The XDUOO MT-604 Balanced Tube Headphone Amplifier 6J1 Pre-amp XLR/4.4MM Balanced Input/Output Tube + Transistor Hybrid Amplifier is a device that adopts four 6J1 tubes for pre-amp and transistors for class A buffer. The front tube amplifier and rear transistor combine the advantages of two amplifier circuits to achieve the ideal sound effect and make you immersed in the happy atmosphere of music.
The MT-604 has two input options and two output options. The two input options are the two 3-pin XLR inputs at the rear and a 4.4mm balanced pentaconn input to the fore. On the other hand, there are also two possible output options in front, which include a balanced 4-pin XLR and the 4.4mm pentaconn connection.
