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xDuoo
xDuoo MT-601 Tube Class-A Headphone Amplifier
Dang it.
Unfortunately, this product has reached its end of life. Thankfully, we have the perfect replacement in the xDuoo MT-601s, which is the same price and functionally identical. The only difference is that it uses a 12AU7 tube instead of a 6N11 tube.
Time for a warm up
The xDuoo MT-601 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.
Class-A amplifier
The MT-601 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.
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.
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-601 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-601
- AC cable
- Adapter
- 6.35 to 3.5 converter
- User’s manual
- Warranty card