rtl-sdr.com

I do believe the problem is an indication for a configuration error.
A screen shot of you App settings would have been nice.
WBFM 192k bw and 50% gain for starters..

I don't think it will happen.
Spectrum Spy app makes use of the R820T2 RF front end mixer that exists in the AirSpy and AirSpy Mini.
the AirSpy HF+ devices do not have an R820.. From what I can perceive, they are direct sampling..

Hi, I have not actually tried that but I don't think you want to 'tune' to zero in sdr# etc. leave out the IF shift, tune sharp to 55.845 and what ever you tune the receiver to.. will come out on sharp. did you put your tap before or after the filters? I have a ic7300 and its 'if' is just a 12khz si...

The latest version of SDRuno (ver 1.33)is shipping with SDRuno.EXTIO.exe (ver1.05)again included.
So we don't have to keep 2 separate installs

the last version of SDRuno to support EXTIO devices such as the RTL-SDR was 1.22. Remember only SDRuno.EXTIO.exe supports the RTL.. Much like SDR# does not support the RSP.

Do get any clear audio from anything?

is that not what happens when you open SDRuno.exe with the rsp unplugged?
Don't you want SDRuno.EXTIO.exe ver 1.1.0.0 last available in the SDRuno 1.2 package and not since.
While I have not tried, but I bet you can move the file to the 'current' folder and it will still work.

frequently you need a fresh rtlsdr.dll file that allows you to select the Q branch..
I just stuffed a fresh one into my sdr#, pick q branch and 5mhz.. presto wwv.

Oh, and the NEW https://sdrplayusers.net/forums/.

why not d/l the HDSDR – V2.76A (13TH JUL 2018) from sdrplay.com/downloads? if I recall correctly, it was documented therein. just pull the EXTIO PLUGINS – V1.2 (13TH JUL 2018).
While the fourm is shut down, everything else is alive and well.

Found my RTL.. Yes Touchstone Pro opens and address an RTL device without issue.