I am still figuring out whether A.R.S. and A.R.S. Amoretto are machines from different or the same manufacturer.
However, ARS Amoretto and ARS Knitter are the same machines; these model names are used interchangeably.
A.R.S. Automatic Home Knitter
A.R.S. Knitter M, with clutch/change pole for needle selection
A.R.S. Knitter MT, standard, basic/manual
A.R.S. Amoretto MT-2, standard, basic/manual, with “fancy” mechanism
A.R.S. Amoretto MT-3, standard, basic/manual, with “fancy” mechanism
A.R.S. Amoretto MT-4, standard, basic/manual, with “fancy” mechanism
A.R.S. Amoretto MT-5, standard, basic/manual, with “fancy” mechanism
A.R.S. Amoretto Super 8, standard, basic/manual, with “fancy” mechanism
A.R.S. Amoretto Super 8 Excel, standard, basic/manual, with “fancy” mechanism
A.R.S. Knitter SM-15
A.R.S. Knitter SM-18, standard-gauge, basic/manual, with clutch/pole needle selection