The Pacifica offers tons of gain and sounds great on everything I've tried it on. Adds so much depth to any mic I plug into it and takes EQ and compression really well. This thing picks up all the low end you could ask for and is a nice fast preamps. Read more
The PAD darkens the tone a little bit and is a nice fit for overhead mics on a drum kit. Bass guitar is solid through this, mic'd or DI. Guitars - if you're tracking heavy electric, acoustic, or anything in between - you will not find a better preamp (your personal preference may be for something else, but this will be a top competitor everytime). The sound is fairly clean, but not entirely neutral. That said, from vocals, acoustics/electric guitars, to drums - the character of this preamp seems to compliment everything really well. Dynamic, Condenser and Ribbon mics all work extremely well with this pre.
Whether the Pacifica is your first 'higher end' preamp (above stock interface preamps anyway) - or you've used all kinds of boutique pres .... IF you don't like the Pacifica, YOU are doing it wrong.