{"product_id":"apos-certified-xduoo-mt-604-balanced-tube-headphone-amplifier","title":"xDuoo MT-604 Balanced Tube Headphone Amplifier (Apos Certified)","description":"\u003ch1 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eFully-balanced tube amp\u003c\/b\u003e\u003c\/h1\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003exDuoo doesn’t do incremental improvements. They evolve by leaps and bounds. The MT-604 is a Class-A tube amp that doubles its predecessor’s tube count and channels, making for a fully balanced tube amp experience. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eClass-A amplifier\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eThe MT-604 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.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003e53% more power than the MT-602\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eThe MT-604 outputs up to 2000mW (32Ω) of power. That’s 53% more power than the MT-602--enough to drive even the HiFiMAN HE-4. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eTube + transistor\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eA 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. Tubes + transistor: the best of both worlds. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eXLR and 4.4 balanced input\/output\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eThe MT-604 is a fully balanced amplifier. Plug in any source into its XLR or 4.4mm balanced inputs, and enjoy rich, unhampered sound from its XLR or 4.4mm balanced outs. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eIndependent left\/right volume adjustment\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eSound bias--the phenomenon of one driver being louder than the other--is a thing of the past with the MT-604. Independent left and right volume adjustments let you control each channel separately, ensuring perfectly equal volume across both headphone earcups. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eBuilt-in mute circuit\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eAnyone who’s ever plugged in their headphones before turning on their amplifier knows that many amplifiers make an ear-splitting “pop!” noise when turned on. Thanks to a built-in mute circuit, the MT-604 prevents this from happening, saving your ears and your patience. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eInterference-blocking chassis with sand-blasted texture\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eThe aluminum alloy chassis offers a rugged defense against bumps, bruises, and electronic interference. The sand-blasted gray shell beautifully complements the striking red dials and atomic-era aesthetic of the tubes. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eTubes will roll\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eAdventurous audiophiles will love swapping out the stock tubes for other tubes. Every model of tube has a different sound signature, enhancing or reducing 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. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eProduct highlights\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eTubes + transistor hybrid\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eFully balanced amp\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eFour 6J1 tubes\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eClass-A amplifier\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e53% more power than MT-602\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eXLR and 4.4mm balanced outputs\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eIndependent left\/right volume adjustment\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eBuilt-in mute circuit\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eInterference-blocking chassis\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eSwitchable tubes\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eSpecs\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003ePower supply: DC12V\/2A\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eOutput power: 2000mW @32Ω 1kHz\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eInputs: XLR\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eOutputs: XLR, 4.4mm balanced\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eDynamic range: 85dBA @32Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eFrequency response: 10Hz - 60,000Hz (±0.5dB)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eSuitable headphone impedance: 16Ω - 600Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eGain: +15dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eS\/N: 115dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eTHD+N: ≤0.01% (@32Ω, 1kHz)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eSize: 6.6” x 3.9” x 2.3” (17 x 10 x 6cm)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eWeight: 1.2lbs (0.55kg)\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eWhat’s included\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003exDuoo MT-604\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003ePower cord\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eAC adapter\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eUser’s manual\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eWarranty card\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eFeatured reviews\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n \u003cp\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/JItk0SUdsu4\" title=\"YouTube video player\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" width=\"560\" height=\"315\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\"I f*****g love this thing. I f*****g love it.\" -Z Reviews\u003c\/em\u003e\u003c\/p\u003e","brand":"xDuoo","offers":[{"title":"Default Title","offer_id":46878659346607,"sku":"APS-AC-0450-1-LN","price":126.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-xduoo-headphone-amp-tube-xduoo-mt-604-balanced-tube-headphone-amplifier-apos-certified-30348609618091.jpg?v=1778011946","url":"https:\/\/freshized.com\/products\/apos-certified-xduoo-mt-604-balanced-tube-headphone-amplifier","provider":"Freshized","version":"1.0","type":"link"}