The Tube MP is the world's most popular external tube microphone preamp. Whether you're working with a four-track, hard-disk, or digital multitrack recorder. Tube Mic Preamp w/ 48V PRO RESULTS Tube MP's TEC award nominated design will allow you to obtain professional recording studio results at a fraction of the cost of comparable equipment. The hybrid design of the Tube MP allows it to add warmth and fatness to a signal while maintaining exceptionally low-noise and high quality. While its primary application is to be used with a microphone, the Tube MP is an exceptional direct box - impedance matching, amplifying and improving the sound of any instrument plugged into it.Superior Performance The usage of external mic/ line preamps has become increasingly popular over the past several years. The Tube MP offers superior performance and sound quality to the "on-board" preamps found in today's low-cost mixers and multi-trackers. It's sound has been consistently favored over other products costing upwards to ten-times its price. Professional quality sound combined with professional features like: a 12AX7a Tube, phantom power and Phase Reverse, are what have made the Tube MP a staple in thousands of studios worldwide. For a minimal investment, a Tube MP can provide the single largest improvement to the sound of your studio.