SKU: 79822358704

FiiO K11 R2R High-Performance Desktop DAC / Headphone AMP

Sale price$152.99 Regular price$169.99
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

FiiO K11 R2R High-Performance Desktop DAC / Headphone AMPFeatures: >High Performance Desktop R2R DAC AMP. >Fully Differential 24 Bit R2R Resistor Array. >NOS OS Dual Mode Free Switching. >Professionally Designed Electronic Volume Control Chipset(NJW1195A). >Supports 32 Bit 384kHz PCM and Native DSD256 Audio Signal Processing. >Professional Audio Amp Circuit. >1300mW+1300mW Strong Output. >Three Levels Adjustable Gain. >Specially Designed Low Noise Power Supply. >6. 35mm+4. 4mm Dual Headphone Output Options.

Features:-

>High-Performance Desktop R2R DAC/AMP.

>Fully Differential 24-Bit R2R Resistor Array.

>NOS/OS Dual-Mode Free Switching.

>Professionally Designed Electronic Volume Control Chipset(NJW1195A).

>Supports 32-Bit/384kHz PCM and Native DSD256 Audio Signal Processing.

>Professional Audio Amp Circuit.

>1300mW+1300mW Strong Output.

>Three-Levels Adjustable Gain.

>Specially Designed Low-Noise Power Supply.

>6.35mm+4.4mm Dual Headphone Output Options.

>High-Quality Emerald Solid-State Capacitors.

>Customized LCD Display Screen.

>Global RGB Logo Light.

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, available now!!

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.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79822358704

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Verified Purchase
louctiel
Charlottesville, US
★★★★★ 4
A Frother that Won't Turn Off? Great Service. Lost Package. Great Hot Chocolate. Worth It!
Color: Black, Size: Z1 Motor + Batteries
I saw this item (or one similar) on an Alton Brown short video. He recommended a frother and I thought "what the heck? If AB recommends a uni-tasker, it must be something good." The item came in, loaded with batteries and all. I removed the plastic tab that interrupts the power and the unit kicked on. I wasn't pressing anything. It just started and would not stop. To return the item is not worth the time or money, especially since none of the "free return" options are anywhere close to me. Called the company and told them what had happened. I spoke with a very nice woman and after I described what happened, her response was not faux sympathy, but "that shouldn't have happened. We'll make it right." She offered not only to replace the unit, but send a second one free of charge. When I declined the second one, she said "take it for your troubles. Give it to a friend if you want." The order was sent out. Tracking via USPS was sent. The package was supposed to be delivered on a Friday, which was great as we were supposed to get cold temps and snow. I was anticipating making frothy hot chocolate. Suddenly the tracking showed the package being delivered. It was not. You cannot ask the USPS to find a package for 7 days and my local post office doesn't answer the phone. Disappointed, I started to make dinner and looked out the window and I could see my postal carrier's truck a block away. I waddled over to the truck and talked to her. She said "I know where it is." She had delivered it 3 blocks away. Same house number, but different street. She went and found the package, brought it to me and Bob's your uncle. That night I made hot chocolate and used the frother. I was surprised that the long shaft did not vibrate or waiver. It stays true. The speed is fast, but not overly so. The thing made a difference. It seemed to make the hot chocolate "lighter" and smoother. I threw a piece of chocolate in the mug, waited a little and then frothed again using the frother. No issues with the frother. I now had frothy, really chocolate-ly hot chocolate. For kicks and on the advice of a friend, I added a tablespoon of peppermint schnapps and used the frother again. Best hot chocolate from a mix I ever had. The frother worked better than advertised. Woo Hoo!! Because the first one didn't work, I have to knock a star off of the rating for the product. But the customer service and actual accountability of the women with whom I spoke is refreshing in the world of product support and customer service. The item is really good and would recommend whole heartedly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
M
Verified Purchase
Matthew Vincent
Louisville, US
★★★★★ 5
High Quality and Surprisingly Powerful
Color: Absolute Black, Size: Z1 Motor + Batteries
The Pros: Unexpected Power: I usually know exactly what to expect with the products I order, but this unit really blew me away. It is surprisingly powerful and handles everything much better than I anticipated. Premium Batteries Included: It was a great surprise to find that it came with Duracell batteries. Seeing a name-brand battery included really speaks to the overall quality of the product and shows they aren't cutting corners. Solid Build: From the moment I set it up, the unit felt sturdy and well-constructed. It is rare to be this genuinely pleased with a purchase right out of the box. The Cons: Operating Noise: Because the motor is so powerful, it does produce a bit more noise than some weaker units. It isn't a dealbreaker, but it is noticeable during extended use. Bottom Line: This is a high-quality product that exceeded my expectations in both performance and presentation. The fact that it comes ready to go with reliable batteries is a huge plus. I am very pleased with this purchase.
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Reviewed in the United States on May 12, 2026
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Verified Purchase
Heather
Pawtucket, US
★★★★★ 5
Great little frother!
Color: Absolute Black, Size: Z1 Motor + Batteries
Works great! I use it for my coffee & creamer, and also my electrolyte mix. Great price which includes Duracell batteries and a hand little stand.
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Reviewed in the United States on May 30, 2026
E
Verified Purchase
E J
Belleville, US
★★★★★ 5
Decent customer service
Color: Absolute Black, Size: Z1 Motor + Batteries
My frother worked well for a time and through several battery changes. Then the blending stick/wand fell off and completely detached from the handheld part/motor. I contacted customer service and they originally tried to get me to upgrade via a sales tactic and pay the difference for a 'premium model'. I said no thank you and did not ask for anything else. They contacted me back and offered to send me two of the ones I had so that I would have a back up - but without the batteries or stand. I did appreciate their prompt responses, just less gimmicks would have been nice.
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Reviewed in the United States on April 9, 2026
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
awesome company
Color: Black, Size: Z1 Motor + Batteries
I ordered one of the frothers and it stopped working in about 1 month. The company was so pleasant to work with and immediately sent me a new one to replace the one I had. They offered me an option of a rechargeable one with a little more cost or the battery powered free. I chose the battery powered and received it quickly. They are an awesome company with great prices and stand behind their products. Nice to see this in a company. Will be buying more items from them in the future!!
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Reviewed in the United States on May 4, 2026

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