Multiple Choice Pre-amp: 4 audio inputs, one audio output. The sound is processed by the tube, make the sound sweet and soft ^^ Multiple audio inputs, switch different audio sources at any time: With 4 audio input ports, which inputs can be selected through the switch, and different audio inputs can be switched at any time to experience different fun ^^ 12AU7
Tube: The sound is processed by the 12Au7 TUBE, make the sound sweet and soft ^^
TONELUCK switch: Excellent hand feeling, durable ^^ MT-603 is a multi-choice tube preamplifier with 4 audio inputs. You can select one of the inputs through the selection button, and the 12AU7 tube will do audio processing, and then output to your amplifier to improve the sound quality. It is a good choice for users who have multiple audio sources and want to switch to different audio sources to listen at any time.