It IS tiny … but not all that capable
Which is why I’m building Trampa, slightly larger (To allow for per footswitch display) but with capabilities more like a MorningStar device
I bought recently Myvolts Ripcord - they make differet types, also 12V center positive, and it works great. It is possible to power Dwarf with powerbank or PC USB. DUO X works with powerbank, not with PC USB out - too small efficiency for DUOX MyVolts