Connecting external dac to ultra

Until quite recently I agreed with you. But listening to very loud music exacerbates problems.

I was using the default wiim ultra filter: Linear Phase Fast Roll-off Filter type.

I found the song All By Myself by Celine Dion (1996) was harsh in the treble at very loud volumes.

So I tried all of the wiim ultra filters in the order that I'd prefer next best looking at their frequency curves. Every one sounded better each time.

The last one I tried, the one I least wanted to sound best knowing the frequency curves, was Corrected Minimum Phase Fast Roll-Off Filter.

So I used that filter for all my listening, loud and normal, and actually found I was enjoying all the music more.

This intrigued me so I started reading up on DAC filters, which is when I learnt about NOS. On examining the Fiio K11 R2R frequency curve I saw it performed almost as well as the wiim default filter, only down about 2.5db at 20khz, so I thought to give it a try - I do prefer a DAC respecting a 20hz to 20khz flat frequency response, but it's got to sound good with all music I listen to - I don't like fidgeting with tone controls.

And now I'm enjoying the music more at any level using the Fiio NOS mode DAC.

I must reiterate that I could only decide a difference at very loud volumes. And can fully understand one not being able to hear the difference at normal listening levels.
Fiio R2R is a great DAC!
 
In example, Fiio r2r has an audible wider stage then the Ultra DAC
Ok. Never tried it. I have the sound stage I need. I am using external DACs of unknown type, one in each active speaker (Wharfedale). Probably going directly from PCM data to PWM for the class d amp.
 
Really. I didn't know it was from him. I have used this or similar for many years. Where is this from?
This suggests someone else coined the phrase from this Alan Parsons interview

 
This suggests someone else coined the phrase from this Alan Parsons interview

I was using it back in the 90' so I think it is from Parsons sometimes in the 70' or 80' then?
 
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