{"product_id":"fiio-k13-r2r-desktop-dac-headphone-amplifier-copy","title":"FiiO K13 R2R Desktop DAC \u0026 Headphone Amplifier [REFURBISHED DEMO UNIT]","description":"\u003cdiv\u003e\u003cspan style=\"color: #cc0000;\"\u003e\u003cb\u003eREFURBISHED DEMO UNIT\u003cbr\u003e\u003cbr\u003eThis product has been tested and assessed by our team, and is sold in working and resellable condition.\u003c\/b\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #cc0000;\"\u003eThis product may feature minor physical blemishes, and may therefore not be in pristine physical condition. If there is any\u003cspan\u003e \u003c\/span\u003e\u003ci\u003enotable\u003c\/i\u003e\u003cspan\u003e \u003c\/span\u003eblemish present however, we will provide additional information below this disclaimer, accompanied with photos above which highlight the notable imperfections listed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #cc0000;\"\u003eWe cannot provide any further photos of the unit's current physical condition beyond those available in this listing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #cc0000;\"\u003e\u003ci\u003e*If applicable*\u003c\/i\u003e\u003cspan\u003e \u003c\/span\u003e- This product has been tested to ensure that the device functions, and the battery discharges properly. Unfortunately we cannot provide any exact charging or battery life information.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #cc0000;\"\u003eIf this product is missing any factory accessories, the missing accessories will be listed under this disclaimer.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #cc0000;\"\u003eThis product is strictly available for online purchase only, and cannot be viewed, purchased or collected in store.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #cc0000;\"\u003eThis product comes with full warranty as per the Warranty section on this listing unless otherwise specified. If there is no warranty period outlined in the Warranty section below, please\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:info@addictedtoaudio.com.au\" rel=\"noreferrer\" target=\"_blank\"\u003eget in touch with our Customer Care team\u003c\/a\u003e\u003cspan style=\"color: #cc0000;\"\u003e for more information.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA new way to hear your music\u003c\/strong\u003e\u003cbr\u003eThe K13 R2R is a fully-balanced desktop DAC and headphone amplifier that leans on FIIO’s proprietary 24-bit R2R resistor arrays, a powerful 2400mW+2400mW balanced output, and a wealth of tuning and connectivity options. With dual NOS\/OS modes, LDAC Bluetooth, and a precision 10-band PEQ, it gives you control over both the flavor and fidelity of your music. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully differential 24-bit R2R DAC\u003c\/strong\u003e\u003cbr\u003eAt the heart of the K13 R2R are four channels of resistor arrays: 48 precision-thin film resistors per channel, 192 in total. Each resistor is matched to 0.1% accuracy with ultra-low temperature drift. The result is a true 24-bit fully differential R2R DAC that delivers a sound signature that’s rich, organic, and natural. Lower FFT harmonics mean darker backgrounds and less noise, so what you hear is only the music.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDouble the fun with Dual NOS\/OS modes\u003c\/strong\u003e\u003cbr\u003eNOS (Non-Oversampling) Mode: Maintains the original sampling rate for decoding, preserving the authentic sound and allowing you to enjoy an organic and captivating musical experience. OS (Oversampling) Mode: Upsamples globally to a high sampling rate of 384kHz, for superior audio performance and even more refined, clear sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10-band high-precision PEQ\u003c\/strong\u003e\u003cbr\u003eFine-tune the sound to your taste. The built-in parametric EQ, powered by the XMOS XU316 chip and FIIO’s proprietary tuning algorithm, supports 10-band adjustment across all modes. Use the FIIO Control app or web interface to load presets like “Retro PEQ,” match headphone response curves, or share your own EQ curves. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBalanced from start to finish\u003c\/strong\u003e\u003cbr\u003eFrom DAC to LPF to volume control and headphone amp, the entire circuit is fully differential. That means minimal distortion, excellent interference rejection, and a dynamic range that stays intact across the chain. Add gain control, headphone protection, and POP noise elimination, and you get a circuit that’s as safe as it is clean.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecially-designed power supply\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDC\/AC dual supplies: The 30W internal supply is shielded for reduced interference, while an external DC input lets you experiment with higher-end linear supplies.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMulti-rail design: 18 low-noise LDOs and 5 DC-DC converters keep each section fed with clean power.\u003cbr\u003eAudiophile-grade capacitors: ELNA RA3 silk-film electrolytics and specialized tantalum caps help deliver warmth and stability.\u003cbr\u003ePower on tap\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith 2400mW+2400mW into 32Ω on the balanced outputs, the K13 R2R has the muscle to drive high-impedance headphones with ease while still being gentle enough for sensitive IEMs. It reveals detail without losing control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e3 gain levels + 3 independent volume curves\u003c\/strong\u003e\u003cbr\u003eThe 3 independent gain levels and volume curves allow the K13 R2R to give you a better listening experience with various types of headphones, whether you are using sensitive earphones or harder to drive over-ear headphones.\u003c\/p\u003e","brand":"FiiO","offers":[{"title":"Silver","offer_id":44122669580422,"sku":"6953175710844.DEMO.70305","price":399.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0875\/3864\/files\/fiio-k13-r2r-dekstop-headphone-amplifier-lifestyle-2.jpg?v=1757465199","url":"https:\/\/addictedtoaudio.com.au\/products\/fiio-k13-r2r-desktop-dac-headphone-amplifier-copy","provider":"Addicted To Audio","version":"1.0","type":"link"}