On Fri, Jan 31, 2014 at 04:16:18PM +0000, Charles Keepax wrote:
Evaluation of the device has given some settings to improve the ultrasonic frequency response. However, this may cause sub-optimal performance in system designs with high output gains on the headphone path (0dB or -2dB), and as the frequencies are inaudible anyway some users may not desire higher frequency response at those frequencies. So allow the user the option to select it if it is appopriate for their system design.
Reading what you're saying here I can't help but think that this sounds like it may be use case dependent as well and therefore something that ought to be runtime controllable depending on if ultrasonics and/or line level outputs are in use (0dB isn't high gain, it's no gain!) for example.