Sony retail shops?

yay!!!   

my new sony gadget collection and my A15 is pinkified!!!!   

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x99 is just a portable spk. only slight difference not sky to ground...
smaster hx i got try before. it increase seperation between each instruments and voice. sound neutral (seimbang) but not natural (biasa)

If you connect them with X99 via bluetooth + LDAC, I think the difference won't be obvious .

3.5mm still ok. sound process by ur device dac.
usb type b not sure the compatibility to hand held devices.

actual music performance is choose the best spk first. then only look at process and etc.... bad spk give bad sound no matter abcdefg technology is used.

for this budget i will go denon ceol if not moving travel and not size constrained.

dynamic range (dr) is highest vol point vs lowest vol point.
let say a portable player has volume control 0--100%

50% is no boost (0db gain reference point) and 51% onwards is boost.

u adjust 10% the song play with reduced loudest point and lowest point. cannot hear tiny sound.

now up 50% the song able to present loud point clearly and low point too. perfect for near field but loss when u move further.

u need boost. turn up 70-80%
loudest part only increase a bit but tiny sound goes up a lot.
u are reducing dr. at the same time human ear adapting will block the loud part (protect ur brain)

up 100% no difference between loud and low already. bg noise also come out.

when connecting 3.5mm to x99, ur walkman device what reference point??
instruction dont tell. sales ppl dunno lol

so is not a bad thing unless persuade for perfection, not gonna achieve from portable spk x99 anyway.

far from distort bro. just lose the dr of original content.

short example is soft wind blow (barely heard) and thunder (must loud).
after mess up is FFUUUUUUUU wind blow (typhoon?! ) and thunder (equal loud).