FiiO K3 Compact Headphone Amplifier and USB Type-C DAC (Black)

BH #FIK3 • MFR #K3
FiiO K3 Compact Headphone Amplifier and USB Type-C DAC (Black)
Key Features
  • For Computers, iOS Devices, and More
  • 3.5mm and 2.5mm Headphone Outputs + Line
  • Dual USB Audio Modes
  • Separate DAC and Amp Functions
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Styled in a black finish, the FiiO K3 is a compact desktop headphone amplifier and USB Type-C DAC designed for use with any compatible USB device. It supports USB Audio Class 1.0 (up to 96 kHz / 24-bit) and 2.0 (up to 384 kHz / 32-bit and DSD256). Designed to provide a hi-fi audio experience, the K3 accurately presents your audio as it was intended by its creators. Certified Hi-Res by the Japan Audio Society, the K3 is equipped with an XMOS USB receiver chip, allowing the device to decode files up to 384 kHz / 32-bit PCM, as well as native DSD256 files. Digital processing is handled by the high-performance AKM AK4452 chip, which boasts 32-bit Velvet Sound technology and fully differential outputs for true balanced output, while two OPA926 opamps and a TI OPA1612 low-pass filter (LPF) provide low-distortion, low-noise, and high-output swing with up to 320mW at 16 Ohms from the balanced output.
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$109.99
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FiiO K3 Overview

Styled in a black finish, the FiiO K3 is a compact desktop headphone amplifier and USB Type-C DAC designed for use with any compatible USB device. It supports USB Audio Class 1.0 (up to 96 kHz / 24-bit) and 2.0 (up to 384 kHz / 32-bit and DSD256). Designed to provide a hi-fi audio experience, the K3 accurately presents your audio as it was intended by its creators. Certified Hi-Res by the Japan Audio Society, the K3 is equipped with an XMOS USB receiver chip, allowing the device to decode files up to 384 kHz / 32-bit PCM, as well as native DSD256 files. Digital processing is handled by the high-performance AKM AK4452 chip, which boasts 32-bit Velvet Sound technology and fully differential outputs for true balanced output, while two OPA926 opamps and a TI OPA1612 low-pass filter (LPF) provide low-distortion, low-noise, and high-output swing with up to 320mW at 16 Ohms from the balanced output.

For analog outputs, a 3.5mm single-ended connector is provided for use with your regular headphones, while a 2.5mm connector is designed for balanced headphones. Additionally, the K3 includes a 3.5mm line output for connecting to monitors or home theater setups. Should your speaker system, amplifier, or external decoder require a digital connection, the K3 is also equipped with RCA coaxial and optical connectors. Other notable features include a bass boost switch, a high/low gain level switch, and an ADC volume control, which provides smooth level adjustments. The FiiO K3 includes a set of extra foot pads and a USB cable.

  • Compact desktop enclosure
  • Two USB audio modes (USB Audio Class 1 and Audio Class 2)
  • PCM 384 kHz / DSD256 decoding
  • Dual headphone outputs (3.5mm unbalanced and 2.5mm balanced) + 3.5mm line output
  • Dual digital outputs with RCA coaxial and optical connectors
  • ADC volume
  • Bass boost
  • High/low gain switch
  • Dual crystal oscillators
  • CNC / anodized / sandblasted aluminum
  • Balance boost output power
  • XMOS USB receiver chip
  • AKM AK4452 processor with 32-bit Velvet Sound technology
  • Low noise op-amps (OPA926 and TI OPA1612)
  • Over-voltage power protection and double-filter circuits for power stability
  • Includes USB cable and extra foot pads

FiiO K3 Specs

Form FactorPortable
Number of Headphone ChannelsSingle Channel
Recommended Headphone Impedance16 to 150 Ohms
Headphone Output Power1/8" / 3.5 mm Unbalanced:
220 mW into 16 Ohms
2.5 mm Balanced:
320 mW into 16 Ohms
Headphone Output Current81.6 mA (Max)
Digital ChipsetDAC:
AKM AK4452
USB:
XMOS XUF208
Analog CircuitryLow-Pass Filter Op-Amp:
2 x OPA926
EQ Bass Boost
Connectivity
Analog Audio I/O1/8" / 3.5 mm TRS Line Output
1/8" / 3.5 mm TRS Unbalanced Headphone Output
2.5 mm TRRS Balanced Headphone Output
Digital Audio I/O1 x RCA Coaxial S/PDIF Output
1 x TOSLINK Optical S/PDIF Output
USBUSB Type-C (USB 2.0)
Performance
Frequency Response20 Hz to 80 kHz
Max Output Level7.39 V p-p
ImpedanceOutputs:
< 1.04 Ohms
THD+N≤ 0.004%
SNR≥ 113 dB
Crosstalk≥ 70 dB (1 kHz)
Digital Audio
Sample RatesInternal:
384 kHz
Coaxial S/PDIF:
192 kHz
Optical S/PDIF Outputs:
Up to 96 kHz
Bit Depths32-Bit
Compatibility
Supported Drivers/API & Plug-InsASIO
KS
DS
WASAPI
Power
DC Input Power5 VDC at 500mA (USB Bus Power)
Physical
Dimensions2.8 x 2.3 x 0.9" / 7 x 5.8 x 2.2 cm
Weight2.9 oz / 82.0 g
Packaging Info
Package Weight0.4 lb
Box Dimensions (LxWxH)5.9 x 3.6 x 0.37"
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Hi will it work for Massdrop Sennheiser 6xx?

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