just my 2 cents worth... my church uses a vox.. can't really remember the model... apparently after some use (was still quite new), the input jack just collapsed in... apparently the inlet that holds the jack input is made of plastic. unlike other amps which are usually metal...
this could be an isolated incident, but just be careful when u use it, cos they had to open the electronics to fix back the jack input... the sound is good though.. very clean sounds.. only just this prob so far... hope it helps...