The other missing option in the package is the 500μV/div wich does come usefulwhile teoubleshooting the kind of stuff you are talking about.
DON'T - this is bad advice!
I didn't knew about the low range issue, the bit stretching was pretty obvious, and the self noise for sure, but not usuable at all haven't cross me yet.
@JS - how long have you been using your scope?
Not long enough, for sure, I got it a short time ago and only made a few measurements I actually needed for real applications, pretty little play around to test things before to get used to the interface and that's it. Working with audio the lower range seemed useful to me as you are sometime playing with pretty low signals and even if it's only useful in long averaging might help to see things a bit bigger when offset is not the problem, I haven't really used yet.
This is not the first time I use a scope, and I'm very used to do post processing on the PC from the samples so I make a lot of my math there, being able to capture directly from matlab or octave in real time is really nice for me. Do whatever script I need there. Even then this scope has proven to be much better than the cheap lecroy we have on the university for most uses, every once in a while we get to use a better one but nothing too fancy or modern for general use.
I did used quite a bit of the digital decoding and will some more as soon as I grab a repair I have on the shelf of a PC controller for audio. Already fixed some of it but I think there are a few ICs on the thing still messing things. Non of this seen on the university, I think is something really missing there.
One thing I'm missing are the diff probes for which I've done some research but haven't find time to work on them, as there are too many applications as one single one won't cut it I rather experiment a bit and build a few than buuing one that only works for some applications. I work mostly on induatrial applications and some on audio gear. For industrial I would need an isolated probe for sure to measure power drivers and a differential probe I might buy for safety, so far I been getting away with a transformer as I mentioned. For audio some small CM low noise is required, 30V of CM is plenty, some gain like a 0.1X is nice mainly to avoid the 1mV/div on the scope so the noise of the scope is not a limiting factor. Nothing to do with high speed which makes them pretty DIY friendly. For the embedded side of things differential probes aren't so essential so I can live without them. Other problem I'm facing is some work on a boat, to hunt some noises but the reference of the boat isn't the mains earth reference but the water, so I'm not completely sure how to deal with that.
@ebastler If I'm missing something let me know, I'm always open to learn, I know I need a few things around my scope to be able to work confortably with it, way too many probes on the world to get them all, I'm just trying to figure out which ones I actually need. Too long so I leave it here. Thanks in advanced.
JS