Yes, the user interface is tortuous, and it is a bona-fide member of the boatanchor club. But with an 11A32 preamp, it is the cleanest 10-bit measurement system I've ever encountered.
Attached is a low-distortion ~ 1kHz 1Vpp sinewave through the combo. Yellow trace is two time-domain averages; blue trace is 64 averages. The latter gives more than 20dB signal-to-noise ratio improvement across the spectrum, right into 14-bit territory. That is one clean preamp / A to D converter.
It is pretty much the same with a 100kHz sine.
Contributing to the good dynamic range is, the 1140x units do their averaging in real math, not summed integers.
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