The 1330 / 1390 / 1430 amp had the longest run of any Silvertone amplifier. It was cheap, it was reliable, and it actually looked pretty cool. The simple circuit produced 2.3 watts on a good day, and had one input jack and a simple volume control. Although model numbers, tubes, and nameplates changed, the essence of the 1330 remained the same.

Introduced:
Fall/Winter 1954 at $24.95 as model 57 G1330
During its loooong career it was:
57 K, D/H/G UI 1330 then
57 D/H/G/Y 1390
57 F/K/H/A 1430
It was named the 'Meteor' from D1390 (1957) through K1430 (1960)

Retired:
Spring/Summer 1966 at $22.95 as model 57 G1430