What's the difference between these two Honda radios?

Looking at replacing my current Honda radio and wondering if anyone
can tell me what the difference is between the 39100-S84-A300 and
39100-S82-A300?
Very little information on the web. In fact, it someone knows a site
where I can find manuals online, that'd be great!
As always, thanks for the input.

 

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It's easier to just tell us what vehicle (year, model) they are in /
from, and what _country_ you're in. Describe the buttons or provide
LINKS to photos. The pictures at www.slhondaparts.com are usually very
vague.

'Curly'

 

wrote in @n59g2000hsh.googlegroups.com:

Manuals are unlikely to tell you anything about the differences. For that
you'd need to speak to somebody who has actual hands-on experience with
both radios, and that usually means either a dealership technician or an
auto radio shop.

 

OK.
Here is a link to a 39100-S82-A300
http://cgi.ebay.com/Honda-Accord-Civic-CR-V-6-Disk-CD-Player-Tape-Combo-OEM_W0QQitemZ230107487910QQcategoryZ64577QQcmdZViewItem#ebayphotohosting

And here is a link to a 39100-S84-A300
http://cgi.ebay.com/98-00-01-02-Honda-Accord-CR-V-Civic-radio-6-CD-Changer_W0QQitemZ330102495227QQcmdZViewItem

Couldn't tell you what vehicles they come from since they are being
sold by online salvage yards. But they fit a variety of the same
Honda's.
Physically, they look identical to me. The only thing I've come across
is someone selling one and making reference to an equilizer but that
could be someone calling a treble and bass adjustment an equilizer.
Thanks.