This is a brand new,"Build To Order" hand-wired Hairball Audio Lola microphone preamp with the Jensen-style 990 op amps option (there's a BA-512 "Neve" style op amp option available also, for a little more, I have another listing for that)
I usually have to build these units for you, but sometimes I have one is stock. Ask me.  
 
The Lola is the best of both worlds, designed to fill the gap between HiFi and colored. It's clean and open while adding a thick richness, it’s unlike anything else in your rack.

All soldering is done with WBT 4% Silver Solder. I use Blue Locktite on the mounting screws, so they are secure and can't come loose over time.
It is fully tested and meticulously calibrated (calibration photos included), according to Hairball's calibration process, accurate to nearly a thousandth of a volt.