FiiO K11 R2R – True R2R Desktop DAC & Headphone Amplifier

The FiiO K11 R2R brings rich, analog warmth to your desktop with a fully differential resistor-ladder DAC and powerful headphone output.

Key Features

• True 24-bit R2R DAC: Delivers detailed, musical sound with natural tonality and wide soundstage
• NOS/OS Modes: Switch between non-oversampling and oversampling for customized sonic preference
• Powerful Balanced Output: Up to 1.3 W @ 32 Ω for high-impedance headphones and planars
• Full Connectivity: USB-C, coaxial, optical inputs; 6.35 mm single-ended and 4.4 mm balanced outputs
• Customizable Display & RGB Logo: Visual feedback on sample rate, gain, and playback mode
• Three Gain Levels: Optimized performance from sensitive IEMs to power-hungry over-ears

Customer Benefits

Whether you're a music enthusiast or studio user, the FiiO K11 R2R gives you organic, refined sound from a compact and stylish device. Its high output power and tuning flexibility make it suitable for a wide range of headphones and listening preferences.

Quick Specs

• Dimensions: 147 × 133 × 32.3 mm
• Weight: ~420 g
• DAC: Fully differential 24-bit R2R ladder DAC
• Outputs: 1,300 mW (balanced), 660 mW (single-ended) @ 32 Ω
• Sample Rates: USB: up to 384 kHz / DSD256; Optical: 96 kHz; Coaxial: 192 kHz
• Inputs: USB-C, optical, coaxial
• Outputs: RCA line-out, 6.35 mm, 4.4 mm balanced

In the Box

• FiiO K11 R2R
• 12 V power adapter
• USB-C to USB-A cable
• 6.35 mm adapter
• User manual & warranty card

Use Cases / Ideal For

Ideal for desktop listening, high-resolution music playback, headphone enthusiasts, and users who want R2R warmth in a compact, easy-to-use format.

Compatibility

Plug-and-play with Windows, macOS, Linux, and gaming consoles like PS5 and Switch via USB. Works with headphones ranging from 8 to 350 Ω.

Pros & Cons

✅ Pros:

• True R2R sound at an affordable price point
• Great power output for both IEMs and full-size headphones
• Smooth operation with detailed visual feedback

⚠️ Cons:

• No Bluetooth or built-in EQ functionality
• Display text can be small for some setups
• External power supply required (not USB-powered)

FiiO K11 R2R redefines what a desktop DAC/amp can offer at this price. With genuine R2R architecture, powerful outputs, and clean aesthetics, it's the perfect hub for audiophiles who crave musicality and flexibility.