VTB Active Volume & Tone Controls
The VTB controller can be wired to Matrix Natural, Infinity, Fishman Powerjack, Active Resophonic, Martin Thinline Gold Plus, and Martin Activejack preamps.
This controller fits exactly in the holes vacated by an older Fishman AGP system, but it is not a complete preamp system. The controller must be used in combination with one of our jack mounted preamps (listed above). The VTB is only suitable for installation on Matrix Natural or Gold Plus preamp revisions 4.0 or above.
Professional installation recommended.