{"product_id":"fiio-k19-desktop-dac-amp-open-box","title":"FiiO K19 Desktop DAC\/Amp (Open Box)","description":"\u003ch2\u003eInnovative, 31-band high-precision lossless PEQ\u003c\/h2\u003e\n\u003cp\u003eThe K19 features DEL (Dual Engine Limiter) technology, and through proprietary algorithms, the K19 can apply various audio effects such as dynamic range compression (DRC) and dynamic range enhancement (DRE) as well as an advanced limiter to prevent clipping. Also on the K19 is an adjustable 31-band high-precision lossless PEQ*, which supports direct adjustment of PCM 44.1k~192k audio signals without resorting to sampling rate conversion (SRC). For each band, the gain can be adjusted between a range of +12~-24dB and the Q value can be adjusted between a range of 0.4dB~128dB. And the PEQ curves don't have to be used only by you - PEQ presets on the K19 can be shared between users. Being able to import and export PEQ presets opens up a whole new dimension to sound adjustment!\u003cbr\u003e*PEQ adjustment is supported on Windows and Mac computers, as well as with the mobile control app\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Lossless PEQ\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/1_559e1a4c-00af-42b5-8aac-7a21b8e2110b.png?v=1712859880\"\u003e\u003c\/p\u003e\n\u003ch3\u003eADI ADSP-21565 with SHARC+ core\u003c\/h3\u003e\n\u003cp\u003eFor the first time in an FIIO product, the K19 flagship desktop DAC and headphone amplifier utilizes an ADI ADSP-21565 DSP chip with the SHARC+ core backed by a custom ultra-low phase noise femtosecond crystal oscillator. This DSP chip featuring a high clock frequency of 800MHz and capable of 64-bit double precision floating point calculations is what makes the 31-band high-precision lossless PEQ possible in the K19. The ADI DSP chip not only ensures that audio signals after PEQ adjustment are of high quality and with minimal distortion, it also helps to enable powerful system protection functions that safeguard both the K19 and the other devices and headphones connected to it.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp ADI ADSP-21565\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/2_b0d122ea-71ce-49ff-a0bf-510f3abee3c0.png?v=1712859906\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFlagship ESS 8-channel ES9039SPRO*2 DACs\u003c\/h3\u003e\n\u003cp\u003eInside the K19 are two of the new ESS 8-channel ES9039SPRO DAC chips, featuring the fourth generation 32Bit HyperStream architecture and capable of ultra-high dynamic range with ultra-low noise. These DAC chips allow the K19 to output clearer and richer audio with plenty of detail.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp  Flagship ESS DAC\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/3_77f1e065-7710-4279-9213-cb8b87939205.png?v=1712859935\"\u003e\u003c\/p\u003e\n\u003ch2\u003e8-channel THX AAA 788+ headphone amplifier\u003c\/h2\u003e\n\u003cp\u003eThe K19 features a new headphone amplifier design consisting of an 8-channel THX AAA 788+ headphone amp architecture working together in parallel and backed by a high-voltage power supply. The THX amp chips are connected in parallel via 2×2 groups to make up a totally balanced,4-channel amplification system. The result is enhanced transients, and high-power output up to 8000mW+8000mW with a 320 load allowing the K19 to drive all kinds of headphones with ease.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp 8 Channel THX Amp\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/4_b8d91588-fadb-4707-b3ff-5dda3ba149e7.png?v=1712859958\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDual ACCUSILICON high-performance ultra-low phase noise femtosecond crystal oscillators\u003c\/h3\u003e\n\u003cp\u003eThe K19 employs two industry-leading ACCUSILICON AS318-B ultra-low phase noise femtosecond crystal oscillators (45.1584MHZ, 49.1520MHZ), which are 100% pre-screened before being selected for use in the K19. These femtosecond crystal oscillators effectively reduce the impact of phase noise on audio signals and allow for accurate audio restoration and different sampling rates - resulting in purer and more stable sound no matter the source sampling rate.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Dual ACCUSILICON\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/5_5c8c8d8c-9a93-42dc-a1ff-420f8794ee59.png?v=1712859988\"\u003e\u003c\/p\u003e\n\u003ch3\u003eHigh-quality digital audio processing architecture\u003c\/h3\u003e\n\u003cp\u003eFor the first time in an FIIO product, the K19 utilizes a powerful quad-core FPGA as a high-definition digital signal processing center. The FPGA is responsible for handling all incoming digital signals, including Bluetooth reception and decoding, USB decoding, coaxial and optical decoding, HDMI\/ARC decoding, and DSP digital signal processing. These digital signals are directly transmitted through two sets of 12S channels to the dual ES9039SPRO DACs, ensuring minimal distortion and loss of audio signals in the digital audio processing chain.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Audio Processing Diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/6_f8ee5d9f-1a3f-4296-bfca-908f15667c5a.png?v=1712860013\"\u003e\u003c\/p\u003e\n\u003ch2\u003eNew flagship, ultra-thin die-cast unibody shock- proof construction\u003c\/h2\u003e\n\u003cp\u003eThe K19 comes with a brand new styling, made of a die-cast unibody aluminum alloy body for a totally seamless design. The aluminum alloy body is carefully polished by a multi-axis CNC machine to a quality befitting of a flagship. This aluminum alloy body not only features reduced thickness, but is also capably shock-proof. And when paired with the included stand, the K19 is simply stable!\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Diecast Shockproof Construction\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/7_120c4265-88e0-49d0-9bfd-82f0caa7e785.png?v=1712860035\"\u003e\u003c\/p\u003e\n\u003ch3\u003eA new HiFi direction, supports HDMI\/ARC\u003c\/h3\u003e\n\u003cp\u003eHDMI IN and ARC capabilities are present in an FIIO desktop DAC and amp for the first time. The K19 supports decoding from HDMI2.0 input, HDMI output and HDMI ARC audio return channel functionality, opening the doors to a new way of experiencing an immersive audiovisual experience.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp HDMI Arc Support\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/8_b200a7ef-66a2-4399-b4fa-f521ac82afde.png?v=1712860059\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSeparated and shielded circuit boards\u003c\/h3\u003e\n\u003cp\u003eThe digital and analog audio circuits of the K19 lie on separate boards for full isolation and greatly reduced interference. There are metal shields for the DSP board, DAC board, and the THX head-phone amplifier board, as a result of the digital board and module board adopting a compartmentalized aluminum alloy isolation design. These measures all help to minimize crosstalk to ensure signal purity. In addition, the honeycomb-mesh aluminum alloy body can also help to further reduce external interference, allowing you to enjoy pure, clean music.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Separated and Shielded Circuit Board\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/9_acdff5c8-a176-4528-b7e4-91fc95242b18.png?v=1712860081\"\u003e\u003c\/p\u003e\n\u003ch2\u003eCarefully designed power supply\u003c\/h2\u003e\n\u003cp\u003eBuilt into the K19 is a new generation 40W lower-noise, high-efficiency, long-lasting industrial-grad power supply. This power supply supports an ultra-wide range of input voltage (85-305VAC) and can operate under extreme temperatures (-40°C-85°C) with high reliability of around 500000 hours. The K19 can also be used with an external DC power supply*, allowing you to pair it with a high-performance linear power supply, letting you experience a different sound. *External DC power supply supports 15V-3A\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Power Supply\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/10_a39db169-7248-44bf-ad23-470c7bcaf1e2.png?v=1712860149\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDual internal and external heat dissipation, high energy coolly output\u003c\/h3\u003e\n\u003cp\u003eThe K19's internal heat dissipation system consists of thermally conductive material being in contact with the chips inside, which transfers the heat from the chips to the thermally conductive material and finally to the aluminum alloy outer frame. In addition, the thermally conductive aluminum alloy body features a honeycomb mesh design, which allows for convection heat dissipation. The internal and external heat dissipation systems of the K19 allow the machine to consistently output high power without the user worrying about heat issues.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp Heat Dissipation\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/11_97c456b2-b536-404f-87c3-13f4763af41b.png?v=1712860171\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSix operating modes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB decoding:\u003c\/strong\u003e the XMOS 16-core XU316 enables decoding up to 768kHz\/32bit, DSD512, MQA full decoding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical input:\u003c\/strong\u003e capable of receiving optical input, for use as an optical decoder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth input:\u003c\/strong\u003e the Qualcomm QCC5125 enables support for aptX HD\/aptX Adaptive\/LDAC codecs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoaxial input:\u003c\/strong\u003e capable of receiving coaxial input, for use as a coaxial decoder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHDMI input:\u003c\/strong\u003e supports audio input from devices such as video game consoles\/Blu-ray players\/ set-top boxes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHDMI ARC:\u003c\/strong\u003e supports audio return from TVs and other devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFour analog output + two digital output\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePO+PRE OUT (default position):\u003c\/strong\u003e front headphone out+rear audio out (volume adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePO:\u003c\/strong\u003e audio output only from the front headphone jack (volume adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePRE OUT:\u003c\/strong\u003e audio output only from the rear connectors (volume adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLO:\u003c\/strong\u003e audio output only from the rear connectors (fixed level output)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCOAXIAL:\u003c\/strong\u003e standard RCA connectors, digital output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOPTICAL:\u003c\/strong\u003e standard toslink connectors, digital output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eIN THE BOX\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eQuick Start Guide\u003c\/li\u003e\n\u003cli\u003eWarranty Card\u003c\/li\u003e\n\u003cli\u003eAC Power Cord\u003c\/li\u003e\n\u003cli\u003eType-C to USB-A Adapter\u003c\/li\u003e\n\u003cli\u003e6.35mm Adapter\u003c\/li\u003e\n\u003cli\u003eStand (Color matching with main unit)\u003c\/li\u003e\n\u003cli\u003eVertical Headphone Stand Support (Color matching with main unit)\u003c\/li\u003e\n\u003cli\u003eScrewdriver\u003c\/li\u003e\n\u003cli\u003eMetal XLR4 Dust Cover (Pre-installed)\u003c\/li\u003e\n\u003cli\u003eFeet Stands\u003c\/li\u003e\n\u003cli\u003eScrews\u003c\/li\u003e\n\u003cli\u003eUSB2.0 Data Cable\u003c\/li\u003e\n\u003cli\u003eDual Type-C Data Cable\u003c\/li\u003e\n\u003cli\u003e3.5mm Audio Cable\u003c\/li\u003e\n\u003cli\u003eInfared Remote Control \u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K19 Desktop DAC\/Amp In The Box\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/12_19fdede6-d3d3-4d5e-935e-8a97b1212531.png?v=1712860221\"\u003e\u003c\/p\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\u003ctable border=\"1\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eGeneral specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eName\/Model No.\u003c\/td\u003e\n\u003ctd\u003eK19\u003c\/td\u003e\n\u003ctd\u003eHardware solution\u003c\/td\u003e\n\u003ctd\u003eDAC: ES9039SPRO*2; USB: XMOS XU316; Bluetooth decoding: QCC5125;\u003cbr\u003eAMP: 8-way THX788+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking mode\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eUSB DAC mode\/Coaxial decoding mode\/Optical decoding mode\/HDMI decoding mode\/HDMI ARC decoding mode\/Bluetooth receiving mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\/Silver\u003c\/td\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eAbout 1800g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eAbout 250x225x36.7mm\u003c\/td\u003e\n\u003ctd\u003eVolume control type\u003c\/td\u003e\n\u003ctd\u003eKnob\/Remote control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMQA\u003c\/td\u003e\n\u003ctd\u003eSupport MQA global decoding\u003c\/td\u003e\n\u003ctd\u003eDrive-free mode (Switch mode)\u003c\/td\u003e\n\u003ctd\u003eSurpported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003eUltra high gain\/Super high gain\/High gain\/Medium gain\/Low gain\u003c\/td\u003e\n\u003ctd\u003eBluetooth reception (5.1)\u003c\/td\u003e\n\u003ctd\u003eSBC\/AAC\/aptX\/aptX LL\/aptX HD\/atpX Adaptive\/LDAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e1.30-inch TFT (240*240) fully laminated screen\u003c\/td\u003e\n\u003ctd\u003eDisplay status indication\u003c\/td\u003e\n\u003ctd\u003eDisplay indication: volume, gain, output mode, working mode, transmission format, sampling rate, EQ, etc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth format indication\u003c\/td\u003e\n\u003ctd\u003eSurpported\u003c\/td\u003e\n\u003ctd\u003eSample rate indication\u003c\/td\u003e\n\u003ctd\u003eSurpported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFIIO Control\u003c\/td\u003e\n\u003ctd\u003eSurpported\u003c\/td\u003e\n\u003ctd\u003eFirmware upgrade\u003c\/td\u003e\n\u003ctd\u003eSystem firmware: upgrade through front panel USB interface\u003cbr\u003eXMOS firmware: upgrade via front or rear panel USB interface\u003cbr\u003eBluetooth Firmware: Upgrade via FIIO Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote control\u003c\/td\u003e\n\u003ctd\u003eSupports infrared remote control (only the delivered remote control is supported)\u003c\/td\u003e\n\u003ctd rowspan=\"4\"\u003eSample rate indication\u003cbr\u003e(Knob indicator light)\u003c\/td\u003e\n\u003ctd\u003eBlue：44.1\/48kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"8\"\u003eMaximum supported sampling rate\u003c\/td\u003e\n\u003ctd\u003eUSB decoding: supports up to 768kHz\/32bit; DSD512 (Native)\u003c\/td\u003e\n\u003ctd\u003eYellow：88.2\/96\/176.4\/192\/352.8\/384\/705.6\/768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoaxial input decoding: supports up to 192kHz\/24bit; DSD64\u003c\/td\u003e\n\u003ctd\u003eGreen：DSD64\/128\/256\/512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical input decoding: supports up to 96kHz\/24bit\u003c\/td\u003e\n\u003ctd\u003eMagenta：MQA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoaxial output: supports up to 192kHz\/24bit; DSD64\u003c\/td\u003e\n\u003ctd rowspan=\"6\"\u003eBluetooth format indicator\u003cbr\u003e(Knob indicator light)\u003c\/td\u003e\n\u003ctd\u003eBule：SBC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical fiber output: supports up to 192kHz\/24bit\u003c\/td\u003e\n\u003ctd\u003eCyan：AAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDMI decoding: supports up to 192kHz\/24bit\u003c\/td\u003e\n\u003ctd\u003ePurple：aptX\/aptX LL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDMI output: supports up to 192kHz\/24bit\u003c\/td\u003e\n\u003ctd\u003eYellow：aptX HD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDMI ARC decoding: supports 44.1\/48kHz\u003c\/td\u003e\n\u003ctd\u003eGreen：aptX Adaptive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003eAdaptation impedance\u003c\/td\u003e\n\u003ctd\u003ePO：8~150Ω\u003c\/td\u003e\n\u003ctd\u003eWhite：LDAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAL：8~350Ω\u003c\/td\u003e\n\u003ctd\u003e　\u003c\/td\u003e\n\u003ctd\u003e　\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003eButtons and Interfaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eButtons\u003c\/td\u003e\n\u003ctd\u003eEncoder knob (volume knob with button*1+menu knob with button*1)\u003c\/td\u003e\n\u003ctd\u003eUSB interface\u003c\/td\u003e\n\u003ctd\u003eType-C USB (data transmission interface*2+RS232 DSP adjustment interface*1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC power input interface\u003c\/td\u003e\n\u003ctd\u003eΦ6.2mm DC socket\u003c\/td\u003e\n\u003ctd\u003eToggle Switches\u003c\/td\u003e\n\u003ctd\u003eDC power supply and AC power supply selector switch*1+ground selector switch*1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital optical input interface\u003c\/td\u003e\n\u003ctd\u003efiber optic socket\u003c\/td\u003e\n\u003ctd\u003eDigital coaxial input interface\u003c\/td\u003e\n\u003ctd\u003eRCA socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital optical output interface\u003c\/td\u003e\n\u003ctd\u003efiber optic socket\u003c\/td\u003e\n\u003ctd\u003eDigital coaxial output interface\u003c\/td\u003e\n\u003ctd\u003eRCA socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced output interface\u003c\/td\u003e\n\u003ctd\u003eStandard 4.4mm socket*1+XLR4 balanced socket*1\u003c\/td\u003e\n\u003ctd\u003eHeadphone output interface\u003c\/td\u003e\n\u003ctd\u003eStandard 6.35mm socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced line output interface\u003c\/td\u003e\n\u003ctd\u003eXLR3 balanced socket\u003c\/td\u003e\n\u003ctd\u003eSingle-ended line output interface\u003c\/td\u003e\n\u003ctd\u003eRCA socket*2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDMI interface\u003c\/td\u003e\n\u003ctd\u003eHDMI IN interface*1; HDMI OUT(ARC) interface*1\u003c\/td\u003e\n\u003ctd\u003eTRIGGER interface\u003c\/td\u003e\n\u003ctd\u003eStandard 3.5mm headphone jack (TRIGGER IN interface*1+TRIGGER OUT interface*1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003ePower parameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003eSupport AC 100-240V~50\/60Hz; DC 15V\/≥3A (choose one of the two)\u003c\/td\u003e\n\u003ctd\u003eBattery capacity\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eAudio parameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eSome performance parameters of headphone output (6.35mm output, USB DAC\/Coaxial decoding\/Optical decoding, Ultra high gain mode)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 1\u003c\/td\u003e\n\u003ctd\u003eL+R≥4000mW+4000mW（16Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eOutput impedance\u003c\/td\u003e\n\u003ctd\u003e＜0.6Ω（32Ω）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 2\u003c\/td\u003e\n\u003ctd\u003eL+R≥2300mW+2300mW（32Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥75dB (1kHz@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 3\u003c\/td\u003e\n\u003ctd\u003eL+R≥270mW+270mW（300Ω ，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e＜0.0003%(1kHz\/-6dB@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3.5μV (A-weighted)\u003c\/td\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥127dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz~20kHz: Attenuation \u0026lt;0.2dB\u003cbr\u003e20Hz~80kHz: Attenuation＜3dB\u003c\/td\u003e\n\u003ctd\u003ePeak output voltage\u003c\/td\u003e\n\u003ctd\u003e＞22.5Vp-p\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eSome performance parameters of headphone output (6.35mm output, USB DAC\/Coaxial decoding\/Optical decoding, Super high gain mode)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 1\u003c\/td\u003e\n\u003ctd\u003eL+R≥2400mW+2400mW（16Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eOutput impedance\u003c\/td\u003e\n\u003ctd\u003e＜0.6Ω（32Ω）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 2\u003c\/td\u003e\n\u003ctd\u003eL+R≥1250mW+1250mW（32Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥75dB (1kHz@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 3\u003c\/td\u003e\n\u003ctd\u003eL+R≥135mW+135mW（300Ω ，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e＜0.0003%(1kHz\/-4dB@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3.5μV (A-weighted)\u003c\/td\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥127dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz~20kHz: Attenuation \u0026lt;0.2dB\u003cbr\u003e20Hz~80kHz: Attenuation＜3dB\u003c\/td\u003e\n\u003ctd\u003ePeak output voltage\u003c\/td\u003e\n\u003ctd\u003e＞17.5Vp-p\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eSome performance parameters of single-ended line output (RCA output, USB DAC\/Coaxial decoding\/Optical decoding)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e＜0.00032%(1kHz\/-0.8dB@10kΩ)\u003c\/td\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥122dB (A计权)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥110dB (1kHz@10kΩ)\u003c\/td\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e＜1.6μV（A计权）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz~20kHz: Attenuation \u0026lt;0.1dB\u003cbr\u003e20Hz~80kHz: Attenuation＜3dB\u003c\/td\u003e\n\u003ctd\u003eLine output level\u003c\/td\u003e\n\u003ctd\u003e2.5Vrms  (1kHz@10kΩ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eSome performance parameters of balanced headphone output (4.4mm\/XLR4 output, USB DAC\/Coaxial decoding\/Optical decoding, Ultra high gain mode)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 1\u003c\/td\u003e\n\u003ctd\u003eL+R≥4000mW+4000mW（16Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eOutput impedance\u003c\/td\u003e\n\u003ctd\u003e＜0.6Ω（32Ω）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 2\u003c\/td\u003e\n\u003ctd\u003eL+R≥8000mW+8000mW（32Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥120dB (1kHz@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 3\u003c\/td\u003e\n\u003ctd\u003eL+R≥1100mW+1100mW（300Ω ，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e＜0.0002%(1kHz\/-6dB@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6μV (A-weighted)\u003c\/td\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥128dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz~20kHz: Attenuation \u0026lt;0.2dB\u003cbr\u003e20Hz~80kHz: Attenuation＜3dB\u003c\/td\u003e\n\u003ctd\u003ePeak output voltage\u003c\/td\u003e\n\u003ctd\u003e＞45Vp-p\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eSome performance parameters of balanced headphone output (4.4mm\/XLR4 output, USB DAC\/Coaxial decoding\/Optical decoding, Super high gain mode)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 1\u003c\/td\u003e\n\u003ctd\u003eL+R≥4000mW+4000mW（16Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eOutput impedance\u003c\/td\u003e\n\u003ctd\u003e＜0.6Ω（32Ω）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 2\u003c\/td\u003e\n\u003ctd\u003eL+R≥5000mW+5000mW（32Ω，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥120dB (1kHz@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power 3\u003c\/td\u003e\n\u003ctd\u003eL+R≥550mW+550mW（300Ω ，THD+N＜1%)\u003c\/td\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e＜0.0003%(1kHz\/-9dB@32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6μV (A-weighted)\u003c\/td\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥126dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz~20kHz: Attenuation \u0026lt;0.2dB\u003cbr\u003e20Hz~80kHz: Attenuation＜3dB\u003c\/td\u003e\n\u003ctd\u003ePeak output voltage\u003c\/td\u003e\n\u003ctd\u003e＞35.8Vp-p\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eBalanced line output performance parameters (XLR3, USB DAC\/Coaxial decoding\/Optical decoding)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e＜0.00025%(1kHz\/0dB@10kΩ)\u003c\/td\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥128dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥120dB (1kHz@10kΩ)\u003c\/td\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2.0μV (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz~20kHz: Attenuation \u0026lt;0.1dB\u003cbr\u003e20Hz~80kHz: Attenuation＜3dB\u003c\/td\u003e\n\u003ctd\u003eLine output level\u003c\/td\u003e\n\u003ctd\u003e4.8Vrms  (1kHz@10kΩ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"FiiO","offers":[{"title":"Black","offer_id":48277681406185,"sku":"K19 Black (OB)","price":1286.99,"currency_code":"USD","in_stock":false},{"title":"White","offer_id":48277681438953,"sku":"K19 White (OB)","price":1286.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/FiiO_K19_Black_Front.png?v=1762466813","url":"https:\/\/audio46.mom\/products\/fiio-k19-desktop-dac-amp-open-box","provider":"Audio46 Headphone Store","version":"1.0","type":"link"}