I'm tracking jazz bands with a single stereo mic, and I always need to add a pit of reverb on my recordings. After having tried many plugins, I finally went for the RZM. It's different. It's great at making a realistic room sound. It's the only reverb with tubes. It sounds great, you can even drive the tubes a bit to get some wonderful saturation. This is a special device. If it's what you need, it's probably the only device that can do what it does.