My dac's ultra analog AES-20 chip went bad?

Hi there:my resolution audio dac ultra analog input AES 20 chip went bad and the manufacturer does not have any,anyone knows where i could find one?thanks so much for your help.AL
Analog Devices, Cirrus Logic, Texas Instruments, or Maxim Semiconductor. One of them makes the chip. Find out from Resolution Audio who makes the chip, they should at least know that.