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FiiO K11 R2R DAC and Headphone Amplifier 6.35mm and Balanced 4.4mm

Name: FiiO K11 R2R DAC and Headphone Amplifier 6.35mm and Balanced 4.4mm
Brand: Fiio
SKU: 1005007369579700-Silver US
Price: 159.99 USD
Availability: InStock

$159.99 USD

~~$169.99 USD~~ $159.99 USD

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Color Silver US Silver EU Black US Black with EU adapter

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Specification

Colors: Black, Silver, Red (planned for later production)
Main Control Chip: GD32F303RET6
DAC: Fully differential true 24-bit R2R resistor arrays
Volume Control Chip: NJW1195A
USB Input Decoding: 384kHz/32bit, DSD256
Coaxial Input Decoding: 192kHz/24bit
Optical Input Decoding: 96kHz/24bit
USB Connector: Type-C
Display: Custom LCD screen
Dimensions: 147x133x32.3mm (including feet)
Weight: About 420g
Power Supply: DC12V 2A external adapter
SE Power Output 1: L+R ≥460mW+460mW (32Ω, THD+N <1%)
SE Power Output 2: L+R ≥50mW+50mW (300Ω, THD+N <1%)
BAL Power Output 1: L+R ≥1300mW+1300mW (32Ω, THD+N <1%)
BAL Power Output 2: L+R ≥220mW+220mW (300Ω, THD+N <1%)
Frequency Response: 20Hz~50kHz: attenuation <1.3dB
SNR: ≥115dB (A-weighted)
Noise Floor: PO <7.2uV (A-weighted); BAL <14.1uV (A-weighted)
Output Impedance: PO <10Ω (32Ω load); BAL <1.5Ω (32Ω load)
THD+N: LO <0.02% (1kHz/10kΩ)

FiiO K11 R2R DAC and Headphone Amplifier

Description

The FiiO K11 R2R is a high-performance desktop DAC and headphone amplifier designed for home audio or PC use. Featuring a fully differential true 24-bit R2R DAC resistor array, NOS/OS dual modes, and high output power, the K11 R2R offers an exceptional audio experience with support for PCM 384kHz/24bit and DSD256 decoding.

Features

Fully Differential True 24-bit R2R DAC Resistor Arrays: The K11 R2R uses FiiO's self-developed four-channel fully differential 24-bit R2R DAC, consisting of 192 precision thin-film resistors with 0.1% tolerance and low temperature drift (30ppm), providing a unique and charming sound.
Dual NOS/OS Modes: NOS (Non-Oversampling) mode preserves the original sampling rate for an authentic sound, while OS (Oversampling) mode upscales to 384kHz for superior audio performance.
High-Quality Electronic Volume Control: The NJW1195A is a 4-channel electronic volume controller that offers low distortion, low noise, and precise volume adjustment.
3 Gain Levels + 3 Independent Volume Curves: These features allow the K11 R2R to provide an optimal listening experience with various types of headphones, whether sensitive earphones or harder-to-drive over-ear headphones.
Specially-Designed Audio Circuit: The audio signal is processed through a digital audio bridge and FPGA before being decoded by the R2R DAC. It then passes through op-amps for low-pass filtering, precise volume control, and phase inversion, resulting in high-quality output signals.
Specially-Designed Power Supply: The K11 R2R uses 17 low-noise LDO precision regulator ICs and 2 DC-DC converters for a multi-channel specialized power supply, ensuring purity and stability in power output.
High-Quality Beryl Solid Capacitors: These capacitors offer ultra-low ESR and excellent anti-interference capabilities, providing a stable and clean power supply for high-quality sound.
Powerful Output: With an output power of 1300mW+1300mW under balanced mode, the K11 R2R can easily drive a wide range of HiFi earphones and headphones.
Custom LCD Screen: A high-contrast and durable LCD screen allows you to easily see the sampling rate, volume, gain, or output mode with just a glance.
Multi-Function Volume Knob: The knob controls power, menu operations, volume adjustment, and mode switching, offering easy control over various functions.
Adjustable RGB Logo Lighting: The FiiO logo is illuminated with RGB lighting that can indicate the current sampling rate and can be customized for brightness, color, and light patterns.

Basic Specifications

Colors: Black, Silver, Red (planned for later production)
Main Control Chip: GD32F303RET6
DAC: Fully differential true 24-bit R2R resistor arrays
Volume Control Chip: NJW1195A
USB Input Decoding: 384kHz/32bit, DSD256
Coaxial Input Decoding: 192kHz/24bit
Optical Input Decoding: 96kHz/24bit
USB Connector: Type-C
Display: Custom LCD screen
Dimensions: 147x133x32.3mm (including feet)
Weight: About 420g
Power Supply: DC12V 2A external adapter
SE Power Output 1: L+R ≥460mW+460mW (32Ω, THD+N <1%)
SE Power Output 2: L+R ≥50mW+50mW (300Ω, THD+N <1%)
BAL Power Output 1: L+R ≥1300mW+1300mW (32Ω, THD+N <1%)
BAL Power Output 2: L+R ≥220mW+220mW (300Ω, THD+N <1%)
Frequency Response: 20Hz~50kHz: attenuation <1.3dB
SNR: ≥115dB (A-weighted)
Noise Floor: PO <7.2uV (A-weighted); BAL <14.1uV (A-weighted)
Output Impedance: PO <10Ω (32Ω load); BAL <1.5Ω (32Ω load)
THD+N: LO <0.02% (1kHz/10kΩ)

Parts List

① K11 R2R: 1 unit
② Power Adapter: 1 unit
③ Power Cable: 1 unit
④ USB Data Cable: 1 unit
⑤ Headphone Adapter: 1 unit
⑥ Quick Start Guide: 1 unit
⑦ Warranty Card: 1 unit

What's in the Box?

① K11 R2R: 1 unit
② Power Adapter: 1 unit
③ Power Cable: 1 unit
④ USB Data Cable: 1 unit
⑤ Headphone Adapter: 1 unit
⑥ Quick Start Guide: 1 unit
⑦ Warranty Card: 1 unit

Shipping & Returns

Free Standard full searchable Shipping
DDP(Delivered Duty Paid) Services, No payment on receiption
Free 7-Day Return Policy!

Shipping Fees

Worldwide Free Shipping on Hificat, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.

In the event that a shipment is refused delivery by the recipient, is undeliverable, or is returned to sender, Hificat will process a refund to the original payment method used.

If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.

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Which Couriers To Use?

We collaborate with these courier companies:
Standard Shipping: Yanwen Express
Express Shipping(over $500 can be free): DHL Express, FedEx and SF Express

Hificat has extensive global logistics experience to ensure quality logistics services to consumers.

HiFiCat offers consumers different shipping, depending on the country, a choice of different shipping methods.

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Estimated Delivery Time

1. France, Germany, UK, Italy, Spain, USA.

All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 6-10 days to arrive.

Tracking Example

France: https://t.17track.net/en#nums=YT2132021222003141

Germany: https://t.17track.net/en#nums=YT2133621222016083

United Kingdom: https://www.17track.net/?nums=GV779664269GB

Italy:https://t.17track.net/en#nums=YT2133021222011717

Spain:https://t.17track.net/en#nums=YT2129521222003430

United States:https://t.17track.net/en#nums=SUA211205BIUQ1000007

2.EU Country：Filand, Poland, Estonia, Norway, Switzerland, Greece, Sweden, Israel, Czech Republic, Slovenia, Slovakia, Denmark, Netherlands, Latvia, Croatia, Austria, Hungary, Belgium, Bulgaria, Romania, Ireland, Malta, Iceland, Serbia and so on.

All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 10-15 days to arrive.

Filand: https://www.17track.net/?nums=UG324191515YP

Poland: https://www.17track.net/?nums=UG335827360YP

Estonia: https://www.17track.net/?nums=UG363043181YP

Norway: https://www.17track.net/?nums=VR457380806YP

Switzerland: https://www.17track.net/?nums=UG359525911YP

Greece: https://www.17track.net/?nums=UG250851788YP

Sweden: https://www.17track.net/?nums=UG353458343YP

Israel: https://www.17track.net/?nums=UG356134837YP

Czech Republic: https://www.17track.net/?nums=UG320437102YP

Slovenia: https://www.17track.net/?nums=UG349882511YP

Slovakia: https://www.17track.net/?nums=UG349946557YP

Denmark: https://www.17track.net/?nums=UG272480001YP