xDuoo MT-603 Multichoice Pre-amp (Apos Certified)

$82.49 $109

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This is an Apos Certified product. That means it's refurbished, like new, eligible for our 45-day return policy, carries an Apos Certified One-Year Warranty, and ships from our US facility. Currently, Apos Certified products are only available to customers with a US shipping address. We appreciate your understanding as we aspire to expand our offerings to a broader audience in the future.

An Airport For Your Aux Cables

If you’re swimming in aux cables from all of your analog devices, you’re going to love the xDuoo MT-603. Connect all of your analog sources for fast and convenient switching, while enjoying the benefits of tube amplification. 

3 RCA input ports

Connect a turntable, CD player, cassette player, radio, or other RCA-equipped unit into one of the MT-603’s four RCA inputs and then run them to a single amp. 

Warm tube pre-amplification

There are many benefits to tube pre-amplification, like boosting a weak signal before it reaches your amplifier or adding the warm tube sound to a solid state amplifier. The MT-603 uses a nine-pin 12AU7 vacuum tube. A classic of the tube world, the 12AU7 is easily replaced and rolled. 

Toneluck switches

Chunk. Clunk. Is there anything more satisfying than analog switches? Enjoy highly-durable, highly-satisfying switching with the MT-603’s TONELUCK switches. 

Aluminum alloy shell

There’s more than meets the eye with this pre-amp. A sandblasted aluminum alloy shell is a delight to operate, providing long-lasting protection and style. 

Product highlights

  • 3 RCA inputs
  • Sweet tube sound
  • TONELUCK analog switches
  • Professional capacitors
  • Gold-plated RCA ports
  • Aluminum alloy shell


  • Inputs: RCA x3, 3.5mm x1
  • Outputs: RCA x1
  • Tube: 12AU7
  • Power supply: DC12V/2A
  • Frequency response: 10Hz - 40kHz (±0.5dB)
  • THD+N: ≤0.01%
  • SNR: 100dB
  • Gain: 0dB
  • Size: 4.7 x 3 x 1.5” (12 x 7.8 x 4cm)
  • Weight: 0.79lbs (0.36kg)
Apos Certified

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