Vai uses a fernadez sustainer to play whispering a prayer but my only option is a sustainer pedal
will it do the same job ? (I want a low-gain sound just like the original song version )
if yes which is the best pedal to choose ?

nope. don't think so, anyway.
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Quote by K33nbl4d3
I'll have to put the Classic T models on my to-try list. Shame the finish options there are Anachronism Gold, Nuclear Waste and Aged Clown, because in principle the plaintop is right up my alley.

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Presumably because the CCF (Combined Corksniffing Forces) of MLP and Gibson forums would rise up against them, plunging the land into war.

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Et tu, br00tz?
nope. his tone comes from plucking the string ever so gently, then having the sustainer physically rev it up to a higher magnitude of oscillation.

you could try an e-bow. it's a bit harder to use and you wouldn't be plucking the string at all, but that's the closest you'll get.
a Boss Slow Gear might get you within passable range of the sound, but when it comes to sting dynamics, it's usually not so easy to replicate an effect through an alternative approach.

A warning about a Sustaniac pickup tho. IMO it's pretty much a one trick pony.be prepared to forego your neck tones for a device with limited applications.
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