I offered this wonderful micro for Christmas 2011. So I had time to try it during my recording sessions. The verdict? Pure killer! I worked for many years with a vintage U87 but the Flea 47 coupled to a preamplifier SSL Alpha Channel, this is just wonderful.
At the feeling here is what I can say a lot of presence (dynamic) output, the midbass is round (250 Hz), this medium well with this typical but so sweet a U47 distortion.
The top end is superb: the breath of the voice is beautifully observed, well developed with pretty non-aggressive treble.
To conclude, if you are looking for a very present voice proximity and light-colored, look no further: I also tested on female vocals and it really is a treat.
I'll end this review of a story: A few days after receiving my package, officials at Flea called me from Czech Republic to see if I had received the microphone and if all went well! Service: 10/10!