The ProD2 from Radial Engineering is a high-quality, stereo, ultracompact passive direct box, designed for electronic keyboards, guitars, bass, and drum machines.

The unit features dual custom-made transformers that are able to handle high levels without saturation and has an exceptionally linear frequency response from 20 Hz to 20 kHz, making it ideal for electronic musical instruments and audio equipment. Also featured on each channel are -15 dB pads for high-output sources and ground-lift switches to troubleshoot noise from ground loops.

A 14-gauge welded I-beam inner chassis and outer shell greatly reduce the possibility of torque stresses being applied to the PC board. A full-bottom, no-slip rubber pad works double-duty by providing protection from electrical shock and making sure the ProD2 stays put.