Finishing and ideas.

I'm in the process of finishing my cabinet, it looks like a brick because it's so square, lol. What can I do to give it a good finish? Varnish is out of the question because I used plywood and I think the wood is kind of ugly. I was thinking of wrapping it in black leather or something similar.I'm trying to get a finish similar to Marshall or Vox cabinets, you know?Does anyone have any ideas?
 
Look for a supplier of 'Tolex' which is a waterproof, vinyl fabric used to cover speaker cabinets.

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Black Bronco Tolex