level, macro details are imo short sounds that are relatively close to the average dB of the piece as a whole, having excessive odd harmonics and high frequency forwardness makes this stuff POP out
So hearing the strum of strings over the sound of “fretting” ideally I want to hear and appreciate both
Micro detail or transients are super short sounds that are below the average dB of the arrangement as a whole, NOT having excessive harmonics, odd or even, or upper-mid/top end emphasis in frequency response allows this detail to be discerned and heard more easily
I also sometimes consider “mechanical” sounds with heavy odd harmonics to be “macro” detail, as a lot of BRIGHT entry level “hi-fi” headphones shove a lot of these heavily mechanical details in your face, and they imo do that by having an elevated frequency response in the top end of the spectrum. The true micro detail that is heavily condensed in the mid and lower frequencies is very much masked by this Macro detail
Like a vocalist taking a breath detracting from your capability to both hear and discern the slight vibrato in what ever is being sung
An for me “detail” is what makes what ever I’m listening to “unique” so for example listening to two pieces of music performed by different artists at the same tempo and same average dB what will separate the two pieces is the detail
So like Jimmy Hendrix for example, he likes to throw super short tiny quiet little bends at the end of his riffs, I didn’t catch this detail till I got my RME adi2 and LCD 2 Prefazor, it was also… well discernible
Excess harmonics imo will cover over detail, or those super short but complex and unique harmonic profiles for a given sound.