For those looking at Spring vs PONTUS, this happened last weekend
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I'm an old owner of a KTE Tuned Spring Level 3 with approx 500-1000hrs in (no longer own, going off memory). During our meet at Bottlehead last weekend we were able to A/B the PONTUS vs Spring. I've had the PONTUS for about a week prior to this meet and was able to put ~200hrs on it with music. The Spring Level has maybe 200-300hrs as well.
Don't mind the comment of PNWRain on that thread saying the PONTUS sounds odd, I don't think he knows what he's talking yet as he's currently using on-board pc sound going to an amp for his headphone and might be playing towards the owner of KTE who was at the meet (understandable, Tim is a good guy and he makes great gear).
The picture, from left to right on the bottom only: (click to zoom)
Denafrips PONTUS, Cayin iHA6, Schiit Freya tube/ss preamp (to A/B Spring vs PONUTS), KTE Level 1 Tuned Spring DAC
Initial Impressions are: The Denafrips Pontus has a more even tuning/tonality than the Spring DAC Lvl 1 KTE. The Spring DAC does have a slight sub-bass/bass boost and somewhat sweet sound midrange and the Pontus has a more even keel (dare I say neutral/flat) presentation of the sound. The Spring has a very very slight level of clarity but this may be due to the mids tuning.
3 of 4 listeners preferred the Spring DAC over the PONTUS however 1 listener who preferred the PONTUS said that the PONTUS sound representation was more true sounding as it did not play with the sound by adding quantity to any frequency.
Soundstage and depth are pretty even between both dacs, the Spring dac has a slight advantage in instrument separation. This could be because of the slight elevated bass and mids which also gives the Spring the slight advantage in perceived clarity. This is not to say that anything is missing in the PONTUS sound, it is just a more flat response.
More to come soon on my write-up, do not just read this and go off making an opinion as all will be covered thoroughly.