Hi again everyone,
After doing some more research, I found this model from Tascam.
Tascam Model 16:
https://www.thomann.de/gb/tascam_mod...55&subid=forum
It seems it would cover all my initial need : with multi tracks recording, later edit in Ableton etc.
Last but not least, I can record without starting my computer:
16-Track recording is possible in WAV/BWF format on SD/SDHC/SDXC cards up to 128 GB
What do you think so far?