Listen to this. Found it here:
http://testing.holmerup.biz/mic_pretest/index_en.html
REMEMBER what can be read on the site: OBS!!! If you get distorsion when you listen to the WAV-files, it's not due to bad recordings - but rather that your player doesn't support 32-bit FP. Works fine in my Windows Media Player, problems though in my quite old Winamp.
It's links to sound samples in wave format of some ribbon mics. I find it very interesting. You have to Right Click and use "Save Target As".
Acoustic Guitar:
AEA R84 Guitar Golden Age R1 ($256)
Royer R121 front Golden Age R2 ($225)
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Vocals:
AEA R84 Golden Age R1 Royer R121 front Golden Age R2
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Loudspeaker noise:
AEA R84 Golden Age R1 Royer R121 front Golden Age R2
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Cheers thumbsup ,
Hans