Portable Desktop-Grade Machine-Q15

The Q15 features a new desktop mode, sporting a separate Type-C power connector for it. When the Q15 is connected to the PD power adapter, the Q15 will be powered externally completely bypassing the battery, allowing for a desktop-like experience even on the go.

1600mw of Astonishing Power Rivaling Desktop Amps

When put in Desktop Mode, the Q15 under balanced output is capable of putting out 1600MW in enhanced over-ear headphone mode, which is more than enough to easily drive various IEMs and full-size headphones.

Coaxial

Connect to CDs/digital streamers/digital audio players/receivers and other devices, supporting up to 192kHz/24bit PCM and DSD64.

USB/Bluetooth/Coaxial Decoding Useful Everywhere

The Q15 packs USB DAC, Bluetooth, coaxial decoding and other modes all into one device, making it easier for you to connect various kinds of devices for different usage scenarios.

USB: Connect to computers/phones/tablets/game consoles and other devices, supporting up to 768kHz/32bit PCM and DSD512.

Bluetooth

Connect to phones/tablets/digital audio players and other devices, supporting high-res Bluetooth codecs including LDAC/aptx Adaptive.

AKM Flagship Dac Combo AK4191EQ+AK4499EX

The Q15 features AKM's newest DAC combination-the AK4191EQ+AK4499EX. When working in tandem with the newly developed "DWA Routing Technology", audio performance is greatly improved. The result is a more detailed, yet natural and realistic sound that makes the listener think they have been transported to the concert site.

Self-Developed Digital Cores Stable and Efficient Operation

Featuring digital components on the same level as those of the FIIO Q7, the Q15 relies on the ARM processor to realize USB/coaxial/Bluetooth decoding in one, capable of processingdigital audio signals with low latency and high efficiency. Featuring digital components on the same level as those of the FIIO Q7, the Q15 relieson the ARM processor to realize USB/coaxial/Bluetooth decoding in one, capable of processingdigital audio signals with low latency and high efficiency.

XMOS 16-Core XU316

Supports 768kHz/32bit PCM, DSD512 and MQA full: decoding.

TI Cortex M4 Processor

Ensures stable and efficient operation of various systems.

Dual Audio Crystal Oscillators, Asynchronous/ Self-Adaptive Dual Mode Management

Adapt to various sound sources and sampling rates accurately and stably.

Full-Color IPS Display Visually Pleasant Control

The full-color IPS display makes it easier for you to see the current status of the device, such as the current sampling rate, volume, gain, and other information. Helping you to both adjust the volume and easily navigate through the settings is an intuitive volume knob.

Phone Mode Switch with Just One Touch

FIIO engineers implemented a "Phone Mode" switch to make the Q15 better suited for use with phones. Turn on Phone Mode* and the Q15 will be powered by the built-in battery, not consuming the phone's battery.

RCA Coaxial Connector Complete Audio Signal Transmission

Thanks to the carefully designed internals, the Q15 also comes with a coaxial input. This allows the Q15 to be directly connected to digital streamers and CD players through ordinary coaxial cables, avoiding any losses from not using a direct connection.

Perfect Size Perfect Feel

It is the first time that the Q15 uses AG glass for its back panel, which is anti-scratch and anti-fingerprint with a delicate touch. Coupling with the golden size ratio of 18:9 makes it comfortable to use both when being handheld and when bundlec with other portable devices. Whether you are simply on the go or on a business trip, you can easily remain in control of your high-quality sound.

Precisely Designed Inside Sophisticated Audio Circuit

A meticulously designed, complete audio circuit with DAC- IV-LPF-gain-headphone amplifier stages ensures the Q15 is capable of ample dynamic range and bringing excellent sound fidelity. The variable gain and variable voltage design maximizes the performance of the audio circuit. There are separate low-voltage low-gain and high-voltage high-gain modes, suitable respectively for lEMs and full-size headphones.

15-Way Digital-Analog Power Supply Extensive Energy Storage

Inside the Q15 is a 15-way digital-analog power supply, with power supply systems for the digital portion, analog portion, headphone amps, etc. 21 low-noise LDOs are distributed for accurate regulation, and 35 low-resistance tantalum capacitors distributed for abundant energy reserves.

DAC and LPF Power Supply

Headphone Amp Power Supply

High-Precision and Low-Noise an Expert in Audio Restoration

FIIO engineers specially selected 60 1% precision, low- temperature drift resistors, and 28 wide temperature range NPO capacitors for the Q15, allowing it to faithfully reproduce high-quality audio with the utmost fidelity even in the most demanding conditions.

Global PEQ Adjust to Personal Taste

The Q15 comes with 7 EQ presets and 3 customizable PEQ* presets. PEQ can be used in both Bluetooth mode* and USB DAC mode*. Through FIIO's self-developed PEQ algorithm and user interface, you can choose the exact frequencies to be adjusted along with their gain levels and bandwidth - allowing you to fine- tune the sound to exactly the way you want it.

Comprehensive Protection Comprehensive Peace of Mind

FIIO engineers have implemented a multitude of hardware and software-controlled protection mechanisms, allowing you to enjoy great sound without worries.

Max volume limit, to avoid hearing damage; Durable high temperature resistant battery + dynamic charge and discharge temperature-based control+ charging protection + battery isolation, all work together to prolong battery durability; The over-heating, over-voltage, and DC protection mechanism allows the Q15 to stably output power by ensuring the audio circuit works properly and ensures the safety of the connected headphones.

Screen Orientation Change

Upside down or right-side up, it all works.

With a Versatile Knob

The versatile knob achieves a variety of functions, volume adjusting input switching, menu settings, etc.

Digital and Analog Shielded Partitions

The digital and analog portions of the audio circuit are separated and shielded from each other to reduce crosstalk between the two portions and to protect against external interference.

6 Built-In Filters

Experience subtle changes in the sound.

Automatic Power Saving

Choose when the screen goes to sleep, helping to save power according to your usage habits.

Supports App Control

Control your device and adjust functions through the FIlO Control App.

Variety of Inputs and Outputs

Meeting many usage needs.

Specifications:

General Specifications:

• Name/Model: Q15
• Hardware Solution:
  • DAC: AK4191EQ + AK4499EX
  • USB: XMOS XU316
  • Bluetooth Decoding: QCC5125
• Volume Control: Volume knob
• Weight: About 305g
• Dimensions: About 143.5 × 71.75 × 21.75 mm
• MQA: Supports MQA Full Decoder
• Driver-free Mode: Supported (Switch Mode)
• Gain Modes: Ultra High (Desktop mode with QC power) / Super High / High / Medium / Low
• Display: 1.30-inch TFT (240 × 240), bezel-less display
• FiiO Control: Supports settings through app
• Status Display: Bluetooth codec, sampling rate, charging status, battery level, volume level,input source, gain level, power mode
• Sampling Rate Display:
  • Cyan: 44.1kHz / 48kHz
  • Yellow: 88.2 / 96 / 176 / 352.8 / 384 / 705.6 / 768kHz
  • Green: DSD64 / 128 / 256 / 512
  • Purple: MQA
• Bluetooth Codec Display:
  • Blue: SBC
  • Cyan: AAC
  • Purple: aptX / aptX LL
  • Yellow: aptX HD
  • White: LDAC
  • Green: aptX Adaptive
• Channel Balance: <0.2dB
• Bluetooth Reception (5.1): AAC / SBC / aptX / aptX LL / aptX Adaptive / aptX HD / LDAC
• Max. Sampling Rate:
  • USB DAC: Up to PCM 768kHz / 32bit, Native DSD512
  • Coaxial Decoding: Up to PCM 192kHz / 24bit
• Firmware Upgrade:
  • Bluetooth firmware supports upgrade through OTA
  • XMOS/system firmware supports upgrade through USB
• Recommended Impedance:
  • PO: 8~150Ω
  • BAL: 8~350Ω

Buttons and Ports:

• Buttons:
  • Power button ×1
  • Play/Pause ×1
  • Previous track ×1
  • Next track ×1
  • Encoder knob (with confirm button) ×1
• USB:
• Type-C USB 2.0 ×2 Black USB: Charging / Data transfer
• Orange POWER IN: Charging
• Headphone Output: Standard 3.5mm port
• BAL Headphone Output: Standard 4.4mm port
• Line-out Output: Standard 3.5mm port (shared with PO)
• BAL Line-out Output: Standard 4.4mm port (shared with 4.4mm BAL headphone out)
• Digital Coaxial Input: RCA port
• Toggle Switches:
  • PHONE MODE switch ×1
  • DESKTOP MODE switch ×1

Power Supply Parameters:

• Power Supply: Supports PD fast charging and ordinary charging
• Battery Capacity: 5500mAh lithium polymer battery
• Charging Time: About 3.5 hours (PD fast charge)
• Battery Life and Test Conditions:

3.5mm headphone out:

• Battery Life: ≥9 hours
• Audio Input: USB decoding / coaxial decoding
• Gain Level: Super High Gain mode
• Volume Level: L40
• Playing Track and Format: MP3 44.1kHz/16bit
• Display Status: OFF
• Charging Switch: OFF
• Load: 32Ω

4.4mm BAL headphone out:

• Battery Life: ≥8 hours
• Audio Input: USB decoding / coaxial decoding
• Gain Level: Super High Gain mode
• Volume Level: L34
• Playing Track and Format: MP3 44.1kHz/16bit
• Display Status: OFF
• Charging Switch: OFF
• Load: 32Ω

3.5mm Headphone Out:

• Battery Life: ≥9 hours
• Audio Input: Bluetooth
• Bluetooth Codec: AAC
• Volume Level: L40
• Gain Level: Super High Gain mode
• Display Status: OFF
• Playing Track and Format: MP3 44.1kHz/16bit
• BASS/EQ: OFF
• Load: 32Ω

4.4mm BAL Headphone Out:

• Battery Life: ≥8 hours
• Audio Input: Bluetooth
• Bluetooth Codec: AAC
• Volume Level: L34
• Gain Level: Super High Gain mode
• Display Status: OFF
• Playing Track and Format: MP3 44.1kHz/16bit
• BASS/EQ: OFF
• Load: 32Ω

Audio Parameters:

Parts of Performance and Parameters of Headphone Output (3.5mm out, USB DAC/Coaxial decoding, Ultra High Gain mode):

• Output Power:
  • L+R ≥ 750mW + 750mW (16Ω, THD+N <1%)
  • L+R ≥ 625mW + 625mW (32Ω, THD+N <1%)
  • L+R ≥ 85mW + 85mW (300Ω, THD+N <1%)
• Output Impedance: <1Ω
• Crosstalk: ≥72dB
• Peak Output Voltage: 14.5Vp-p
• SNR: ≥123dB (A-weighted)
• THD+N & Noise:
  • <0.0005% (1kHz / -9dB @ 32Ω)
  • <0.0004% (1kHz / -6dB @ 300Ω)
• Frequency Response:
  • 20Hz~80kHz: damping <3dB
  • 20Hz~20kHz: damping <0.1dB
• Noise Floor: <3.1uV (A-weighted)

Parts of Performance and Parameters of Headphone Output (3.5mm out, USB DAC/Coaxial decoding, Super High Gain mode):

• Output Power:
  • L+R ≥ 520mW + 520mW (16Ω, THD+N <1%)
  • L+R ≥ 400mW + 400mW (32Ω, THD+N <1%)
  • L+R ≥ 55mW + 55mW (300Ω, THD+N <1%)
• Output Impedance: <1Ω
• Crosstalk: ≥72dB
• Peak Output Voltage: 11.5Vp-p
• SNR: ≥121dB (A-weighted)
• THD+N & Noise:
  • <0.00045% (1kHz / -7dB @ 32Ω)
  • <0.0004% (1kHz / -4dB @ 300Ω)
• Frequency Response:
  • 20Hz~80kHz: damping <3dB
  • 20Hz~20kHz: damping <0.1dB
• Noise Floor: <3uV (A-weighted)

Parts of Performance and Parameters of Line-out Headphone Output (3.5mm Out, USB/DAC/Coaxial Decoding) :

• THD+N & Noise: <0.00042% (1kHz / -4dB @ 10KΩ)
• SNR: ≥ 123dB (A-weighted)
• Crosstalk: ≥ 105dB
• Noise Floor: <1.6uV (A-weighted)
• Frequency Response:
  • 20Hz~80kHz: damping <3dB
  • 20Hz~20kHz: damping <0.1dB
• Line Output Level: 2Vrms

Parts of Performance and Parameters of Bal Headphone Output (4.4mm Out, USB DAC/Coaxial Decoding, Ultra High Gain Mode):

• Output Power: L+R ≥ 635mW + 635mW (16Ω, THD+N <1%)
• Output Power: L+R ≥ 1610mW + 1610mW (32Ω, THD+N <1%)
• Output Power: L+R ≥ 340mW + 340mW (300Ω, THD+N <1%)
• Output Impedance: <1.5Ω
• Crosstalk: ≥ 113dB
• Peak Output Voltage: 29Vp-p
• SNR: ≥ 123dB (A-weighted)
• THD+N & Noise:
  • <0.00055% (1kHz / -14dB @ 32Ω)
  • <0.0003% (1kHz / -2dB @ 300Ω)
• Frequency Response:
  • 20Hz~80kHz: damping <3dB
  • 20Hz~20kHz: damping <0.1dB
• Noise Floor: <4.8uV (A-weighted)

Parts of Performance and Parameters of Bal Headphone Output (4.4mm Out, USB DAC/Coaxial Decoding, Super High Gain Mode):

• Output Power: L+R ≥ 675mW + 675mW (16Ω, THD+N <1%)
• Output Power: L+R ≥ 1060mW + 1060mW (32Ω, THD+N <1%)
• Output Power: L+R ≥ 215mW + 215mW (300Ω, THD+N <1%)
• Output Impedance: <1.5Ω
• Crosstalk: ≥ 113dB
• Peak Output Voltage: 23Vp-p
• SNR: ≥ 121dB (A-weighted)
• THD+N & Noise:
  • <0.00055% (1kHz / -13dB @ 32Ω)
  • <0.00025% (1kHz / -4.5dB @ 300Ω)
• Frequency Response:
  • 20Hz~80kHz: damping <3dB
  • 20Hz~20kHz: damping <0.1dB
• Noise Floor: <4.8uV (A-weighted)

Balanced Line Headphone Output Part Performance Parameters (4.4mm Output, USB/DAC/Coaxial Decoding):

• THD+N & Noise: <0.00027% (1kHz / -5dB @ 10KΩ)
• SNR: ≥ 126dB (A-weighted)
• Crosstalk: ≥ 105dB
• Noise Floor: <1.8uV (A-weighted)
• Frequency Response:
  • 20Hz~80kHz: damping <3dB
  • 20Hz~20kHz: damping <0.1dB
• Line Output Level: 4Vrms