BEST MALE VOCAL EVER

Elvis Presley. He conveys the appropriate and believable emotion to most any song. (during his prime anyway)

John Lennon will be on top of my list. This is really a hard question since there are a lot of great male singers with a good voice. 

TOPAL,  most dynamic male voice ever...

TOPOL is the correct spelling of that great mans name.  Sorry about the FU.

WHAT, no love for Loudon Wainwright III? https://www.google.com/search?ei=JNM8XPzWO8-5ggeagp6wAg&q=loudon+wainwright+iii+dead+skunk&o... I suppose, none of you cared for Tiny Tim, either? https://www.youtube.com/watch?v=wMbQsKJ64S0 CLASSIC(though the, "MALE VOCAL" part is debatable)!

A few of my favorites:

Johnny Cash
Layne Staley
Steve Perry
Maynard James Keenan

Frank
Tony Bennett
Andy Williams
Elvis
Levi Stubbs
Smokey Robinson
Bill Medley

I like male vocalists that can really express the emotion.They are usually not technically great but they touch your soul.Robert Plant,Joe Cocker,John Hammond.....

Back in the mid 90's at a press conference, Pavarotti was asked who he thought was the world's greatest singer, his answer.." Frank Sinatra", and for good reason. Sinatras' mono Capital recording's from the 1940's is when his voice had the greatest quality in terms of range, vibrato and length of breathe. But tragedy struck in 1950 when he tore his vocal cords causing severe hemorrhaging and could not sing for several months, and his voice was never the same. If your one of the lucky ones that has some of his Christmas albums from the 40's, they are truly golden treasures.

For me:

Michael Jackson 

also, 

Phil Collins 
Goerge Michael 
Josh Groban