The American Recorder Technologies ADJUSTABLE 2.0 acoustic monitor panel for trumpet gives you complete control over your instrument's volume and projection. You can open or close the twin adjustable panels to increase output while decreasing volume or increase volume with less output, depending on your needs. Handcrafted from high-grade acrylic, these panels attach easily to most microphones and are virtually invisible to audiences and cameras. With precision-cut, polished edges and UV protection to prevent yellowing, the ADJUSTABLE 2.0 panels are built to provide years of reliable performance for the serious musician. Whether you need to cut through a mix or want a more focused, controlled sound, the ADJUSTABLE 2.0 acoustic monitor panel lets you shape your trumpet's tone with the turn of a dial.