---
product_id: 661777089
title: "FIIO K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black)"
brand: "fiio"
price: "€ 325.13"
currency: EUR
in_stock: true
reviews_count: 5
category: "Fii O"
url: https://www.desertcart.sk/products/661777089-fiio-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier
store_origin: SK
region: Slovakia
---

# Dual NOS/OS Sound Modes 1300mW Dual Headphone Outputs 24-bit Fully-Differential R2R DAC FIIO K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black)

**Brand:** fiio
**Price:** € 325.13
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your desktop audio game — where precision meets power in one sleek package!

## Quick Answers

- **What is this?** FIIO K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black) by fiio
- **How much does it cost?** € 325.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/661777089-fiio-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier)

## 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

- • **Dual Headphone Outputs:** Seamlessly connect both balanced 4.4mm and single-ended 6.35mm headphones for ultimate flexibility and premium sound delivery.
- • **Low-Noise Power Supply:** Enjoy pristine audio with a multi-channel, low-noise power design featuring 17 LDO regulators and external 12V supply for zero interference.
- • **Powerful Amplification:** Drive demanding headphones with 1300mW per channel output and three-level gain control for perfect volume and power balance.
- • **Precision 24-Bit R2R DAC:** Experience ultra-clean, high-fidelity sound with 192 ultra-thin film resistors ensuring 0.1% accuracy and minimal distortion.
- • **Versatile Dual Sound Modes:** Switch effortlessly between NOS mode for warm, organic tones and OS mode for crystal-clear, detailed audio clarity.

## Overview

The FiiO K11 Compact Desktop DAC/Headphone Amplifier features a cutting-edge fully differential 24-bit R2R resistor array delivering ultra-precise sound. It offers dual NOS/OS modes for customizable audio signatures, powerful 1300mW output with three gain levels, and dual headphone outputs (6.35mm single-ended and 4.4mm balanced). Its professionally designed low-noise power supply ensures clean, distortion-free playback, making it a top-tier choice for audiophiles and professionals 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: Amazing R2R DAC - I read about R2R DACs online and felt right away that this is a revolutionary breakthrough by FIIO and their engineers in delivering a DAC this good at this price point. Anything close to this DAC will cost about $ 1,000 or more. I know what a good DAC sounds like since I own two Denon DSD DACs. Wait, the balanced headphone out is an added bonus since its drives my Hifiman Sundara closed back headphones without even breaking a sweat. Wow ! I almost fell off my chair when I listened to the first song on this R2R DAC. It was Diana Krall's Temptation using my Hifiman Sundara closed back headphone bought right here on desertcart. Muddy Waters Album sounds amazing. I kid you not. This DAC is equipped with a 4.4 mm balanced headphone out which drives the Sundara Closed back without breaking a sweat using the balanced headphone output. Obviously you need a balanced 4.4mm cable of which I bought right here at desertcart at a reasonable price. First a few initial house keeping setup chores must be performed prior to using this DAC. I feel that its mandatory to have the initial setup correctly to enjoy this Treasure. Read the instruction manual first, its easy to understand. This is how I set up mine, Gain set to high. Output, switch Output PO: Front Panel headphone out with adjustable volume, SAM or sampling used is NOS, you can also select OS for oversampling for a different sound signature. The NOS gives you a Vinyl sounding unadulterated sound signature. UAC usb working mode for my Mac mini 2024 is UAC 2.0. I honestly don’t use Windows computers but I suspect that it should work fine for Windows. With my Denon DSD DAC I have two separate Headphone AMPs, A Preamp for connecting the two separate headphone AMPS and had to add an EQ to achieve the sound signature that I preferred. Imagine, with the FIIO R2R DAC you just need the DAC only and the biggest bonus is that it has balanced and unbalanced Headphone out both of which which drives the Hifiman headphones without breaking a sweat ! This R2R DAC by FIIO is a game changer. All you need is the DAC with ZERO addons and you are good to go. Don’t be fooled by an Audiophile, you can get Hifi at an unbelievable price in a DAC which punches way above it’s price point. All of this for an insane price of $ 200 Canadian Dollars. Mind you, for very high impedance headphones you will definitely need a separate headphone AMP. Most Audio Enthusiasts don’t usually use very high impedance headphone and this R2R DAC will meet the needs of ninety nine percent of Audio Enthusiasts. Now comes the sound. I am an Audio Enthusiast and prefer not to use the term Audiophile since there is no authorized designation or qualification to address oneself as an Audiophile. I use FLAC or High Res music with Audirvana Music Player and Hifiman Sundara, and a few other really good headphones. I am not loyal to any particular band, I choose headphones which correspond to my preferred sound signature. To my ears, this R2R DAC delivers a warm sound with PERFECT lows, mids and highs with a decent soundstage and excellent instrument separation in the NOS mode. The experience can be described as relaxing. Wait, you don’t have to purchase a Tube AMP. This amp sounds tube like in the NOS mode. If you prefer a different sound signature you can always choose the OS mode and it will still knock your socks off. This DAC is highly recommended and is definitely a Giant Killer. Get yours from desertcart. I am not in any way affiliated with any product mentioned here. This is my honest review and my personal opinion.
Review: Sehr gut mit einer Einschränkung - Hallo, zunächst zur Einordnung: Ich bin recht neu in diesem Bereich. Musik hab ich bisher hauptsächlich über meine QC35 oder Earbuds gehört. Ich hab mir einen HD660S2 schenken lassen und habe mir dazu den K11 RSR bestellt und zum Vergleich den K7 BT, da dieser auf dem Papier deutlich leistungsstärker erschien. Ich nutze das Gerät im Wesentlichen indem ich mein iPhone per Kabel daran anschließe. Eigentlich dachte ich, dass der K7 mehr Leistung liefern sollte, aber während ich den K7 fast bis zum Anschlag drehen musste, bis es laut wurde, liefert der K11 schon oft ab 50% eine sehr ordentliche Lautstärke (kommt ein wenig auf den Song drauf an). Verglichen mit dem K7 wirkt die Bühne des K11 deutlich enger. Das kann man jetzt mögen oder nicht. Ich persönlich finde aber den Ton des K11 RSR deutlich klarer und präziser als den des K7. Es wirkt für mich alles kristallklar, weniger "matschig" als beim K7. Auch hört man viel weniger Rauschen. Das was man hört, scheint hingegen eher von der Musik zu kommen, als vom Verstärker. Beim K7 war das deutlich ausgeprägter. Der Anschluss an den PC hat wie ans Handy auch einwandfrei geklappt. Nach der Umstellung auf 32 bit und 384 KHz habe ich am PC aber ein Knacken wahrgenommen, das vollständig weg war, nachdem ich auf 24 bit und 192 khz umgestellt habe. Wie mir scheint muss man dafür die Treiber von FIIO installieren, was ich erst hinterher gemacht und seitdem nicht mehr getestet habe. Die Treiber lassen sich einfach über die Website finden und installieren. Sehr gefällt mir auch die Verarbeitung. Man kann blöd finden, dass alles über ein Kontrollrad mit eingebautem Knopf geregelt wird und keine weiteren Knöpfe oder Schalter vorhanden sind, aber es funktioniert. Das Display ist super, was ja beim K7 leider fehlt. Lineout zur Hifianlage funktioniert anstandslos. So, kommen wir zur einzigen Sache, die mir nicht so gut gefällt: Der Klang wirkt wärmer als beim K7, was ich erst einmal weder gut noch schlecht finde, mir gefällt er so wie er ist. Aber scheinbar geht damit einher, dass dieser Verstärker keinen starken, tiefen Bass liefert. Wenn ich meine Kopfhörer an die Hifi-Anlage oder an den K7 anschließe, dann ist bei starkem tiefen Bass richtig zu spüren wie der Kopfhörer vibriert. Beim K11 fehlt dies praktisch vollständig und ich habe es auch nicht geschafft dies mit dem EQ des iPhones zu kompensieren. Das finde ich etwas schade, andere mag es vielleicht weniger stören. Es kommt vielleicht auch etwas darauf an, was man gerne so hört. Ansonsten klingt dieses kleine Gerät wirklich großartig. Der K7 BT geht deshalb trotz Bluetooth und stärken im Bass zurück, der K11 RSR wird behalten. Wenn ich mehr Bass will, gehe ich per Lineout über die Hifi-Anlage, regle den Bass per EQ etwas hoch und schließe dort die Kopfhörer an.

## 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 | #4,676 in Electronics ( See Top 100 in Electronics ) #3 in Headphone Amps |
| Brand | FiiO |
| Brand Name | FiiO |
| Customer Reviews | 4.4 out of 5 stars 313 Reviews |
| Global Trade Identification Number | 06953175710721 |
| Manufacturer | FiiO |
| Material Type | Aluminum Alloy |
| Maximum Supply Voltage | 12 Volts |
| Maximum supply voltage | 12 Volts |
| Minimum Supply Voltage | 12 Volts |
| Minimum supply voltage | 12 Volts |
| Model | K11 |
| Mounting Type | Cable Mount |
| Mounting type | Cable Mount |
| Number of Channels | 4 |
| Number of channels | 4 |
| Part Number | K11 |
| Smart Home Compatibility | Not Smart Home Compatible |

## Product Details

- **Brand:** FiiO
- **Maximum supply voltage:** 12 Volts
- **Minimum supply voltage:** 12 Volts
- **Mounting type:** Cable Mount
- **Number of pins:** 8

## Images

![FIIO K11 Compact Desktop R2R architecture DAC and Headphone Amplifier (Black) - Image 1](https://m.media-amazon.com/images/I/41FJXDbJ--L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing R2R DAC
*by S***N on 5 February 2025*

I read about R2R DACs online and felt right away that this is a revolutionary breakthrough by FIIO and their engineers in delivering a DAC this good at this price point. Anything close to this DAC will cost about $ 1,000 or more. I know what a good DAC sounds like since I own two Denon DSD DACs. Wait, the balanced headphone out is an added bonus since its drives my Hifiman Sundara closed back headphones without even breaking a sweat. Wow ! I almost fell off my chair when I listened to the first song on this R2R DAC. It was Diana Krall's Temptation using my Hifiman Sundara closed back headphone bought right here on Amazon. Muddy Waters Album sounds amazing. I kid you not. This DAC is equipped with a 4.4 mm balanced headphone out which drives the Sundara Closed back without breaking a sweat using the balanced headphone output. Obviously you need a balanced 4.4mm cable of which I bought right here at Amazon at a reasonable price. First a few initial house keeping setup chores must be performed prior to using this DAC. I feel that its mandatory to have the initial setup correctly to enjoy this Treasure. Read the instruction manual first, its easy to understand. This is how I set up mine, Gain set to high. Output, switch Output PO: Front Panel headphone out with adjustable volume, SAM or sampling used is NOS, you can also select OS for oversampling for a different sound signature. The NOS gives you a Vinyl sounding unadulterated sound signature. UAC usb working mode for my Mac mini 2024 is UAC 2.0. I honestly don’t use Windows computers but I suspect that it should work fine for Windows. With my Denon DSD DAC I have two separate Headphone AMPs, A Preamp for connecting the two separate headphone AMPS and had to add an EQ to achieve the sound signature that I preferred. Imagine, with the FIIO R2R DAC you just need the DAC only and the biggest bonus is that it has balanced and unbalanced Headphone out both of which which drives the Hifiman headphones without breaking a sweat ! This R2R DAC by FIIO is a game changer. All you need is the DAC with ZERO addons and you are good to go. Don’t be fooled by an Audiophile, you can get Hifi at an unbelievable price in a DAC which punches way above it’s price point. All of this for an insane price of $ 200 Canadian Dollars. Mind you, for very high impedance headphones you will definitely need a separate headphone AMP. Most Audio Enthusiasts don’t usually use very high impedance headphone and this R2R DAC will meet the needs of ninety nine percent of Audio Enthusiasts. Now comes the sound. I am an Audio Enthusiast and prefer not to use the term Audiophile since there is no authorized designation or qualification to address oneself as an Audiophile. I use FLAC or High Res music with Audirvana Music Player and Hifiman Sundara, and a few other really good headphones. I am not loyal to any particular band, I choose headphones which correspond to my preferred sound signature. To my ears, this R2R DAC delivers a warm sound with PERFECT lows, mids and highs with a decent soundstage and excellent instrument separation in the NOS mode. The experience can be described as relaxing. Wait, you don’t have to purchase a Tube AMP. This amp sounds tube like in the NOS mode. If you prefer a different sound signature you can always choose the OS mode and it will still knock your socks off. This DAC is highly recommended and is definitely a Giant Killer. Get yours from Amazon. I am not in any way affiliated with any product mentioned here. This is my honest review and my personal opinion.

### ⭐⭐⭐⭐⭐ Sehr gut mit einer Einschränkung
*by T***Y on 6 February 2025*

Hallo, zunächst zur Einordnung: Ich bin recht neu in diesem Bereich. Musik hab ich bisher hauptsächlich über meine QC35 oder Earbuds gehört. Ich hab mir einen HD660S2 schenken lassen und habe mir dazu den K11 RSR bestellt und zum Vergleich den K7 BT, da dieser auf dem Papier deutlich leistungsstärker erschien. Ich nutze das Gerät im Wesentlichen indem ich mein iPhone per Kabel daran anschließe. Eigentlich dachte ich, dass der K7 mehr Leistung liefern sollte, aber während ich den K7 fast bis zum Anschlag drehen musste, bis es laut wurde, liefert der K11 schon oft ab 50% eine sehr ordentliche Lautstärke (kommt ein wenig auf den Song drauf an). Verglichen mit dem K7 wirkt die Bühne des K11 deutlich enger. Das kann man jetzt mögen oder nicht. Ich persönlich finde aber den Ton des K11 RSR deutlich klarer und präziser als den des K7. Es wirkt für mich alles kristallklar, weniger "matschig" als beim K7. Auch hört man viel weniger Rauschen. Das was man hört, scheint hingegen eher von der Musik zu kommen, als vom Verstärker. Beim K7 war das deutlich ausgeprägter. Der Anschluss an den PC hat wie ans Handy auch einwandfrei geklappt. Nach der Umstellung auf 32 bit und 384 KHz habe ich am PC aber ein Knacken wahrgenommen, das vollständig weg war, nachdem ich auf 24 bit und 192 khz umgestellt habe. Wie mir scheint muss man dafür die Treiber von FIIO installieren, was ich erst hinterher gemacht und seitdem nicht mehr getestet habe. Die Treiber lassen sich einfach über die Website finden und installieren. Sehr gefällt mir auch die Verarbeitung. Man kann blöd finden, dass alles über ein Kontrollrad mit eingebautem Knopf geregelt wird und keine weiteren Knöpfe oder Schalter vorhanden sind, aber es funktioniert. Das Display ist super, was ja beim K7 leider fehlt. Lineout zur Hifianlage funktioniert anstandslos. So, kommen wir zur einzigen Sache, die mir nicht so gut gefällt: Der Klang wirkt wärmer als beim K7, was ich erst einmal weder gut noch schlecht finde, mir gefällt er so wie er ist. Aber scheinbar geht damit einher, dass dieser Verstärker keinen starken, tiefen Bass liefert. Wenn ich meine Kopfhörer an die Hifi-Anlage oder an den K7 anschließe, dann ist bei starkem tiefen Bass richtig zu spüren wie der Kopfhörer vibriert. Beim K11 fehlt dies praktisch vollständig und ich habe es auch nicht geschafft dies mit dem EQ des iPhones zu kompensieren. Das finde ich etwas schade, andere mag es vielleicht weniger stören. Es kommt vielleicht auch etwas darauf an, was man gerne so hört. Ansonsten klingt dieses kleine Gerät wirklich großartig. Der K7 BT geht deshalb trotz Bluetooth und stärken im Bass zurück, der K11 RSR wird behalten. Wenn ich mehr Bass will, gehe ich per Lineout über die Hifi-Anlage, regle den Bass per EQ etwas hoch und schließe dort die Kopfhörer an.

### ⭐⭐⭐⭐⭐ Soundstage and accuracy
*by A***R on 2 November 2024*

I use this on my computer for a near-field scenario. It replaced a Topping L30 and E30. The amp is unchanged. I knew I wanted an R2R ladder dac, but most of the options were > AUD 1000. I made the right choice, and now I have sound-stage and placement in abundance and an accuracy to the sound that reveals yet more of the music I have in my collection.

## 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.sk/products/661777089-fiio-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier](https://www.desertcart.sk/products/661777089-fiio-k11-compact-desktop-r2r-architecture-dac-and-headphone-amplifier)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-06-21*