Avalon Design was among the first companies to make high-end, "boutique" outboard gear for professional recording studios. Their VT-737SP vacuum tube channel strip is a smashing success, with tens of thousands of units sold and used on an unthinkable amount of hit records thanks to it's huge, clear tone and sound shaping options. Mixing and mastering engineers have adopted their compressors to give that final glue to a track, and bass players around the world have rallied around the U5 direct box as the end-all-be-all.