Roll Music Valvop 500-Series Tube Opto Compressor  From Roll

The RMS-MC5 Valvop joins the RMS-5A7 Tubule, an all-tube microphone preamplifier module. Both products use the same all-tube, transformer-coupled amplifier circuit in a single 500-series modular format. The tube is powered by a 220V voltage generated inside the module by a proprietary circuit. The circuit is carefully designed to produce adequate voltage for the tube circuit while keeping within the narrow power consumption limitations of the 500-series format. The Tubule has VPR Approval for use in API’s full range of LunchboxTM modular enclosures, while the Valvop’s approval is pending. Both are fully compatible with all known standard 500-series enclosures. Both are built to last, fully enclosed in a rugged steel chassis with robust controls and long-life components.

Controls on the Valvop include a rotary Threshold control pot, 12-position stepped makeup gain switch, and pushbutton switches for bypass and for our unique “PDR” or Program Dependent Release mode, which provides a dual time constant that recovers quickly after compressing transients while releasing more slowly after long passages of loud program material. Gain reduction indication is provided by a single high-visibility LED.