The Grace Design SB-30 spacebar is a Stereo Microphone Positioning System with a 30 cm bar.
The Spacebar microphone positioner allows for precise and repeatable setting of microphone capsule spacing, angle of incidence, and rotation around the x axis. With precision scales for angle and distance engraved on the Spacebar components, it becomes easy to make perfectly measured and repeatable stereo microphone setups.
As well as being able to precisely set microphones in standard stereo configurations (i.e. XY, ORTF, NOS, and AB 50cm), the Spacebar allows for exact settings through the entire continuum of angle and spacing. This allows the user to adjust the stereo microphone array and tailor the pickup field to suit virtually any recording environment.