The J33 from Radial is designed specifically for use with turntables and is a combination RIAA turntable preamp and active direct box. This allows vinyl albums (LP's) to be connected directly to a microphone preamp in a mixing console. The unit is ideally suited for archiving, sampling, scratch performances and DJ mixing when the highest possible sound quality is required.

The J33 is designed for use with magnetic cartridges only (the box does not support active cartridges) and the choice of outputs makes the unit very flexible. It can feed a hi-Z input such as a DJ system, and a low-Z input such as a pro-mixing console at the same time. It can be used solely as an RIAA preamp with hi-fi equipment or as an RIAA preamp and direct box combination.

The J33 may be powered with 48V phantom when used with a mixing console, or with the included power supply when phantom is not available. Housed in a heavy-duty enclosure that makes it impossible to torque the PC board, the outer shell of the J33 features a book-end design that protects the connectors and switches.