like i said before in a previous post, the FLAC encoder in freac have this sort of thing where there is some custom options outside the window function signal list option where you have linear predictor, LPC precision, and min/max partition order. this sort of thing really elongates the signal over the phone circumference and is much more inward sounding without the help of the coil of the phones during acoustics and percussion. the idea here is to simply warn to make aware also that good quality goes forward with the window signal permutation list not really resting mainly also with the other options. so now i learning that pre-setting up with flac firstly, then allowing the custom option for signal windows with my previous installments WITHOUT any further custom options increased (all set to zero/or null) allows better acoustic and percussion quality. so now im listening to a perfect circle albums and Tool albums with this thing and i currently have it set up where i pre-setup with flac encoder first with signal processing option set to sample format 32 bit float and then re-encoding with AIFF 32 bit signed with signal processing fast SINC interpolator with 44100 hz. this setup has a very noticeable quality difference without getting to intricate with flac just some window function permutations and i was good to go.