FiiO K11 R2R
Desktop DAC and Headphone Amplifier | featuring a 24-bit R2R resistor array | NOS/OS dual modes | 1300mW powerful output | USB, coaxial, optical inputs; 4.4mm & 6.35mm outputs.
FiiO K11 R2R: A high-fidelity desktop DAC/amp featuring a 24-bit R2R resistor array, NOS/OS dual modes, and 4.4mm balanced output. Delivers warm, natural sound with 1300mW power—perfect for audiophiles.
Dual Decoding Modes
Support for PCM 384kHz/24bit and DSD256decoding, means the K11 R2R can easily handlehigh-precision audio signals and fully exhibit thedetails within, providing you with an excellent audio experience. Switch between NOS (pure original sampling) for authenticity or OS (upsampling to 384kHz) for enhanced detail.
True R2R Architecture
A 192-resistor precision network ensures smooth, analog-like sound reproduction with ultra-low distortion.
High-Power Amplification
Delivers 1300mW@32Ω (balanced) for effortless control over demanding headphones.
Flexible Connectivity
Supports USB, coaxial, and optical inputs, with 4.4mm balanced & 6.35mm single-ended outputs.
Specifications
- DAC Chips: Self-developed 24-bit R2R resistor-ladder DAC
- Resistor Array: 192 precision thin-film resistors
- PCM: Up to 384kHz/24-bit (USB), 192kHz/24-bit (coaxial), 96kHz/24-bit (optical).
- DSD: Native DSD256 (converted to PCM internally)
- Modes: NOS (Non-Oversampling): Preserves original sampling rate. OS (Oversampling): Upsamples to 384kHz for enhanced detail
- Output Power: Balanced (4.4mm): 1300mW+1300mW @32Ω, 220mW+220mW @300Ω. Single-Ended (6.35mm): 460mW+460mW @32Ω, 50mW+50mW @300Ω
- THD+N: <0.02% (line-out), <1% (headphone-out)
- Inputs: USB-C (384kHz/DSD256), coaxial (192kHz), optical (96kHz), RCA line-out 29.
- Outputs: 4.4mm balanced, 6.35mm single-ended (includes 3.5mm adapter)
Why Choose the K11 R2R?
- Warm, Natural Tonality – R2R technology delivers rich harmonics and lifelike timbre, ideal for vocals and acoustic music.
- Flexible Sound Customization – Toggle between NOS (for a vintage feel) and OS (for crisp, high-resolution playback).
- Desktop-Grade Power – Drives high-impedance headphones like the HD 600 or Sundara with ease.
- Compact Yet Powerful – A perfect balance of performance and space-saving design.
Shipping Options
| Shipping Options | Cost | Shipping Time |
| Priority Air Mail | Budget shipping cost | 10 – 15 days |
| Express (DHL/UPS/FedEx) | Base on location | 5 - 10 days |
Please refer to shipping estimate when you confirm your order.
You may choose standard shipping or express shipping depending on the items in your order and your location. As your orders may be handed over to local carriers for the final leg of delivery, tracking may not be available every step of the way.
Shipping address
Please make sure that you have provided the correct and current address for shipping and delivery. You may use P.O. boxes as your shipping address. But certain items can only be delivered to physical addresses. Large products, valuables, perishables, products with age-based restrictions, or items shipped via private carriers may require a physical mailing address or signature confirmation to be successfully delivered. Items cannot be delivered to security-restricted areas such as military bases.
Shipping time and cost
1) After an order has been successfully paid and confirmed, you will see the estimated delivery time and cost for shipping on your order confirmation page. You will also receive an order confirmation message that will outline the estimated processing time for your order.
2) The warehouse may take 1-3 days to process your order. You will receive a message once your order has been shipped.
3) You'll receive a shipment notification message that will provide you with the estimated delivery time for each package once it is shipped. We will also provide you the tracking number when it is ready. You can view this estimated delivery time under each package in your order history at the same time.
4) In most cases, your order will be delivered within the estimated time of delivery. However, the actual delivery date may be affected by flight arrangements, weather conditions, and other external factors. Please refer to the tracking information for the most up to date delivery date.
Issues regarding delivery
If your package has not been delivered or your tracking information shows that your package has been delivered but you have not received it, please contact our customer service immediately and within 30 days of the order date.