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User Manual for FiiO K3 Compact Headphone Amplifier and USB Type-C DAC Click to enlarge the picture
Contents of the user manual for the FiiO K3 Compact Headphone Amplifier and
- Product category: Headphone Amplifiers FiiO
- Brand: FiiO
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for FiiO Headphone Amplifiers
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User manual for the FiiO K3 Compact Headphone Amplifier and contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any FiiO product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official FiiO user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a FiiO product will considerably shorten its lifespan!
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Product description The FiiO K3 is a compact desktop headphone amplifier and USB Type-C DAC designed for use with any compatible USB device and 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 op-amps 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 ensures the user 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 & 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
In the Box FiiO K3 Compact Headphone Amplifier and USB Type-C DAC Type-C USB Cable 4 x Spare Foot Pads Limited 1-Year Warranty Table of Contents
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Technical parametersFiiO K3 Specs | USB | USB: Type-C USB Audio Class: UAC 1.0 + UAC 2.0 USB Chip: XMOS XUF208 USB Driver: ASIO/KS/DS/WASAPI/DSD DOP (Native) | | Frequency Range | 20 Hz to 80 kHz | | Volume | Volume Knob: ADC | | Gain | L/H | | Bass Boost | 0/+6 dB | | Line Out | 1/8" / 3.5 mm | | Headphone Output | Headphone Out 1: 1/8" / 3.5 mm Single-Ended Output Headphone Out 2: 2.5 mm TRRS Balanced Output | | Digital Outputs | Coaxial: RCA for 192 kHz, Support DSD64 DOP Optical Out: Up to 96 kHz | | DAC | Audio DAC: AKM AK4452 | | Opamp | LPF OPAMP: TI OPA1612 Driver OPAMP: 2 x OPA926 | | Output Power | 1/8" / 3.5 mm Headphone Output 220 mW (16 Ohms) 120 mW (32 Ohms) 2.5 mm Headphone Output 320 mW (16 Ohms) 200 mW (32 Ohms) | | Drive Ability | 16 to 150 Ohms | | Line Level | 1.9 Vrms | | DAC | 384 kHz/32-Bit | | DSD Format | DSD256 | | Signal-to-Noise Ratio (SNR) | ≥113 dB | | THD + N | ≤0.004% | | Output Impedance | <1.04 Ohms | | Crosstalk | ≥70 dB (1 kHz) | | Max Output Current | 81.6 mA | | Max Output Voltage | 7.39 Vp-p | | Indicator LEDs | Blue: Sample Rate ≤ 48 kHz Yellow: Sample Rate >48 kHz Green: DSD Format | | Power | USB Bus Powered: 5 VDC 500 mA | | Dimensions | 2.8 x 2.3 x 0.9" / 70.0 x 58.0 x 22.0 mm | | Weight | 2.9 oz / 82.0 g | | | | Package Weight | 0.36 lb | | Box Dimensions (LxWxH) | 5.9 x 3.6 x 1.3" |
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