SWR SM 400 or SM 400 S ?

[BassPimp66]

I just saw this eBay link. It is advertised as a SWR SM 400 S.
I note there is no"transparency" button on the pic, which makes me think it's a SM 400, the older version.

Any thoughts?


http://www.ebay.co.uk/itm/SWR-400S-BASS-AMP-PRE-FENDER-AWESOME-/281029133645?pt=UK_MusicalInstr_Amplifiers_RL&hash=item416ea4454d

[brensabre79]

It also says Pre-Fender so my guess is its pretty old...