hi, i have 2 s2000, one tabasco and one red white blue.
both have 504 mpu ver b, i have a constant noise in speaker(shhhhhhhhhhhhhhhhhh).
i make some test and i think when you put a multimedia card with simm card, noise appear!
i look also volume sound increase after sound card is install!
i put lower volume in setting of machine, it 's work
but do you know is this card have pre-amp that genere noise?

volume of my machine is in level 1 and it is very loud!
my opignion is this card have output sound level too high ,and amplier , amplified noise!
any suggestion?
thanks