Like the title says this speaker is tiny plus weatherproof like the Discovery ...works great with frequency range matching the Tx5oo pretty well ...works well for CW maybe a little narrow? for SSB? But now I don't have to lug the big mic if I want to listen on speaker vrs earbuds. Used a TRS stereo plug wired Tip and Ring only to speaker! Plenty volume for personal use. Not room filling mind you but good enough to dig out the weak ones!? 73, Steve/wG?AT