Hypops
500+ Head-Fier
But to be fair, music being too loud, too quiet, or in need of some EQ can also "impact quality unfavourably."Both volume and EQ can impact the sound quality unfavorably. If it is noticeable depends on the precision of the implementation. Volume mostly changes the amplitude of the samples and -6 db is technically reducing by 1 bit, bit proper implementation will be more complex. EQ must change a lot of samples due to a frequency like 50 hz being spread over 1/50 of a second so you need to modify a lot of samples to change the level of that frequency.
As with everything in audio, it's all about trade-offs and compromises.