Each surface type has its own unique features & advantages. The Aluminum surface features a higher pitched "ping" sound in the front-end/beginning of the yelp. Designed to call soft, but also has the ability to get extremely loud and can produce high-pitched yelps and cuts to really reach out and cover a lot of ground when calling.
Aluminum is a mid-range call in terms of ease of use, when surfaced correctly and often.
Featuring a Glass Soundboard that reverbs the sound produced in a crisp, clear way allowing for versatile sound production.
