Hello if anyone has one or more spare PCM 1720 DAC chips that are not going to be used could you contact me as I have a DAC being repaired and it is this chip that has failed . The PCM 1720 were I think made by Texas Instruments and like many DAC chips are no longer produced and so hard to find genuine originals . I have also made the same request in the Private Gallery for sale thread to try and get as many reads as possible . Any help you can offer would be appreciated .