--- product_id: 647293021 title: "K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black)" brand: "fiio" price: "€ 322.01" currency: EUR in_stock: true category: "Fii O" url: https://www.desertcart.it/products/647293021-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier-black store_origin: IT region: Italy --- # Dual headphone outputs (6.35mm & 4.4mm balanced) Dual NOS/OS modes 1300mW output power K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black) **Brand:** fiio **Price:** € 322.01 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your desktop audio game with the FiiO K11 R2R — where precision meets power in every note. ## Quick Answers - **What is this?** K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black) by fiio - **How much does it cost?** € 322.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/647293021-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier-black) ## Best For - fiio enthusiasts ## Why This Product - Trusted fiio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerhouse Amplifier:** Drive any headphones effortlessly with 1300mW per channel and three gain levels for perfect pairing every time. - • **Dual Headphone Outputs:** Seamlessly connect both balanced and single-ended headphones without compromise—flexibility meets high-res sound. - • **Low-Noise Power Supply:** Enjoy pristine audio with a multi-channel, low-noise power design that keeps distortion and interference at bay. - • **Precision R2R DAC Array:** Experience ultra-clean, distortion-free sound with 192 high-accuracy resistors delivering crystal-clear audio fidelity. - • **Switchable NOS/OS Modes:** Tailor your listening vibe—choose warm, musical NOS mode or detailed, crisp OS mode for ultimate sonic versatility. ## Overview The FiiO K11 Compact Desktop R2R DAC and Headphone Amplifier features a fully differential 24-bit R2R resistor array with 192 ultra-precise resistors, delivering clean and rich sound. It offers dual NOS/OS operating modes for customizable audio character, a powerful 1300mW per channel amplifier with three gain settings, and dual headphone outputs (6.35mm single-ended and 4.4mm balanced). Its professionally designed low-noise power supply ensures minimal distortion, making it a premium yet affordable choice for audiophiles seeking high-resolution desktop audio. ## Description FiiO has released a new R2R variant for its highly acclaimed K11 desktop DAC/AMP. With a self-developed fully differential 24-Bit R2R Resistor Array, the K11 R2R brings a smooth and rich sound to its listeners. The K11 R2R has NOS/OS dual operating modes, each having its own sound characteristics. The DAC/AMP houses dual headphone output options, one 6.35mm single-ended and another 4.4mm balanced port. Equipped with a powerful amp section with three-level adjustable gain and high-quality emerald solid-state capacitors, the K11 R2R delivers a strong output of 1300mW per channel. Experience a rich, smooth, organic R2R sound with the FiiO K11 R2R. ## Features - Fully-Differential 24-Bit R2R DAC Array - FiiO has featured its newly developed four-channel fully differential 24-bit R2R resistor array on the K11 R2R. It consists of 48 resistors per channel, a total of 192 high-precision ultra-thin film resistors with 0.1% accuracy and low-temperature drift between the four channels. It promises clean and crisp output with dark background thanks to the specially developed audio circuit architecture. - NOS/OS Dual Operating Modes - FiiO K11 R2R has NOS(Non-Oversampling) and OS(Oversampling) dual operating modes. These are freely switchable and offer dual sound characteristics with the device. The NOS mode maintains the original sampling rate while signal processing while the OS mode oversamples all the signals to 384kHz for processing. NOS mode results in more musical presentation while the OS mode delivers more details and clarity. - Powerful Amp Section - FiiO has equipped the K11 R2R with professionally designed amp circuitry. It consists of Ti OPA1642 as Low-Pass filters and then dual SGM8262 Professional-grade operational amplifiers. The K11 R2R has an output power rating of up to 1300mWx2, which is adequate enough to drive demanding headphones with ease. It has three-level gain modes for easy pairing with sensitive as well as high-power requiring gear. The K11 R2R also adopts NJW1195A precise digital volume chipset for precise volume adjustment with low distortion between the channels. - Dual Headphone Output Ports - FiiO K11 R2R houses dual headphone output ports. It consists of a single-ended 6.35mm port and a balanced 4.4mm output port. You can easily pair different IEMs and headphones with the K11 R2R and enjoy high-resolution music to all its glory. - True High-Resolution Audio Signal Processing - FiiO K11 R2R supports decoding for high-resolution audio signals. It has full support for PCM and DSD signal processing supporting up to 32-bit/384kHz PCM and DSD256 audio signals. DSD256 requires the DSD output mode to be set to native. It is internally converted into PCM for R2R signal processing. - Professionally Designed Low-Noise Power Supply - FiiO K11 R2R features a professionally designed low-noise power supply. It consists of 17 Low-Noise LDO precision voltage regulator ICs and 2 DC-DCs providing a multi-channel power supply. It further benefits from the external 12V power supply ensuring a clean output with low noise and distortion issues. K11 R2R delivers quality sound for its users. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D9BB5RL1 | | Best Sellers Rank | 45 in Headphone Amplifiers | | Brand | FiiO | | Country Of Origin | China | | Customer Reviews | 4.5 4.5 out of 5 stars (556) | | Global Trade Identification Number | 06953175710721 | | Interface | 4.4mm_balanced, 6.35mm_single-ended | | Manufacturer | FiiO | | Manufacturer Part Number | K11 | | Material | Aluminum Alloy | | Maximum Supply Voltage | 12 Volts | | Minimum Supply Voltage | 12 Volts | | Model Number | K11 | | Mounting Type | Cable Mount | | Number of Channels | 4 | | Number of Pins | 8 | | Product Warranty | 1 | ## Product Details - **Brand:** FiiO - **Maximum supply voltage:** 12 Volts - **Minimum supply voltage:** 12 Volts - **Mounting type:** Cable Mount - **Number of pins:** 8 ## Images ![K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black) - Image 1](https://m.media-amazon.com/images/I/41FJXDbJ--L.jpg) ## Frequently Bought Together - FiiO K11 R2R DAC and Headphone Amplifier for Home Audio or PC, 6.35mm and Balanced 4.4mm, RCA, Coaxial, Optical, 1300mW, 384kHz/24Bit DSD256(Black) - HIFIMAN Edition XS Full-Size Over-Ear Open-Back Planar Magnetic Hi-Fi Headphones with Stealth Magnets Design, Adjustable Headband, Detachable Cable for Audiophiles, Home, Studio-Black - Youkamoo 4.4mm Cable Compatible for Hifiman HE4XX, HE-400i Headphones 8 Core Braided Silver Plated Replacement Audio Upgrade Cable (4.4mm to Dual 3.5mm Male Version) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/647293021-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier-black](https://www.desertcart.it/products/647293021-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier-black) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-14*