Check out the EMPRESS PARAEQ. It's a 3 band Parametric with a separate 30DB switchable boost, 3 ways electable input pad levesl so you can set it up for up front of and amp or in the loop. I highly recommend it. It has a very low noise floor as well, it is pretty much a modern Furman PQ3. I A/B'd the empress next to my Furman and it sounded every bit as good and a little more quiet.
You can pick them up in the 180-200 range. I had the Boss a few years ago to try it and it was not as high quality as the Empress.