---
product_id: 647293021
title: "K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black)"
brand: "fiio"
price: "112.56 OMR"
currency: OMR
in_stock: true
reviews_count: 13
category: "Fii O"
url: https://www.desertcart.com.om/products/647293021-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier-black
store_origin: OM
region: Oman
---

# Dual headphone outputs Dual NOS/OS modes 1300mW output power K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black)

**Brand:** fiio
**Price:** 112.56 OMR
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your desktop audio game with FiiO K11 R2R — where precision meets power.

## Quick Answers

- **What is this?** K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black) by fiio
- **How much does it cost?** 112.56 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/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

- • **Low-Noise Power Supply:** Enjoy pristine sound with a multi-channel, low-noise power design that eliminates distortion and background hiss.
- • **Powerful Amplification:** Drive demanding headphones with 1300mW per channel and three gain levels tailored to your gear.
- • **Precision R2R DAC Array:** Experience ultra-accurate 24-bit sound with 192 high-precision resistors for crystal-clear audio clarity.
- • **Flexible Listening Options:** Choose between balanced 4.4mm or single-ended 6.35mm outputs to match any headphone setup.
- • **Versatile Dual Operating Modes:** Switch effortlessly between NOS for warm, musical vibes and OS for detailed, high-res clarity.

## Overview

The FiiO K11 Compact Desktop DAC and Headphone Amplifier features a fully differential 24-bit R2R resistor array delivering smooth, rich sound. It offers dual NOS/OS modes for customizable audio character, a powerful 1300mW per channel amp with three gain settings, and dual headphone outputs (6.35mm single-ended and 4.4mm balanced). Its low-noise power supply ensures clean, distortion-free playback, making it a top-tier 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.

Review: Sit back and relax - I’m pretty sold on this. I’ve tried a few different DACs over the years and had a topping e30 before this one. Which itself is a very nice sounding dac, quite clinical but detailed with a good thump to the bass. I’m still not wholly convinced dacs sound hugely different to each other, that being said, you can quite easily hear a bad one. And this fiio isn’t that. I’ve got it paired with a musical fidelity a1 and Lintons so my whole system is pretty rolled off and “warm”; the fiio fits right in. I’ve been playing music for hours, and doing a lot more streaming than I’ve ever done before, I’ve not put a record on in a few days now. It’s smooth and has enough detail, but really, it’s just musical. I think a great sign of a decent system is when you just find yourself and others, tapping your feet, and I do this a lot when using the k11. I was curious to see if there were a difference between chip and resistor based dacs and I think there is. I don’t think it’s “night and day”, but I don’t see anyone saying they wouldn’t find this dac to be enjoyable. Not tried with headphones yet as have been using exclusively in line out with my 2 channel setup. But I’ll give it a go at some point. Right now, I’m just enjoying putting music on and sitting there with a glass of wine. Build quality is good, I like the knurled dial, feels solid. Only complaint I have is that I had issues pairing with the wiim pro as the fiio doesn’t seem to like playing at 192/24 with a coaxial cable. I tried few different ones and some were better than others, but all gave me brief dropouts. Playing at any other bitrate or using a toslink was trouble free, so that’s what I’m using. I don’t think it’s a fault of the k11 specifically, but perhaps something to do with r2r dacs in general.
Review: I'm glad I took the chance - This is my first R2R dac, after a line of single chip entry dacs through to multi chip ones, I won't use the "night and day" line because it's overused and I just don't like it, what this is though, is a revelation in sound quality from the, many times the price one it has replaced, I only bought it to see what all the fuss was about, after a few weeks listening I now know, will it suit everyone? No will it suit most people? I think its a resounding yes, it's slightly warmer sounding, but that's not to say any music is muffled because it's very clear to listen to, again this is my preference with my equipment and speakers, but it will sound better than most at probably up to £500 in my opinion

## 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 | 5 in Headphone Amplifiers |
| Guaranteed software updates until | unknown |
| Item model number | K11 |
| Manufacturer | FiiO |
| Package Dimensions | 24.5 x 19.7 x 6.2 cm; 970 g |

## 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sit back and relax
*by R***R on 27 March 2025*

I’m pretty sold on this. I’ve tried a few different DACs over the years and had a topping e30 before this one. Which itself is a very nice sounding dac, quite clinical but detailed with a good thump to the bass. I’m still not wholly convinced dacs sound hugely different to each other, that being said, you can quite easily hear a bad one. And this fiio isn’t that. I’ve got it paired with a musical fidelity a1 and Lintons so my whole system is pretty rolled off and “warm”; the fiio fits right in. I’ve been playing music for hours, and doing a lot more streaming than I’ve ever done before, I’ve not put a record on in a few days now. It’s smooth and has enough detail, but really, it’s just musical. I think a great sign of a decent system is when you just find yourself and others, tapping your feet, and I do this a lot when using the k11. I was curious to see if there were a difference between chip and resistor based dacs and I think there is. I don’t think it’s “night and day”, but I don’t see anyone saying they wouldn’t find this dac to be enjoyable. Not tried with headphones yet as have been using exclusively in line out with my 2 channel setup. But I’ll give it a go at some point. Right now, I’m just enjoying putting music on and sitting there with a glass of wine. Build quality is good, I like the knurled dial, feels solid. Only complaint I have is that I had issues pairing with the wiim pro as the fiio doesn’t seem to like playing at 192/24 with a coaxial cable. I tried few different ones and some were better than others, but all gave me brief dropouts. Playing at any other bitrate or using a toslink was trouble free, so that’s what I’m using. I don’t think it’s a fault of the k11 specifically, but perhaps something to do with r2r dacs in general.

### ⭐⭐⭐⭐⭐ I'm glad I took the chance
*by S***C on 10 November 2025*

This is my first R2R dac, after a line of single chip entry dacs through to multi chip ones, I won't use the "night and day" line because it's overused and I just don't like it, what this is though, is a revelation in sound quality from the, many times the price one it has replaced, I only bought it to see what all the fuss was about, after a few weeks listening I now know, will it suit everyone? No will it suit most people? I think its a resounding yes, it's slightly warmer sounding, but that's not to say any music is muffled because it's very clear to listen to, again this is my preference with my equipment and speakers, but it will sound better than most at probably up to £500 in my opinion

### ⭐⭐⭐⭐ It’s an entry level R2R DAC, but great value.
*by G***R on 19 February 2025*

Ordered this to feed some Adam D3V studio monitors from a Microsoft Surface Book and the R2R DAC of the Fiio K11 Pro brings a significant improvement in sound. Using RCA outputs to speakers analogue input using suitable cable (not supplied), the sound is wonderful. Clear, precise and more revealing. Great sound from the 4.4mm balanced headphone port on the front to some Fiio FH7 ear phones. Using some Sennheiser HD580 Precision headphones (which are harder to drive), the volume does not go so high but the gain can be increased using the small screen and knob on the front of the device. It comes with a usb-c cable, a 3.5mm to 4.4mm adapter and a US power cable. Users in the UK will need to use an international power adapter or acquire a suitable 12v power supply. I happened to have both of these available but would imagine it would be frustrating if you got this and didn’t! I’m giving it four stars rather than five, but only because of the power supply cable problem. Otherwise, I am loving it.

## 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)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-04*