Enrico Student Extra Solid 3/4 Double BassEnrico Student Extra Full Solid Bass Outfit. The final step up in the Enrico bass range is the all solid wood Enrico Student Extra. Intended for the intermediate to advanced student, the Student Extra delivers the rich and complex tone you can expect from an all solid bass. Over years of regular playing you can expect the sound quality of a solid instrument to open up and sound better and better as the wood ages. The sophisticated tone of a solid bass