This is a great pre for vocals! It is very warm and fat when you kick up the input past half way. Before half way it is a rather clear and transparent pre but push the input and hear the sound of color. The only reason i give this a 4.5 is that after three quarters or even a little more on the input it just simply starts to distort a tad to resemble more tuby sound but i find it just overkill. But the sweet spot is between half and 3/4ths the way turned up on input and it is wonderful and rich.
I like the hi-z for my electric guitar. This pre was worth every penny