The Rolls MB15b ProMatch is an inexpensive line level audio device that converts consumer level stereo RCA signals to balanced XLR professional line level signals, and vice versa. The unit is useful for video duplication and audio recording studio applications; for example, connecting a consumer VCR to a professional video deck, or an off-the-shelf CD player to a professional mixing console or recorder.
The MB15b ProMatch has 2 XLR inputs and stereo RCA outputs on one side, labeled 1, and stereo RCA inputs and 2 XLR outputs on the other side, labeled 2. Each side has stereo level controls, and an LED indicates that power is applied to the unit.
Additionally, the unit functions as a balanced XLR line level control. By adding a stereo pair of jumper cables between the 4 RCA jacks (connecting ins to outs), the level controls may be inserted into any balanced XLR line.
Bidirectional line level audio signal converter and stereo direct box converts from consumer to professional and professional to consumer levels
Allows for connection of consumer level products such as camcorders, CD and cassette players to professional level recorders, mixing consoles and signal processors
Standard stereo XLR and RCA connectors, dedicated stereo level control knobs for inputs and outputs
Double duty functionality as balanced inline level control, achieved by patching RCA inputs and outputs together