{"product_id":"fiio-k17-r2r-desktop-dac-headphone-amplifier","title":"FiiO K17 R2R Desktop DAC Headphone Amplifier","description":"\u003cp\u003e\u003cem\u003eExpected Launch date: July 2026 \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eEstimated Retail Price: 950 USD\u003c\/em\u003e\u003c\/p\u003e\n\u003ch1\u003e\u003cstrong\u003eFiiO K17 R2R desktop DAC and headphone amplifier\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe FiiO K17 R2R is a desktop DAC and headphone amplifier built around FiiO’s proprietary 24+5-bit segmented R2R PRO resistor array. A fully balanced audio architecture, discrete Class AB headphone amplification, network streaming support, and a 3.93-inch touchscreen combine with real wood side panels to create a component designed for both critical headphone listening and integrated desktop audio systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProprietary R2R PRO conversion\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe in-house developed 24+5-bit segmented R2R PRO architecture combines a thermometer-decoded upper stage with a precision resistor network. This approach reduces cumulative decoding errors while preserving the natural tonal character associated with R2R designs. The result is a presentation that is smooth, detailed, and rich in texture while maintaining strong resolution and dynamic range.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eReal wood and aluminum construction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe K17 R2R pairs a precision-machined aluminum chassis with imported ash or black walnut side panels depending on finish. Natural wood grain gives each unit a unique appearance while the multi-knob control layout and ventilated chassis contribute to practical daily operation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eNetwork streaming and local playback\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSupport for Roon Ready, AirPlay, Qplay, NAS playback, SMB, and NFS allows access to both streaming platforms and locally stored music libraries. The FiiO Control app provides direct access to network storage for convenient management of high-resolution music collections.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eEight operating modes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe K17 R2R functions as a streaming receiver, local media player, USB DAC, Bluetooth DAC, optical DAC, coaxial DAC, single-ended analog preamplifier, and balanced analog preamplifier. This flexibility allows it to integrate into a wide range of headphone and speaker systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProfessional PEQ processing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA dedicated DSP platform enables 31-band lossless parametric equalization with support for gain, Q-factor, limiter, compressor, DRC, and DRE adjustments. PCM signals from 44.1kHz to 96kHz can be processed without sample rate conversion, preserving signal integrity while providing extensive tuning control.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAUTO EQ integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAUTO EQ automatically applies headphone compensation profiles to simplify frequency-response correction. Users can further customize presets or create their own tuning profiles and share, import, or export EQ settings.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDiscrete Class AB amplification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe discrete amplifier stage combines operational amplifiers with triode-style current amplification using ON Semiconductor MJE243G and MJE253G transistor pairs. Balanced output reaches 4000mW + 4000mW at 32 ohms, providing substantial power for demanding headphones.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFully balanced signal path\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFrom digital conversion through I\/V conversion, low-pass filtering, and amplification, the entire signal path uses a fully differential architecture. This design reduces crosstalk and supports wide dynamic range performance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eIsolated internal architecture\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDedicated sub-boards separate the power supply, digital circuitry, and analog circuitry. Physical isolation helps reduce interference and preserves signal accuracy throughout the audio chain.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAdvanced power supply design\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA custom 35W low-noise linear power supply works alongside five 4700μF capacitors to provide stable current reserves. Separate analog and digital power rails and additional ultra-low-noise regulation stages further improve isolation and consistency.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePrecision clocking system\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTwo Accusilicon femtosecond crystal oscillators and a dedicated FiiO low-phase-noise oscillator help reduce timing errors across multiple sampling rates, supporting accurate digital audio reproduction.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePremium internal components\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNichicon, ELNA, Panasonic, Neutrik, sapphire solid-state capacitors, and silver-plated oxygen-free copper interconnects are used throughout the design to support long-term reliability and signal integrity.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDual-core system control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAn X2000 processor works alongside an ESP32-S3 controller to manage playback, networking, user interface functions, and system operations while maintaining responsive performance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTouchscreen and remote operation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA 3.93-inch touchscreen provides direct access to settings, playback controls, and EQ functions. Five dedicated control knobs and the included aluminum infrared remote offer additional ways to manage the device.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWired and wireless connectivity\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eGigabit Ethernet and dual-band Wi-Fi support stable network audio playback, while Bluetooth 5.1 with LDAC, aptX Adaptive, aptX HD, AAC, and SBC expands wireless listening options.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eComprehensive protection systems\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIntegrated safeguards monitor amplifier temperature, transformer temperature, overload conditions, DC output, and power input current to help protect connected equipment.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProprietary 24+5-bit segmented R2R PRO resistor array\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFully balanced DAC and amplifier architecture\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDiscrete Class AB triode current-driven headphone amplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e4000mW + 4000mW balanced headphone output at 32Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e31-band lossless PEQ with AUTO EQ support\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRoon Ready, AirPlay, Qplay, NAS, SMB, and NFS support\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e3.93-inch touchscreen display\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e35W low-noise linear power supply\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBluetooth 5.1 with LDAC and aptX Adaptive\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAluminum remote control included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDAC Architecture: FiiO proprietary R2R PRO\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMain Controller: X2000\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUSB Controller: XMOS XU316\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBluetooth Chip: Qualcomm QCC5125\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay: 3.93-inch touchscreen LCD\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 9.65 x 8.78 x 2.72 in (245 x 223 x 69 mm)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: 6.39 lb (2900 g)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUSB DAC Resolution: Up to 768kHz\/32-bit, DSD256 Native\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLocal Playback: Up to 384kHz\/32-bit, DSD256\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStreaming Playback: Up to 384kHz\/32-bit, DSD256 DoP\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCoaxial Input: Up to 192kHz\/24-bit, DSD64\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptical Input: Up to 96kHz\/24-bit\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCoaxial Output: Up to 192kHz\/24-bit, DSD64\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptical Output: Up to 192kHz\/24-bit\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBalanced Output Power: 4000mW + 4000mW at 32Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle-Ended Output Power: 1850mW + 1850mW at 32Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBalanced Output Power at 300Ω: 950mW + 950mW\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle-Ended Output Power at 300Ω: 240mW + 240mW\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRCA Output: 2.5Vrms + 2.5Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eXLR Output: 5Vrms + 5Vrms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 20Hz–90kHz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: ≥125dB (A-weighted)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNoise Floor: \u0026lt;2.6μV (A-weighted)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTHD+N: \u0026lt;0.005%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eK17 R2R Main Unit x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAC Power Cord x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUSB Cable x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeadphone Adapter x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRemote Control x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFuse x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eXLR4 Decorative Plug x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBatteries x2 (regional availability varies)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty Card x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuick Start Guide x1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FiiO","offers":[{"title":"Black","offer_id":47778712387820,"sku":null,"price":950.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/K17Rblackcopy.png?v=1782228097","url":"https:\/\/apos.audio\/products\/fiio-k17-r2r-desktop-dac-headphone-amplifier","provider":"Apos","version":"1.0","type":"link"}