my 6 month old kitten sounds like Gizmo [from gremlins] when he meows, could...

[aussiewife&mum]

...there be a problem? at the start i thought it was cos he was young,,, but he hasnt grown out of it, hes healthy otherwise,, what could be wrong with his voice? it dosent make a meowing sound, just a sweet gurgle sound, whats up with him? help!