{"product_id":"fiio-k17","title":"FiiO K17 | Desktop DAC and Amp","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/fiio-logo.webp?v=1732225693\" alt=\"FiiO logo\" style=\"display: block; margin-left: auto; margin-right: auto; width: 65%;\"\u003e\u003c\/p\u003e\n\u003ch4\u003eFeaturing Dual AKM AK4499EX DAC Chips, the K17 Offers the Perfect Combination of Modern Design and Advanced Audio Technology\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDiscrete Class AB headphone amplifier\u003c\/li\u003e\n\u003cli\u003eHigh-power 4000mW+4000mW balanced output\u003c\/li\u003e\n\u003cli\u003eFeatures flagship AKM DAC chipset\u003c\/li\u003e\n\u003cli\u003eCustom low-noise power supply with separate analog and digital circuits\u003c\/li\u003e\n\u003cli\u003eThree ultra-low phase noise femtosecond crystal oscillators\u003c\/li\u003e\n\u003cli\u003e3.93-inch Touchscreen for effortless control\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/bloomaudio.mom\/blogs\/articles\/fiio-audio-2025-buyers-guide\"\u003eCheck out our FiiO 2025 Buyer's Guide here!\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K17 DAC and amp x3 sitting on grey blocks at varying heights on black backdrop\" height=\"1360\" width=\"2048\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/fiio-k17-main-banner.webp?v=1740761600\"\u003e\u003c\/p\u003e\n\u003ch3\u003eNew Frontiers of Modern Technology\u003c\/h3\u003e\n\u003cp\u003eAs a next generation desktop headphone amplifier, the FiiO K17 is where elegance and cutting-edge technology meet. The K17 is built for audiophiles who demand clean power, low noise and versatile connectivity. The discrete Class AB circuit, dual AKM flagship DACs and 4000mW + 4000mW output make this amplifier stand at the top of its game. The K17 is not only the successor to the K9 Pro, it is also an exploration of new possibilities for high-end desktop DAC and headphone amplifiers.\u003c\/p\u003e\n\u003ch3\u003eExceptional Components\u003c\/h3\u003e\n\u003cp\u003eThe K17 features an M21586Q DSP chip, capable of double-precision 64-bit floating-point calculations and runs at a high 360MHz clock frequency. The chip is complemented by a \u003ca href=\"https:\/\/www.mouser.com\/new\/ess-technology\/ess-tech-es9821q-adc\/?srsltid=AfmBOoosdbbsk4aBD52z4bC_Lkj8vpYhWUe3lClwGbqsTend88hXm6iK\" rel=\"noopener\" target=\"_blank\"\u003eES9821Q ADC\u003c\/a\u003e and a specially customized ultra-low phase noise femtosecond crystal oscillator. These three components allow the user to utilize the 31-band high-precision lossless PEQ.\u003c\/p\u003e\n\u003ch3\u003eDiscrete Class AB Amplification\u003c\/h3\u003e\n\u003cp\u003eThe K17 is built with a fully-discrete Class AB transistor current amplification headphone amplifier. Using ON Semiconductor \u003ca rel=\"noopener\" href=\"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/mje243-d.pdf\" target=\"_blank\"\u003eMJE243\/253 transistors\u003c\/a\u003e, this design delivers high current with low output impedance. The result is 4000mW+4000mW of balanced output, enabling it to drive a wide range of headphones.\u003c\/p\u003e\n\u003ch3\u003eFully Balanced\u003c\/h3\u003e\n\u003cp\u003eFrom the DAC to the I\/V conversion, low-pass filtering, and headphone amp, the entire audio circuit features a fully differential architecture. This design enhances dynamic range and minimizes crosstalk. Key stages, including I\/V conversion and LPF, utilize multiple low-noise \u003ca href=\"https:\/\/www.ti.com\/lit\/ds\/symlink\/opa1612.pdf?ts=1740732693350\u0026amp;ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FOPA1612\" rel=\"noopener\" target=\"_blank\"\u003eOPA1612\u003c\/a\u003e precision op-amps for a powerful, detailed sound.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K17 DAC and amp fully balanced DAC circuit diagram\" height=\"1360\" width=\"2048\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/fiio-k17-circuit.webp?v=1740761925\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAKM Flagship DACs\u003c\/h3\u003e\n\u003cp\u003eThe K17 holds an AKM flagship DAC chipset—\u003ca rel=\"noopener\" href=\"https:\/\/www.akm.com\/us\/en\/products\/audio\/audio-dac\/ak4499exeq\/\" target=\"_blank\"\u003eAK4191+AK4499EX\u003c\/a\u003e (x2). Each channel is handled by an AK4499EX. The 8-channel to 4-channel LPF design reduces common mode interference, resulting in better channel separation and dynamics. The design also incorporates AKM’s \"DWA ROUTING\" technology, ensuring a clean background and detailed sound reproduction.\u003c\/p\u003e\n\u003ch3\u003eMulti-Stage Power Supply\u003c\/h3\u003e\n\u003cp\u003eThe K17’s analog circuitry is powered by a multi-stage supply, featuring dedicated control circuits for each signal path stage. Low-noise TPA7A47\/7A33 LDO regulators provide secondary voltage regulation, ensuring stable, clean power for pristine audio performance.\u003c\/p\u003e\n\u003ch3\u003eLow-Phase Noise Femtosecond Crystal Oscillators\u003c\/h3\u003e\n\u003cp\u003eThe K17 features three top-tier ACCUSILICON ultra-low phase noise femtosecond crystal oscillators—AS318-L (45.1584MHz, 49.1520MHz) and AS318-Pro (24.576MHz). These minimize phase noise, ensuring precise signal restoration across various sampling rates for purer, more consistent sound.\u003c\/p\u003e\n\u003ch3\u003eDual-Core Design\u003c\/h3\u003e\n\u003cp\u003eThe K17 is driven by a high-performance X2000 multi-core processor—with a primary XBurst@2 core, two logical CPUs, and an XBurst@ small core—for precise audio processing and stable playback with minimal energy use. It also features a low-power ESP32-S3 SoC with an Xtensa 32-bit LX7 dual-core (up to 240MHz) and an ultra-low power co-processor, ensuring a fast, responsive, and energy-efficient experience.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"FiiO K17 DAC and amp dual-core design diagram\" height=\"1360\" width=\"2048\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/fiio-k17-dual-core.webp?v=1740762603\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAdditional Features\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePhysically Separated Boards\u003c\/strong\u003e\u003cbr\u003eThe internal power supply, digital, and analog sections are each housed on separate circuit boards to prevent interference. This design preserves signal accuracy and integrity, delivering purer, cleaner audio output.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Noise Power Supply\u003c\/strong\u003e\u003cbr\u003ePowering the K17 is a custom high-quality low-noise transformer, ensuring the purity of the power supplied. Additionally, five 4700uF electrolytic capacitors provide ample power reserves to ensure a steady supply of power.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWire and Wireless\u003cbr\u003e\u003c\/strong\u003eWith Gigabit Ethernet and 2.4G\/5G Wi-Fi, the K17 offers fast, stable network connectivity, allowing you to stream lossless audio seamlessly, without dropouts or interruptions.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 3.93-inch LCD (240×1020) bezel-less screen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDAC:\u003c\/strong\u003e AK4191EX + AK4499EQ (2x)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Decoding:\u003c\/strong\u003e XU316\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth Decoding:\u003c\/strong\u003e QCC5125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier:\u003c\/strong\u003e MJE243G\/253G discrete transistor current amplification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMCU:\u003c\/strong\u003e ESP32-S3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoC:\u003c\/strong\u003e X2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 24.46 x 21.3 x 6.68 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 6lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/FiiO_K17_Specifications.pdf?v=1740760413\"\u003eFull list of specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eFiiO K17 DAC \u0026amp; headphone amplifier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eAC power cord\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eRemote control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eXLR4 plug cover\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eFuse\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eUSB data cables (x2)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eHeadphone plug adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eWarranty card\u003c\/span\u003e\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\u003cspan\u003eQuick start guide\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FiiO","offers":[{"title":"Silver","offer_id":41309638557771,"sku":"FIO-K17-SLV","price":989.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":41309638525003,"sku":"FIO-K17-BLK","price":989.99,"currency_code":"USD","in_stock":true},{"title":"Black - Open Box","offer_id":41778498830411,"sku":"FIO-K17-BLK-OB","price":889.99,"currency_code":"USD","in_stock":false},{"title":"Silver - Open Box","offer_id":41887580848203,"sku":"FIO-K17-SLV-OB","price":889.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0023\/9255\/5595\/files\/fiio-k17-slv-thumb.webp?v=1740761586","url":"https:\/\/bloomaudio.mom\/products\/fiio-k17","provider":"Bloom Audio","version":"1.0","type":"link"}