After fiasco with StudioMix (I have not managed to make the hardware sufficiently reliable, not even encoders...), I decide to give another Cakewalk labeled hardware a try. That time it is (Roland) V-Studio 20. At least it is in good conditions and everything (on hardware part) is working.
The first experience is mixes:
+ driver installation was smooth, apart from usual acrobatic with Win8 driver under Win10
- ASIO produce pops and clicks with any settings and buffer sizes I have tried. On any Sonar operation (record, mute, stop, even looping (!)). In normal linear recording and playing everything is fine, starting from 12ms latency (works under 10, but not stable, probably will use that to test software guitar sims). I hope I will find the reason, and I hope it is not going to be Win10 incompatibility...
+ WDM/KS do not show the same symptoms. But on lowest setting (18ms) and attempt to record kill the Audio Engine. With 35ms everything green. Note that my M-Audio, with 10.5ms in "relaxed" settings never had any such problems.
+ Control Surface works
- Control Surface is only transport, volume in "jump" mode and combined select/record arm. So, there will be AZ Controller preset. Also I have thought to add a kind of "StudioWare" since I have found a bit funny that apart from preset changes, controls can not be used to operate effects.
- No silence detection, rather bad decision for guitar oriented device with build-in mic.
A comparison with LivePlay GTX
* LivePlay has definitively more features. Not only way more connectors, stand alone, display and huge set of effects, but also class complaint and so no problem with drivers.
* but V-Studio has own advantages: 24bit and I think better recording from all sources, has normal line inputs (which can be recorded), for my taste amps are nicer, bus powered, DAW controls.
And so for use with a notebook and for recording V-Studio is not bad. And for current e-bay price it is ok. But original introduction price was way too hi for such device. No wonder it was abandoned rather quick.