xDuoo MT-604 Balanced Tube Amp Now Available at Apos Audio

Back in January, xDuoo released the MT-602, a twin tube amp that blew us away with its powerful output, rakish good looks, and forward-thinking feature set. It doubled the power output of its predecessor, the MT-601, but was it double the price? Not even close. It was just ten bucks more. 

Now xDuoo’s back with another doubling: the MT-604. With double the tubes and double the channels of its predecessor, it begs the question: is it double the price? Once again, not even close. For sixty extra bucks, you get four tubes and independent L/R channels for a fully balanced tube amp experience.

Features at a glance

  • Tubes + transistor hybrid

  • Fully balanced amp

  • Four 6J1 tubes

  • Class-A amplifier

  • 53% more power than MT-602

  • XLR and 4.4mm balanced outputs

  • Independent left/right volume adjustment

  • Built-in mute circuit

  • Interference-blocking chassis

  • Switchable tubes


Sand-blasted aluminum alloy chassis


Four 6J1 tubes, 2,000mW of output power


Independent left/right channel volume adjustment knobs


L/R XLR inputs


Looks super cool


Head on over to the xDuoo MT-604 product page for more details, and if you need more information please contact our dedicated Support Team via live chat online or email us at support@apos.audio.

As with all purchases, when you buy from us you get the Apos Promise for Free Priority Shipping, an Extended 2-Year Warranty, a 45-Day Return Policy, and our 30-Day Lowest Price Match.