I've been using the Neumann M 147 Tube condensor microphone for about two years and like most Neumann mics, it is one of the best in its class. The sound quality of the M 147 is warm and rich, which makes it great for all types of instruments and applications, but especially for vocals. I have used it on everything from lead and back up vocals, to simply setting it up in the middle of a room as a general room mic. Its warm tone quality is a result of tube that gives it its unique sound. In addition to the previously mentioned applications, I like to use this for electric guitar, saxophone, trumpet, and drum overheads, but the huge inherent tone quality that comes from the M 147 makes it a great choice for just about any application, which makes it a great all purpose microphone. The price of this microphone will shy most away from this, as it is really aimed toward professional studios. This being said, if you are a home studio owner looking for a knock out microphone to be your go to in all applications, the M 147 is a great choice. It has the Neumann seal, so you know you are going to get a great microphone. It covers the full frequency spectrum which makes it an overall great all purpose microphone. I love the way the Neumann M 147 sounds and it is just another prime example of why Neumann is the best in the business when it comes to microphones.