Short summary
- Proprietary 5 + 24-bit R2R DAC
- Selectable NOS and OS playback modes
- 4000mW fully discrete Class AB amplifier
- Fully balanced analogue audio architecture
- Dual-band Wi-Fi and Gigabit Ethernet
- 31-band parametric EQ with Auto EQ
- Low-noise linear power supply
- DAC, streamer and headphone amplifier in one
Specifications
| Weight | Approx. 2.9 kg |
| Dimensions (HxWxD) | 245 × 223 × 69 mm |
| Enclosure type | Desktop |
| Enclosure material | Aluminium alloy |
| Amplifier type | Desktop DAC / Headphone Amplifier / Streamer |
| Recommended headphone impedance | 16–600 Ω |
| Tubes | No |
| Pre-amp output | Yes |
| Frequency Response | 20 Hz – 80 kHz (±3 dB) |
| DAC Chip | Proprietary R2R PRO DAC |
| Output power | Up to 4000 mW + 4000 mW @ 32 Ω (Balanced) |
| Output Impedance | <1 Ω (Headphone) |
| Gain | Low / Medium / High / Ultra High |
| Input voltage | AC 100–240 V |
| THD | <0.0052% |
| THD+N | <0.0052% (1 kHz / -8 dB @ 32 Ω) |
| S/N | ≥125 dB (A-weighted) |
| Supported Formats | PCM 768 kHz/32-bit, DSD256 |
| Battery | No |
| Sample rate | Up to 768 kHz / 32-bit |
| SNR | ≥125 dB |
| Operating system | Android-based |
| Amp | Fully balanced headphone amplifier |
| Input impedance | 10 kΩ |
| Power output | Up to 4 W + 4 W @ 32 Ω (Balanced) |
| External memory | USB storage |
| Display | 3.93-inch LCD |
| Control Methods | Front panel, Remote control, FiiO Control App |
| Inputs | USB-B, USB-A, Optical, Coaxial, Bluetooth, Ethernet |
| Outputs | 6.35 mm, 4.4 mm Balanced, 4-pin XLR, RCA, XLR, Optical, Coaxial |
| Analog inputs | RCA |
| Digital inputs | USB-B, Optical, Coaxial |
| Analog outputs | RCA, XLR |
| Digital outputs | Optical, Coaxial |
| Connections | Ethernet (RJ45), USB |
| USB-B Audio Input | Yes |
| Optical/Coaxial Audio Input | Yes |
| Optical/Coaxial Audio Output | Yes |
| Analog Audio Output | RCA, XLR |
| XLR Output Audio Characteristics | 5 Vrms |
| RCA Output Audio Characteristics | 2.5 Vrms |
| Streaming services | TIDAL, Qobuz, Spotify Connect, Internet Radio |
| Streaming features | Network streaming, DLNA, AirPlay |
| Library Capacity | USB Storage |
| Multi-Room Streaming | AirPlay |
| DSP Capability | Yes |
| Control Systems | FiiO Control App, Remote Control |
| Internet Radio Support | Yes |
| Apple AirPlay Support | Yes |
| Network Protocol | DLNA, AirPlay |
| Control Methods | App, Remote, Front Panel |
| Music Playback and DAC Decoding | PCM 768 kHz/32-bit, Native DSD256 |
| Wired and wifi | Wired Ethernet |
| Bluetooth | Bluetooth 5.1 |
| Audio Codecs Supported | SBC, aptX, aptX HD, aptX Adaptive, aptX LL, LDAC |
| Wi-Fi | Dual-band Wi-Fi (2.4 GHz / 5 GHz) |
| Bluetooth | Bluetooth 5.1 |
| Ethernet | RJ45 |
| Ethernet | Gigabit Ethernet (10/100/1000 Mbps) |
| Media Connection Options | USB, Ethernet, Wi-Fi, Bluetooth |
| What's in the box | K17 R2R, Power cable, Remote control, USB cable, User manual |
Description
The Heart of Your Desktop Hi-Fi System
DAC, streamer and headphone amplifier in one premium component
The FiiO K17 R2R combines a proprietary R2R DAC, powerful headphone amplifier, network streamer and preamplifier into a single elegant desktop unit. Designed for discerning listeners, it delivers exceptional flexibility, premium connectivity and a rich, natural sound that brings your music collection to life.
Proprietary R2R Performance
Analogue character with modern digital precision
At the heart of the K17 R2R is FiiO’s proprietary 5 + 24-bit resistor ladder DAC, engineered to reproduce music with outstanding detail, smoothness and tonal realism. Switchable NOS and OS playback modes allow you to choose between a more traditional analogue presentation or enhanced digital precision to suit your listening preferences.
Power for Every Headphone
High-current Class AB amplification
A fully discrete Class AB amplifier delivers up to 4000mW per channel, providing the power and control required for everything from highly sensitive in-ear monitors to demanding planar magnetic headphones. The fully balanced analogue architecture helps minimise noise while preserving dynamics, clarity and channel separation.
Built for Modern Streaming
Seamless connectivity for today’s music libraries
Whether streaming over dual-band Wi-Fi, Gigabit Ethernet or playing local digital files, the K17 R2R integrates effortlessly into modern Hi-Fi systems. Comprehensive network support makes it easy to enjoy high-resolution music from your preferred sources with stable, reliable performance.
Sound Tailored to You
Advanced audio customisation
A built-in 31-band parametric equaliser with Auto EQ allows precise sound adjustment for headphones, speakers and personal listening preferences. Settings can be configured using the FiiO Control app or a web browser, with custom profiles stored directly on the device.
Premium Design, Refined Performance
Crafted for desktop and home Hi-Fi systems
A low-noise linear power supply, integrated USB ground loop isolation and premium aluminium chassis with real wood side panels reflect FiiO’s attention to both performance and design. A large 3.93-inch touchscreen and supplied aluminium remote provide intuitive everyday operation, making the K17 R2R an elegant centrepiece for any desktop or home audio setup.
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