It's going to be some time until my library has finished scanning, as I have spent the last couple of weeks ripping a lot of discs, and have been skipping the analysis of DSD files since having the ability to bitstream them. (no ReplayGain)
Scanning DSD seems to take significantly longer than any other format on my system.
So far I have one album with peaks of 93%, 96%, and 100%.
Everything else is below 88% (−6 dB) with the highest being 82% so far, but there's a lot to go.
Is this why Bitstreaming DSD is louder than decoding to PCM? (a +6dB boost?)
I also noticed that I had a track with a peak of 115% in my library! (not DSD) Is this a worst-case scenario for intersample overs?
And on the subject of DSD, might I suggest either extending the 24kHz, 48dB/octave filter to 30kHz, or changing the 30kHz from 24dB/octave to 48dB/octave.
Since you introduced DSD to PCM conversion options, I have been doing some analysis of my library, and some discs do have information which extends beyond the limits of the 24kHz filter, but the 30kHz filter leaves a lot of ultrasonic noise.
If I use the 50kHz filter and then run a 30kHz/48dB low-pass DSP on it, that seems to pass the full signal range without any of the ultrasonic noise. (at least down to around -120dB)