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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)

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$159.99

$ 67 .99 $67.99

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About this item

  • Revitalize your television or computer with this incredible decoder, and experience a whole new level of sound. Whether you're at home or in the office, paired with speakers or headphones, you'll be able to enjoy delightful and captivating music.
  • The K11 R2R is FiiO's first entry-level desktop DAC and headphone amplifier featuring a full R2R DAC architecture. It is designed to connect to computers, smartphones, tablets, HiFi players, and other devices, improving the audio quality of the existing output through the decoding and amplification capabilities of the K11 R2R. The R2R DAC architecture is renowned for its unique and cherished sound quality, making it a favorite among music enthusiasts. The K11 R2R allows users to experience the distinctive charm of R2R products at a very affordable price.
  • Utilizing a fully differential complementary 24-bit R2R resistor ladder DAC, it offers lower noise, fewer harmonic components in the FFT, and a darker musical background compared to non-complementary architectures.
  • Equipped with both NOS (Non-OverSampling) and OS (OverSampling) modes, the K11 R2R provides versatile audio experiences. In NOS mode, it maintains the original sampling rate for decoding, preserving the pure and authentic sound quality, allowing you to enjoy a truly immersive and captivating musical experience. In OS mode, the audio is upsampled globally to a high sampling rate of 384kHz, resulting in superior audio performance with more detailed and clearer sound quality.
  • A sleek and compact desktop accessory with an aluminum alloy body. Its small size and slim design will bring a clean and tidy look to your workspace. Upgrade your desk with this visually appealing addition



Product Description

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A. Susi
2025-09-05 10:46:49
I really like this DAC amp. The balanced headphones amp sounds great. The unbalanced is not as good but still sounds nice. OS and NOS modes clearly sound different. Nos is warmer and more musical. OS is more detailed.
Robert
2025-09-04 19:50:33
The sound from this unit is nice and calming to listen to like it was tuned to a specific audience and it performs flawlessly for the money. On a higher end stereo, 15K up, it lacks definition , sound-stage, character and resolution. Need to spend 1K up to improve on it.
granger
2025-08-16 17:08:34
Unit has no glare and a decent sense of stage presence for this price level. Imaging is not very precise though. I expect you will find it to be non-fatiguing.
Shariffnla
2025-08-13 15:07:14
Playing your CDs or streaming audio including DVDs reveals a warm, wide sound stage that allows you to hear all the magic that was originally made with these recordings. Featuring both coax and digital inputs as well as USB inputs, the resistor ladder DAC has a nice timbre and has a unique analog sound.
HighCommand
2025-08-09 16:10:14
This is my third FiiO DAC but first R2R. The difference between delta-sigma DAC's is apparent right away. I really like the smooth and rich sound. For this price it is a great way to experience the differences. It compares well with DAC's of much higher cost. I like the menu system for setting parameters, it is very easy to understand and use. The sound is why to buy this device.
hi
2025-08-08 12:31:25
Forget every review or stack combos, just get this combo IF you like a 'analog' sound. It's the best way I can describe it. It's not surgical or analytical like other DACs. It doesn't flavor the sound to be warm either. It rounds off the edges of everything but without losing detail and adds in soundstage somehow.If you got bright headphones (hifiman) these will tame the trebles more. You have a 6xx/650? These will give it more soundstage. All creating a "slower" analog sound while maintaining detail or giving you more detail if you're coming for a dongle. I wouldn't call it a tube amp sound either though.Ok I sound like a YouTube thumbnail, clickbait by now. But it definitely is a noticeable sound difference the minute I plugged it in and listened to it. As well as just the packaging and presentation, it's a great value for money IF this is the sound you like.
Joe Shmoe
2025-07-27 14:11:37
I received an open box unit. Even worse, it had been re-shrink-wrapped like the box wasn’t missing pieces of it.
Miguel Rosado
2025-07-12 10:20:06
The only thing that I do miss is a remote control. Otherwise this is a great piece of hardware I am using it as a system Dac and it has a very nice personality.
Cobalto Iridium
2025-07-10 13:24:50
Excelente unidad K11 R2R, su sonido es muy organico, muy retro, en particular el modo de operacion NOS (musica instrumental, solistas, etc.), cuando desees un soniddo mas moderno el modo OS (EBM, metal, electronica) es el adecuado. Lo he usado solo y en conjunto del amplificador Topping A50III, con audifonos Philips SH9500. Su sonido te engancha, es facil escucharlo por mucho tiempo y preferirlo aun cuando no es el DAC mas exacto y hay DACs tecnicamente superiores en su categoria de precio. Este DAC es especialmente bueno para señales tipo PCM y aunque reproduce muy bien todas las frecuencias destaca en el enfasis que hace de los medios por lo que resalta las voces, la musica relajada, musica instrumental, musica con contrastes dinamicos y silencios. Este DAC por su natureleza perdona menos las malas grabaciones, no las adorna y se escucharan verdaderamente deficientes pero en contraste te enganchara la musica bien grabada.Algunos compradores reportan problemas con la entrada optica. En mi caso el volumen era muy bajo en esa entrada. Despues de actualizar el firmware a la version M69 ya no tuve problemas.
Sean
2025-07-05 10:09:49
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.
MODIG MAGNUS
2025-06-23 12:32:16
Works great, excellent value for the buck. Highly recomended
Tommy
2025-06-09 15:10:56
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.
PB..
2025-05-27 17:18:50
Excellent petit dac R-2R qui peut se comparer aux dernières puces AKM "velvet" et Sabre "pro" des dacs de 3 ou 4 fois son prix. La partie ampli est juste correcte en asymétrique et plus acceptable en symétrique, je n'ai constaté aucun cliquetis ou autre bruit en USB et l'entrée coaxiale ainsi que la sortie ligne sont excellentes, je ne constate pas de dégradation en utilisant le réglage de volume du dac pour mon ampli extérieur. Je suis impatient que Fiio rajoute une entrée I2s et des sorties symétriques XLR. A conseiller sans réserve si vous voulez essayer le R2R sans vous ruiner, pour une écoute plus naturelle et décontractée, débarrassée des fausses notes de la conversion delta/sigma et du sur-échantillonnage.
A. Susi
2025-04-29 14:28:03
I really like this DAC amp. The balanced headphones amp sounds great. The unbalanced is not as good but still sounds nice. OS and NOS modes clearly sound different. Nos is warmer and more musical. OS is more detailed.
Robert
2025-04-25 16:19:55
The sound from this unit is nice and calming to listen to like it was tuned to a specific audience and it performs flawlessly for the money. On a higher end stereo, 15K up, it lacks definition , sound-stage, character and resolution. Need to spend 1K up to improve on it.
granger
2025-04-15 14:34:23
Unit has no glare and a decent sense of stage presence for this price level. Imaging is not very precise though. I expect you will find it to be non-fatiguing.
Shariffnla
2025-03-26 13:25:36
Playing your CDs or streaming audio including DVDs reveals a warm, wide sound stage that allows you to hear all the magic that was originally made with these recordings. Featuring both coax and digital inputs as well as USB inputs, the resistor ladder DAC has a nice timbre and has a unique analog sound.
HighCommand
2025-03-22 16:17:55
This is my third FiiO DAC but first R2R. The difference between delta-sigma DAC's is apparent right away. I really like the smooth and rich sound. For this price it is a great way to experience the differences. It compares well with DAC's of much higher cost. I like the menu system for setting parameters, it is very easy to understand and use. The sound is why to buy this device.
hi
2025-03-17 17:43:29
Forget every review or stack combos, just get this combo IF you like a 'analog' sound. It's the best way I can describe it. It's not surgical or analytical like other DACs. It doesn't flavor the sound to be warm either. It rounds off the edges of everything but without losing detail and adds in soundstage somehow.If you got bright headphones (hifiman) these will tame the trebles more. You have a 6xx/650? These will give it more soundstage. All creating a "slower" analog sound while maintaining detail or giving you more detail if you're coming for a dongle. I wouldn't call it a tube amp sound either though.Ok I sound like a YouTube thumbnail, clickbait by now. But it definitely is a noticeable sound difference the minute I plugged it in and listened to it. As well as just the packaging and presentation, it's a great value for money IF this is the sound you like.
Joe Shmoe
2025-03-13 16:10:07
I received an open box unit. Even worse, it had been re-shrink-wrapped like the box wasn’t missing pieces of it.
Miguel Rosado
2025-02-10 16:05:35
The only thing that I do miss is a remote control. Otherwise this is a great piece of hardware I am using it as a system Dac and it has a very nice personality.
Cobalto Iridium
2025-02-04 17:45:24
Excelente unidad K11 R2R, su sonido es muy organico, muy retro, en particular el modo de operacion NOS (musica instrumental, solistas, etc.), cuando desees un soniddo mas moderno el modo OS (EBM, metal, electronica) es el adecuado. Lo he usado solo y en conjunto del amplificador Topping A50III, con audifonos Philips SH9500. Su sonido te engancha, es facil escucharlo por mucho tiempo y preferirlo aun cuando no es el DAC mas exacto y hay DACs tecnicamente superiores en su categoria de precio. Este DAC es especialmente bueno para señales tipo PCM y aunque reproduce muy bien todas las frecuencias destaca en el enfasis que hace de los medios por lo que resalta las voces, la musica relajada, musica instrumental, musica con contrastes dinamicos y silencios. Este DAC por su natureleza perdona menos las malas grabaciones, no las adorna y se escucharan verdaderamente deficientes pero en contraste te enganchara la musica bien grabada.Algunos compradores reportan problemas con la entrada optica. En mi caso el volumen era muy bajo en esa entrada. Despues de actualizar el firmware a la version M69 ya no tuve problemas.
Sean
2025-01-08 14:24:21
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.
MODIG MAGNUS
2024-12-17 18:45:58
Works great, excellent value for the buck. Highly recomended
Tommy
2024-12-06 16:58:21
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.
PB..
2024-11-12 11:02:15
Excellent petit dac R-2R qui peut se comparer aux dernières puces AKM "velvet" et Sabre "pro" des dacs de 3 ou 4 fois son prix. La partie ampli est juste correcte en asymétrique et plus acceptable en symétrique, je n'ai constaté aucun cliquetis ou autre bruit en USB et l'entrée coaxiale ainsi que la sortie ligne sont excellentes, je ne constate pas de dégradation en utilisant le réglage de volume du dac pour mon ampli extérieur. Je suis impatient que Fiio rajoute une entrée I2s et des sorties symétriques XLR. A conseiller sans réserve si vous voulez essayer le R2R sans vous ruiner, pour une écoute plus naturelle et décontractée, débarrassée des fausses notes de la conversion delta/sigma et du sur-échantillonnage.
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