Looks like neither F3 line out or headphone output are bandwidth limited. First sweep is line out and second sweep headphone out to F6 (the line out clipped the F6 inputs but still shows that the swap file played all the way through).
Thanks for posting those.
Looks like the headphone out is a lot more linear than the line out! ... Not sure what those 2 'dips' are near the top of the line out display ?
Headphone out looks a lot better ....seems to roll off pretty steeply at around 60KHz , but is pretty linear below that. (Line out seems to vary quite lot in amplitude?)......
Just to add, I've had the chance to measure thngs for myself, and can confirm that the frequncey response of both the line out socket and the headphne jack extend to 60KHz within 0.5dB and up to 70KHz -6dB.
Above 80KHz no usefully measurable output.
Fortunately this response is always present, so that it's possible to monitor in real time as well as recording these ultrasonic frequencies.
The line out socket also has a limiter option, which will be quite useful for the task I have planned.
Not a very common use for an audio reocrder of course, but it's useful to know the limits of this particular model.
My first use of 32 bit floating point recording, and I have to say I'm very impressed with that format!
Thanks again to those who have responded to my enquiry....