Review on Bluetooth Preamplifier Headphone Control Receiver by Marcus Powell

This is a great sounding tube preamp. The first one I received was defective (item looked used). But when functional and properly configured, it's a cool thing. This greatly improved my soundstage and sounds open and wide. It's enough to power my hd600 headphones. Bluetooth clarity is great. I was skeptical but this preamp is great. The remote control could be better, but it does the job. I just wish he didn't have to use those pesky button cells. All in all, if you are looking for a remote controlled tube preamp, this is the one you should consider.