Hi,
I am a new member on the forum and I have been reading posts about the noise from the analog outputs of Daisy Seed and how to get rid of it (cause I have the same problem).
My conclusion is that the voltage level to Daisy Seed’s pin 39 (VIN) should be as high as possible (in my case 16V) and the buffer size as low as possible (in my case 16), then the noise is virtually gone.