xDuoo MT-604 Headphone Amplifier

Compact and powerful, the xDuoo MT-604 gives listeners the best of both amps—tube and transistor—to deliver full-bodied audio to any pair of headphones. Four 6J1 tubes act as preamps and work in conjunction with a transistor Class A buffer circuit to create warm and musical tones bolstered by speed and dynamics. Completing the MT-604’s signature sound, Japanese Rubycon coupling capacitance pairs with Nichicon main filter capacitance to optimize clarity across all frequencies. Despite its compact build, this palm-sized amp outputs a  maximum output of 2,000 milliwatts—enough for even the hardest-to-drive headphones. XLR and 4.4-millimeter balanced outputs ensure low-noise listening, while independent left and right channel volume knobs give you greater control over your sound.