B&K St-202 vs St0202+ plus


I recently bought a b&k st-202. Its black with blue and red lettering. Ive since decided to get another to bi-amp some speakers I have.

I read the lable on the back of my B&K, it just states the modle number as ST 202.

Ive seen other amps here and on ebay, claiming they are st 202 + modles, thought hey look just like what I have by the looks.

Im curious how B&K labled the ST202 Pluses? Or are all the blue and red lettering vesion (not the really old gold) all st-202s?
spyonu2007
Thanks for the replies guys, but are the ST202 pluses, labled as such? Like on the modle number in the front, does it say ST-202 + or ST-202 plus? Or pehaps on the back? The reason I ask, Ive seen some folks selling what I think is an ST202 that looks identical to mine, but are claiming that its a plus modle. How can you verify that it truely is?
Disregard, I looked at the pics of a 202+ on bigger monitor, its clearly labled on the front with the plus sign. Thanks again.