Audiophiles and music enthusiasts looking for a high-quality DAC/headphone amp will be thrilled with the black FiiO K3 V2 is a compact desktop USB-C DAC and headphone amplifier designed for use with any compatible USB device.
Updates to the K3 V2 include an upgraded ESS DAC (ES9038Q2M), which provides an increased signal-to-noise ratio of 14 dB and reduced distortion by 13 dB. The circuit design has been optimized for a low noise floor and clean sound. FiiO also improved various performance indicators and overall sound quality, allowing you to immerse yourself in your music. Other notable features include an updated USB Type-C interface for a more reliable and stable connection. The unit now employs overvoltage protection and a double-filter circuit to ensure power supply stability. Digital and analog audio circuits each have their own power supply, which greatly reduces crosstalk.
The K3 V2 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. 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 V2 accurately presents your audio as it was intended by its creators.
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 V2 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 V2 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 V2 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
- ESS ES9038Q2M with an increased SNR and lower distortion
- Low noise opamps (OPAP26 and OPA1612)
- Over-voltage power protection and double-filter circuits for power stability
- Separate power supplies for digital and analog circuits for reduced crosstalk
- Includes USB cable and extra foot pads
FiiO K3 V2 Specs
| Form Factor | Desktop |
| Display | None |
| Channels of I/O | 2 Inputs / 2 Outputs at 384 kHz |
| Maximum Sampling Rate | 384 kHz / 32-Bit (PCM) |
| Number of Microphone Preamps | None |
| Built-In Microphone | None |
| Expansion Slots | None |
Signal Processing
| Pad | None |
Connectivity
| Analog Audio I/O | 1 x 2.5 mm TRRS Balanced Line Output 1 x 1/8" / 3.5 mm TRS Unbalanced Line Output 1 x 1/8" / 3.5 mm TRS Unbalanced Headphone Output |
| Phantom Power | None |
| Digital Audio I/O | 1 x RCA Coaxial S/PDIF Output 1 x TOSLINK Optical S/PDIF Output |
| Host Connection / USB | USB-C (Class-Compliant) USB-C |
| Host Connection Protocol | USB 2.0 USB 1.0 |
| USB (Non-Host) | None |
| Sync I/O | None |
| Network I/O | None |
| MIDI I/O | None |
| Wireless Connectivity | None |
Performance
| Frequency Response | 20 Hz to 20 kHz -3 dB |
| Maximum Output Level | 7.9 V p-p |
| Headphone Output Power | 1/8" / 3.5 mm: 220 mW into 16 Ohms (1% THD) 1/8" / 3.5 mm: 120 mW into 32 Ohms (1% THD) 1/8" / 3.5 mm: 13 mW into 300 Ohms (1% THD) 2.5 mm: 344 mW into 16 Ohms (1% THD) 2.5 mm: 220 mW into 32 Ohms (1% THD) 2.5 mm: 26 mW into 300 Ohms (1 kHz) |
| Impedance | 2.5 mm Balanced Headphone Outputs: < 2 Ohms 1/8" / 3.5 mm Headphone : < 1 Ohm |
| SNR | 2.5 mm Balanced Headphone Outputs: ‰¥ 119 dB 1/8" / 3.5 mm Headphone Outputs: > 121 dB |
| THD+N | 2.5 mm Balanced Headphone: ‰¤ 0.0014% (A-Weighted, 1 kHz) 1/8" / 3.5 mm Headphone: < 0.0012% |
| Channel Separation | 1/8" / 3.5 mm Line/Headphone Outputs: > 80 dB (1 kHz) 2.5 mm Balanced Headphone Outputs: > 113 dB |
Digital Audio
| Sample Rates | Internal: 384 kHz Coaxial S/PDIF: 192 kHz Optical S/PDIF Output: Up to 96 kHz |
| Sample Rate Conversion | None |
| Bit Depths | 32-Bit |
Audio Storage & Playback
| Memory Card Slot | None |
| OS Compatibility | Windows macOS *As of January, 2022: Check with manufacturer for the most up-to-date compatibility |
| Included Software | None |
Power
| Power Requirements | DC Input |
| AC/DC Power Adapter | 5 VDC at 500 mA (Not Included) |
Physical
| Dimensions | 2.8 x 2.3 x 0.9" / 7 x 5.8 x 2.2 cm |
| Weight | 2.9 oz / 82.0 g |
Packaging Info
| Package Weight | 0.375 lb |
| Box Dimensions (LxWxH) | 5.8 x 4.1 x 1.2" |
In the Box
- FiiO K3 V2 Desktop DAC and Headphone Amplifier (Black)
- USB Type-C Cable
- 4 x Spare Foot Pads
- 2-Year Manufacturer Warranty
Customer reviews
Recommendation for purchase
