


FiiO S15 is a premium, full-sized (430mm width) desktop high-res audio streamer, DAC, and preamplifier designed for home hi-fi systems. Get this amazing DAC now from the official dealer of FiiO in Bangladesh, Gears for Ears today with an official 1 year warranty.
The S15 runs on an open Android 12 operating system paired with a custom horizontal interface optimized for audio. This setup ensures seamless installation and fluid performance of all major streaming music apps. Whether you prefer Roon Ready, AirPlay, DLNA, or Bluetooth streaming, the S15 handles it all. For power users, it supports UPNP, SMB, and WebDAV protocols to access music from a NAS or cloud server, alongside direct local playback via built-in storage, TF cards, and external USB drives.
At the heart of the S15 is the acclaimed AK4191 + AK4499EX flagship DAC combination. By utilizing a cutting-edge, fully separated digital/analog architecture, the S15 significantly enhances the signal-to-noise ratio and minimizes interference. This design results in a remarkably "black" background, heightened resolution, and a tonal character that is both dynamically balanced and naturally relaxed.
For the first time in a FiiO player, the S15 incorporates two ACCUSILICON AS318-B series ultra-low phase noise femtosecond oscillators ($45.1584\text{MHz}$ and $49.1520\text{MHz}$). Every oscillator undergoes 100% selection to guarantee the reduction of phase noise. This meticulous engineering ensures reference-grade fidelity and unparalleled precision during digital-to-analog conversion or when outputting to external high-end DACs.
Designed to be the hub of your audio system, the S15 features an exhaustive array of interfaces. It includes I2S output, AES/EBU, Coaxial, Optical, and HDMI (with ARC support). For analog output, it provides both RCA and XLR balanced connections. With a standard 430mm chassis width, it integrates perfectly into full-sized desktop racks, offering a professional and aesthetically coordinated look.
The S15 features a stunning 7.84-inch automotive-grade color display running the latest FiiO OS. Navigating your library is effortless thanks to a versatile control scheme: use the tactile dual knobs and virtual buttons for local operation, the included Bluetooth remote for convenience, or the dedicated mobile app for full control from across the room.
| Name/Model | S15 | Hardware solution | Master control: Qualcomm Snapdragon 660, DAC: AK4191+AK4499EX, USB decoding: XU316, Bluetooth: QCC5125 (reception) |
| Work mode | Android mode/Pure Music mode/USB DAC mode/Bluetooth receiving mode/AirPlay mode/Coaxial Decoding mode/Roon Ready/Optical Decoding mode/HDMI IN mode, HDMI ARC mode and AES Decoding mode | ||
| Color | Black/Silver | Weight | About 5647g |
| Dimensions | About 430x274.5x89.5mm | Volume control | Volume knob |
| Display | 7.84-inch (400*1280) bezel-less display | ROM | 64GB/About 46GB available |
| RAM | 4GB | M.2 portable hard disk | Supports 2TB |
| Storage card | Single microSD card expansion, supports up to 2TB in theory | Channel balance | L20~R20 (each for 0.5dB) |
| Buttons and Ports | |||
| Knob | Encoder knob (including volume adjusting)*1+Output selection knob (including power on/off)*1 | USB | Type-C USB3.0*1+USB A*2 (data transfer) |
| Grounding terminal | M6x23mm grounding terminal | Toggle switch | Ground selection switch*1 |
| Balanced line-out port | XLR3 balanced port | Single-ended line-out port | RCA port*2 |
| Digital optical input port | Optical port | Digital coaxial input port | RCA port |
| Digital optical output port | Optical port | Digital coaxial output port | RCA port |
| AES input port | XLR3 balanced port | AES output port | XLR3 balanced port |
| TRIGGER port | Standard 3.5mm headphone port (TRIGGER OUT port*1) | HDMI port | HDMI IN port*1, HDMI OUT (ARC) port*1 |
| Ethernet port | 100M Ethernet port | I2S port | HDMI I2S output port*1 |
| Special Functions | |||
| WiFi | 2.4GHz/5GHz, supports DLNA, AirPlay, WiFi song transfer, Roon Ready, etc. | Bluetooth transmission (5.0) | AAC/SBC/aptX/aptX HD/LDAC/LHDC |
| Bluetooth reception (5.1) | SBC/AAC/aptX/aptX LL/aptX HD/aptX Adaptive/LDAC | FIIO Link | Android supports WiFi and Bluetooth control, iOS supports Bluetooth control |
| HDMI decoding | Supports audio decoding for DVD/set-top box/computer | HDMI ARC | Supports audio decoding for devices with ARC function |
| HDMI I2S | Supports audio decoding for devices with I2S input | All to DSD | Supported |
| EQ adjustment | 10-band dynamic EQ adjustment (±12dB), built-in 8 preset EQ, supports self-define EQ | MQA | Supports full decoding |
| Operating mode | Supports gesture navigation, two-button navigation and three-button navigation | Bluetooth codec indicator (knob indicator light) | Blue: SBC |
| Max. supported sampling rate | USB DAC: Up to768kHz/32bit; DSD512 (Native) | Cyan: AAC | |
| Native decoding: Up to384kHz/32bit; DSD256 (Native) | Purple: aptX/aptX LL | ||
| USB Audio: 768kHz/32bit; DSD512 (supports DoP/D2P/Native) | Yellow: aptX HD | ||
| Coaxial in decoding: Up to192kHz/24bit | White: LDAC | ||
| AES in decoding: Up to192kHz/24bit | Green: aptX Adaptive | ||
| Optical in decoding: Up to96kHz/24bit | Orange: LHDC | ||
| Coaxial out: Up to384kHz/24bit; DSD128 (D2P/DOP) | Sampling rate indicator (knob indicator light) | Blue: Lossy | |
| AES out: Up to384kHz/24bit; DSD128 (D2P/DOP) | Cyan: SQ | ||
| Optical out: Up to192kHz/24bit | Yellow: HR | ||
| HDMI in: Up to192kHz/24bit | Green: DSD | ||
| HDMI out: Up to192kHz/24bit | Magenta: MQA | ||
| Screensaver | Supported | Double tap to wake up | Supported |
| Firmware upgrade | Supports upgrade through local storage+microSD card+OTA | ||
| Power Supply Parameters | |||
| Power supply | Supports AC 110~120V/220~240V 50/60Hz; 230V and 115V input level switch | ||
| Audio Parameters | |||
| Performance and parameters of pre XLR out (XLR3 out, USB DAC/Optical/Coaxial/AES decoding) | |||
| THD+N | <0.00023% (1kHz/0dB@10KΩ) | SNR | ≥131dB (A-weighted) |
| Crosstalk | ≥126dB | Noise floor | <2.6uV (A-weighted) |
| Frequency response | 20Hz~70kHz: attenuation<2.8dB | Line output level | 8.9Vrms |
| 20Hz~20KHz: attenuation<0.3dB | |||
| Performance and parameters of pre RCA out (RCA out, USB DAC/Optical/Coaxial/AES decoding) | |||
| THD+N | <0.00026% (1kHz/-0dB@10KΩ) | SNR | ≥128dB (A-weighted) |
| Crosstalk | ≥120dB | Noise floor | <1.8uV (A-weighted) |
| Frequency response | 20Hz~70kHz: attenuation<2.8dB | Line output level | 4.5Vrms |
| 20Hz~20KHz: attenuation<0.3dB | |||
| Performance and parameters of XLR out (XLR3 out, USB DAC/Optical/Coaxial/AES decoding) | |||
| THD+N | <0.00026% (1kHz/-0dB@10KΩ) | SNR | ≥126dB (A-weighted) |
| Crosstalk | ≥120dB | Noise floor | <2.5uV (A-weighted) |
| Frequency response | 20Hz~70kHz: attenuation<2.8dB | Line output level | 4.8Vrms |
| 20Hz~20KHz: attenuation<0.3dB | |||
| Performance and parameters of RCA out (RCA out, USB DAC/Optical/Coaxial/AES decoding) | |||
| THD+N | <0.00027% (1kHz/-0dB@10KΩ) | SNR | ≥122dB (A-weighted) |
| Crosstalk | ≥117dB | Noise floor | <1.8uV (A-weighted) |
| Frequency response | 20Hz~70kHz: attenuation<2.8dB | Line output level | 2.4Vrms |
| 20Hz~20KHz: attenuation<0.3dB | |||