Pro-Ject Audio Phono Box S3 B Phono Preamplifier - True BalancedThe Phono Box S3 B is a proficient phono preamplifier that offers a fully balanced design in a neat, small package. This tiny chassis is packed to the brim with high end features. One of those is the new True Balanced Connection. At Pro Ject, balanced connections were previously exclusive to the RS range of products until now. The Phono Box S3 B brings those features to a remarkably accessible price point.