Recently I found out about FNIRSI electronics gear. Full-featured scopes and multi meters in a small footprint. So I ordered the DVM model as well as a more bench style DSO/Generator/Analyzer model for misc diagnostic work I do. So far they exceed my expectations for a DSO in it's price class. Include all the typical manual settings, coupling, offsets, display options, X-Y vectorscope, signal generator with typical waveforms and noise for whatever you're wanting it to do. One package usually multiple devices on the bench. Comes with easy to calibrate X1/X10 probes to match the number of channels you have. In these cases, each meter has 2 scope probes, signal gen BNC jumper, DVM V/A/ohm probes and temp probe.Back when had such things for business use, cost was considerably more for each item in a much larger form factor. Very pleased with battery life, ease of operation, accuracy in # of data points in samples, storage, etc. I'm sure I haven't used all of the features yet even after reading a well put together manual (global languages supported) For the DVM/scope model FNIRSI-2C23T, it's 10MHZ BW for each scope channel is adequate for basic display, had I known about the 2C53T with 50MHZ, I would have popped for he small amount extra to get that one. Either one is great for audio, while the higher can assist in many HF radio projects, including Amatuer Radio gear.
The FNIRSI-DPOS350P is even more amazing with oscilloscope, signal generator, frequency response analyzer and spectrum analyzer in one package. With 2 scope X1/X10 probes with 350MHZ BW, you can measure even more radio-related gear as well.
While the internal batteries charge last for a lot of use, when new and when needed, both have quality USB-C charging cables included for faster charging from today's higher current output quick chargers..
FNIRSI devices are firmware upgradeable if/when company comes out with improvements or feature enhancements. Both came shipped with latest revisions installed which is always nice to not have to immediately upgrade something you just bought before you know it works.
You can tell quality control is high how they build-by-order so all items get the latest software, hardware. The little extra wait is well worth it when they arrive at your door.
Have used various brands and models of test gear in my careers and so far, very pleased with my finding FNIRSI and their products.
They have tools available as well, so check them out on their website.
https://www.fnirsi.com