus/Iris have not yet been outclassed to the point of needing to be replaced immediately.
I've compared the Pontus/Iris combination to a bunch of other DACs, but never pulled the trigger as I didn't think they would greatly improve the overall sound. Yes some were more detailed, some were more punchy in the bass, and some quicker....but only the Holo Audio May KTE DAC (at $5,600 new), Denafrips Terminator II ($6,000 new) and Terminator Plus ($7,600 new) bettered the Pontus/Iris in total.....I even preferred the Pontus/Iris combination to the bigger brother Denafrips Venus II at $3,100 new.
It's not as punchy as say a Holo Audio May DAC, nor a Chord.....and I have never done a direct comparison between a Yggy and the Pontus II, so not much help there. But for $1,600 for a used Pontus II 12th, and an Iris DDC at $400; the Pontus II and Iris is a great combination.....not just for the money, but just a great combination.
Yes I will replace the Pontus/Iris in the next year, but the replacement will be much much more expensive.....something like the T+A 200, Denafrips Terminator Plus, Berkeley Audio Alpha, Grimm MU2 streamer/DAC, or Lampizator.