Can you set an OP or two on the DN to an absolute frequency? So that they’re completely detached from the relative freq of the trig note and just drone? I thought this was a thing on the DN but I can’t find it now… might be I have too many FMs and have gotten confused.
Rereading the manual (always a good time — honestly! Thanks Elektron!) the only things I see with keyscaling considerations are the filter cutoff and the mod level of the OPs. But maybe I’m missing it?
From what I remember of DN, I don’t think this is possible. I also remember someone requesting it be implemented because they use a similar feature in Ableton’s Operator for making percussive sounds.
Plenty of discussion and requests for this:
https://www.elektronauts.com/search?q=fixed%20frequency%20%23elektron-gear:digitone
Yeah, percussion is my use case as well. It’d be nice to have a snare where the thump of the “head” can be tuned but the noise of the feedback’d “snare” can be constant, for example. I do this on my EFM and Preen patches, and I thought the DN, but ¯\(ツ)/¯. It’s been a long year 
Not a big deal seeing as we have plocks on the DN, of course. I’m just a fan of keeping as much in the sound that I can.
@PeterHanes with the search-fu! I tried “drone” and “absolute” without much luck. “fixed” was the key. Thanks!
One possible workaround is to use an LFO at audio rate, but it’s a little limited. Could lead to interesting results though!
Ratio to 1.00 and ratio offset to -1.00 stops the oscillator.
Apply audio rate LFO to ratio offset and you are there.