xDuoo MT-601s Tube Class-A Headphone Amplifier

$78.32 $89

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Time for a warm up

The xDuoo MT-601s combines the sumptuous warmth of a tube amplifier with the dynamics and speed of a transistor circuit for an amp that can handle any genre thrown its way. It’s a great purchase for anyone looking to pair the old-school tube sound to single-ended headphones, no matter their impedance.

The MT-601s is a reissue of the MT-601 featuring a 12AU7/ECC82 tube instead of a 6N11/E88CC tube.

Tube + Transistor

A common complaint about tube amplifiers is their lack of high frequency response and resolving power. To overcome this, xDuoo added a rear transistor circuit capable of large dynamics, high speed, and resolving power. Together, they offer the best of both worlds.

Class-A amplifier

The MT-601s is a class-A amplifier. Using simple circuits that draw the same amount of current and consume the same amount of energy whether receiving a signal or not, this is the most straightforward of amplifier types. It isn’t subject to electromagnetic interference caused by digital components, so its total harmonic distortion and signal-to-noise ratio are exceptionally low.

Tubes will roll

Adventurous audiophiles will appreciate the ability to swap the stock tube for other tubes. Each tube has a different sound signature, adding or subtracting qualities like warmth, detail, and soundstage. It’s a fun way to play with the sound signature of a single amp, often for less than $30 a pop. Just be sure to find a reputable dealer of tubes before buying.

Doubles as a preamplifier

The minimalist backplate provides only one RCA input and one RCA output. The latter can be used to connect the MT-601s to another amplifier or active speakers, affording either the sonic benefits of tube amplification.

Product highlights

  • Tube + transistor power
  • Class-A amplifier
  • Allows for tube swapping
  • Amp can be used as preamplifier


  • Power supply: DC24/2A
  • Output power: 200mW (32Ω)
  • Dynamic range: 85dB (32Ω)
  • Frequency response: 10Hz-60kHz (+/-0.5dB)
  • Suitable headphone impedance: 16-600Ω
  • Gain: +18dB
  • Size: 4.7 x 3 x 1.5” (12 x 7.8 x 4cm)
  • Weight: 0.79lbs (0.36kg)
  • S/N: >100dB
  • THD+N: ≤0.01% (1kHz & 32Ω)

What’s included

  • xDuoo MT-601s
  • AC cable
  • Adapter
  • 6.35 to 3.5 converter
  • User’s manual
  • Warranty card

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