xDuoo MT-604

New xDuoo MT-604 - MT-604

xDuoo MT-604 XLR/4.4mm Balanced 6J1 Tube High Performance Headphone Amplifier


Balanced tube headphone amplifier

Adopt four 6J1 tube for pre-amp, making voice sweet and exquisite. Adopt transistors for Class-A buffer, strong output power can easily drive any kind earphones.

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 has its unique ”tube sound”, sweet, soft, warm and listenable voice and good musicality and atmosphere; but its high-frequency transient response and resolving power are worse than that of transistor especially when listening to symphony.

“Transistor” has the advantages of large dynamics, high speed, strong resolving power and strong driving force, especially suitable for the songs with large dynamics; but it is not soft enough and its high-frequency sound is sharp and dry.

Tube amplifier

Adopt 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.

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.

Enthusiast capacitance

Adopt the special enthusiast Japanese Rubycon capacitance as the coupling capacitance, have transparent and sweet sound.

Adopt the special enthusiast Japanese Rubycon capacitance as the main filter capacitance, have smooth and warm sound, and splendid high frequency.

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.

Sand blast textured panel, has a simple appearance

Sand blast textured panel and hard aluminum alloy shell are slap-up and can resist external interference effectively.


Model: xDuoo MT-604

Power supply: DC12V/1A

Output power: 2000mW(1kHz, 32ohm load)

Frequency response: 10Hz-60kHz(±0.5dB)

Suitable headphone impedance: 16-600ohm

Gain: +15dB

THD + N: ≤0.01%(1kHz & 32ohm load)

S/N: 115dB

Size: 17*10*6cm

Weight: 0.55kg



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Due to the impact of the COVID-19 pandemic, global international shipping will delays. The delay at our Hong Kong post office is very serious, so we have changed to other fastest or most efficient international shipping. Now the normal estimated delivery time may be delayed by about 1-2 weeks. In some countries where is higher free-tax rate, we will provide free courier service as much as possible.

Free Shipping

All listed items will be shipped though Registered Airmail with tracking number if there is no extra shipping method option listed or shipping description in the product page.

Economy shipping: Will be shipped without tracking number.

Registered Airmail : Will be shipped via such as Hong Kong post , Deutsche Post , Netherlands Post , Singapore Post, you can leave us a message if you have any requirement about the shipping method .

It will be shipped via Hong Kong Post by default, Europe countries can choose to be shipped via Deutsche Post or Netherlands Post, it is also FREE, pls leave us a message if needed.

Express service: Will be shipped via DHL/EMS/UPS/FedEx

  • Views: 383
  • Brand: xDuoo
  • Product Code: MT-604
  • Availability: In Stock
  • $169.00

Tags: xDuoo MT-604