$100 + shipping
Not much to say about these. Mainstay of acoustic preamps. Hard to get a bad sound with these. In my experience, nearly plug and play. Occasionally I'd take out some bass or add some sizzle. Indispensable tool to tame the feedback. Notch filter is what I used the most, and phase reverse. Here's the info from the site:
Acoustic DI & Preamp with 5-band EQ
Thanks to its studio quality performance, powerful tone shaping EQ and rock-solid reliability, the Para DI has become an indispensable stage tool for countless musicians around the world. This roadworthy box effortlessly tames the stage and enhances any acoustic pickup for a fuller, more complex sound. The Para DI features a 5-band EQ with a tunable midrange and notch, variable gain control for passive or active pickups and a high-quality DI output for a pristine signal to the board.