Xduoo MT-604 Balanced Headphone Amplifier W/Ge Jan 5654 tubes

Comes loaded with General Electric Jan 5654w tubes in place of the generic Chinese 6j1 stock tubes/ with power supply and boxes

Top highlights 

1. Warm tube sound combined with powerful transistor drive

1. Powers headphones from 16Ω to 600Ω impedance range

1. 2000mW output handles demanding headphones effortlessly

1.  Summarized from product information

• About Tube + Transistor Hybrid amplifier: 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
• Tube Amplifier: Adopt four 6J1 tubes for pre-amp, making voice sweet and exquisite
• Transistor for Class-A amplifier: Adopt transistors for class A buffer, output power up to 2000mW,can easily drive many kind headphones (Suitable Headphone Impedance: 16Ω~600Ω)
• XLR and 4.4mm balanced input/output: It has XLR and 4.4mm balanced input, 4-pin XLR and 4.4mm balanced output, rich and diverse interfaces, suitable for many kinds of balanced headphones
• Independent adjustment of left and right channel volume: This unit is designed to adjust the volume of the left and right channels separately to reject the sound bias problem
• Built-in Mute Circuit: It built-in relay for mute circuit when turn on amplifier to avoid POP noise and make sure the tube is worked at its best condition
• Top highlights 

1. MT-604 is a small balanced tube headphone amplifier. It adopts four 6J1 tubes for pre-amp with warm timbre, the post-amp is adopted high quality transistors for class A buffer,which can easily drive various low-impedance headphones and greatly enhance the sound field dynamics. 

The coupling capacitance applies Japanese Nichicon for high-end audio creating clear, sweet sound. The combination of the tubes and transistor bring up the sweet note of the former and the sense of speed of the latter, fully integrating the advantages and charms of both. 

Science knowledge 

About tube transistor hybrid amplifier: 

Tube, has its unique sound, the sound is sweet and soft, warm and durable, the music feels good, and the atmosphere is good;its shortcomings are the transient response to high frequency, the resolution is not as good as the transistor amplifier, listening to some symphony and other songs Especially obvious. 

Transistor,the advantages of transistor power amplifier are large dynamics, fast speed, high resolution and strong driving force,which is especially suitable for the performance of more dynamic music; its shortcomings are low frequency. The sound is not soft enough, and the high frequency sounds are sharp and dry. 

Therefore, the pre-amp used tube and post-amp used transistor, combining the advantages of these two power amplifier circuits to achieve the ideal musical effect, you can devote yourself to the joyful atmosphere of music. 

Product Features 

Adopt four 6JI tubes for pre-amp, making voice sweet and exquisite. 

Adopt transistors for class A buffer, so it can easily drive any kind earphones with strong load capacity. 

Use ELNA capacitors specially designed for audio as coupling capacitors. 

Adopt Nichicon capacitor specially designed for audio as the filter capacitor. 

It built-in mute circuit when turn on amplifier to avoid POP noise and make sure the tube is worked at its best condition. 

Use aluminum-shielded case to prevent external interference noise 

Parameters 

Power Supply: DC12V/2A 

Output Power: 2000mW(1KHz,32Ωload) 

Dynamic Range: 85dBA(32ohm) 

Frequency Response: 10Hz~60KHz (±0.5dB) 

Suitable Headphone Impedance: 16Ω~600Ω 

THD+N: ≤0.01% (1KHz,32ΩIoad) 

S/N: 115dB 

Gain: +15dB 

Size: 17*10*6cm 

Weight: 0.55kg 

Package List 

MT-604 

AC Cable 

Adapter 

User's Manual 

Warranty Card