Can anyone, tell me when this unit was released.
I recall back in the real early 80's seeing it in a old large Jet Magazine. Always caught my eye, I just bought one today on ebay mint the only portable with a 10cm woofer.

1.)without suffix : (120V,220V,240V),

2.)(or 100V,Japan Version only),

3.)l :-(240/220/110V),

4.)w :-(240/220/110V),

5.)jb :-(240/220/110V

6.)jw :-(240/220/120V),no tape selector,

7.)jwII :-(?),

8.)lm :-silver((240/220/120V),

9.)lb :-(side switch((240/220/110V),

10.)s :-(without FM)shortwave(240/220/110V),no tape selector,

1980
1981
1982

differences between the victor and jvc versions:

only 3 bands instead of 6 and no counter memory

RC-550, massive portable power - 10 watts RMS. 3-2 way speaker system, swivel mike on top, 5-LED peak indicator and multi-way mixing facility, 25 cm woofer, 5 bands: FM, MW, LW, SW 1 and SW 2. 49,8x35,6x15,6 cm. 110-240 v., 50/60 cs. or 8 batteries . $287,50