as i see it my measurements clearly show that there is 115db of SFDR between 20hz and 30khz with gain at -10db

Is the dynamic range measurement related to the SINAD measurement? in theory, with my proposed fix of harmonic distortion (-10db gain which ends up with -25db harmonic distortion) also the sinad value should be improved i think

One more thing... could someone explain why a dynamic range measurement shows less dynamic range then there actually is? (see the multitone test with 115db) i know other dacs show even more in the multitone test but i cant wrap my head around why multitone shows 115db and the DR measurement 95db

no not yet, i usually dont like to bother other people todo excessive testing maybe we can do it together once i made some samples :)

i did level match with pink noise and a db meter to +/- -0.3db ... good enough for me

dude i have to reduce volume to test this how am i supposed to not touch volume at all? whatever... for me its clear you guys can keep arguing here :) i just opened this thread here in sound science since i mainly wanted to know whether this is usual behaviour for dacs, which apparantely is...

what makes comparisons here usually hard is the fact that you have turn it all the way up BUT... if you turn volume slowly higher i can kinda convince myself to actually hear the unlinearity going towards full volume (i kinda thought before that my speakers just give in, but this is only partly...

because i differentiate noise an harmonic distortion... i plan todo a levelmatched youtube comparison with this in the future, imo this is the best way to tell (for others) and yes i also did it before... imo the difference is pretty clear once you heared it .... thats why i advice other...

stupid argument, the dac adds his own distortion.... and i will :) because it sounds better :wink:

a good question probably would be if the additional harmonic distortion of the dac shows up on some loudspeaker in room measurements ... tho i think the umik-1 has far to huge noisefloor for that

How is RMS a good indication here? we also hear peaks, no? and usual music peaks can peak to -1 to -3db (of course frequency dependend or it would sound lets say "not great" i guess this is also where a 1khz test tone is actually more telling than for example a 10khz one in terms of IMD, music...

Here is the full review if you wanna look up "how bad this dac is" https://www.audiosciencereview.com/forum/index.php?threads/black-lion-revolution-2x2-review-audio-interface.22141/

well imo a bit more noise is less harmful than harmonic distortion i guess this graphs shows non-linearitys specially once harmonic distortion creeps "above" the noisefloor, its quite logical why other dacs with less noise show earlier IMD what striked me tho was the relationship this happens...

... Well Intermodulation distortion (IMD) is a measure of the nonlinearity of an amplifier. When two or more sinusoidal frequencies are applied to an amplifier, any nonlinear behavior of the amplifier will produce additional frequency components called intermodulation products. For an amplifier...

yea because volume obviously increases DR ... thats why distortion gets less weighted (unless harmonic distortion creeps in, making the graph going towards full volume less linear...) either you guys dont understand what im saying or dont "wanna" understand it