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FiiO Q5s Portable USB DAC Headphone Amplifier


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Ex VAT: £290.83
Q5S portable USB DAC and headphone amp with an interchangeable amp module design, balanced and unbalanced outputs plus USB, Bluetooth, SPDIF and Line inputs.

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Condition: Brand new in original retail packaging

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Warranty length 1 Year
Colour Black
Brand FiiO

Tech Specs

- Sampling Rates: 768kHz / 32-bit (USB)
- Sampling: 96-192kHz / 24-bit (Opt/Coax)
- Chips Used: DAC: 2 x AK4490EQ
- Bluetooth: CSR8675
- LPF: 2 x OPA1642
- OP+AMP: AD8620 + OPA926
- Input: 1/8" / 3.5mm Line/Coax/Optical


Headphone Outputs
- 1 x 1/8" / 3.5 mm Unbalanced
- 1 x 0.098" / 2.5 mm Balanced
- 1 x 0.2" / 4.4 mm Balanced
Balanced Output
- 0.098" / 2.5 mm
- 0.2" / 4.4 mm
- USB: 11-pin Micro-USB and Charging


Headphone Impedance:
- 16 to 150 Ohms (Unbalanced)
- 16 to 300 Ohms (Balanced)
- Channel Balance: 0.1 dB
- Gain: High and Low, Bass Boost
- Vol Control: Potentiometer (ADC)
- App Control: Setting Through App
- Power Supply: 5V DC, 2A (recommend)
- Battery Capacity: 3800 mAh
- Charge Time: ≤3.5 Hours (5 VDC, 2 A)
- Battery Life: >25Hrs (Aux), >9.5Hrs
- Bluetooth: Bluetooth 5.0
- Supports: AAC,SBC,aptX/LL/HD,LDAC,HWA
- MFi Certified: Yes
- DSD Format: DSD64/128/256 (USB In)
- SNR: ≥115 dB (A-weighted)
- Freq Response: 5-90k Hz (-3dB)
- Channel Separation: >97 dB (1 kHz)
- Line Level: 1.8 Vrms


AM3A Headphone Out (Unbal)
- Output 1: ≥280mW 16 Ohms / THD+N
- Output 2: ≥210mW 32 Ohms / THD+N
- Output 3: ≥30mW 300 Ohms / THD+N
- Channel Sep: ≥75dB (1kHz, Aux In)
- Freq Response: 5 Hz to 50 kHz (-3 dB)
- Peak Output Voltage: >6 Vp-p
- SNR: ≥117 dB (A-weighted)
- Output Current: 150mA, Max (For Ref)
- Input Level: 3.8 Vrms, Maximum


AM3A Headphone Out (Bal)
- Output Power 1: ≥535 mW 16 Ohms / THD+N
- Output Power 2: ≥560 mW 32 Ohms / THD+N
- Output Power 3: ≥112 mW 300 Ohms / THD+N
- Channel Separation: ≥105 dB (1 kHz, Aux In)
- Frequency Response: 5 Hz to 50 kHz (-3 dB)
- Peak Output Voltage: >10.5 Vp-p
- SNR: ≥115 dB (A-weighted)
- Output Current: 150 mA, max


- Dimensions (LWH): 124 x 64 x 16mm
- Weight: 195g

Product Description

FiiO Q5s High-Res DAC and Headphone Amplifier employs a dual DAC design, with left and right channels each equipped with a next-generation AKM DAC for lower distortion, higher signal-to-noise ratio and more refined mids and highs. The dual AK4493EQ DACs work together with six carefully implemented amps to form a truly balanced audio design.

Upgraded clock management

To further improve sound quality, FiiO Q5s utilises the XMOS XUF208 USB decoding chip paired with a precise clock matching management system, allowing for support up to 768kHz/32 bit PCM and hardware-decoded native DSD so you can be sure of excellent sound no matter what format your music is in.

Wireless Bluetooth 5.0 

Thanks to the flagship Qualcomm CSR8675 chip, the Q5s supports Bluetooth 5.0 which ensures a stable, high quality Bluetooth audio experience. Various Bluetooth audio codec are supported such as the AAC, SBC, aptX, aptX low latency, aptX HD, LDAC and HWA.

Audiophile-grade power support

A well-designed power supply goes a long way towards achieving great sound. Alongside the numerous low-noise LDO regulators, the analogue, digital, low-pass, and amplification sections are independently powered and isolated from each other – ensuring your music comes through as clearly and purely as possible.

Decoding capabilities

With XMOS clock management system, the Q5s has unparalleled decoding capabilities over USB, SPDIF and Bluetooth. USB supports up to 768kHz/32 bit and native hardware decoded DSD; SPDIF supports up to 192kHz/24 bit and Bluetooth supports up to 96kHz/24 it (under LDAC).

Intelligent craftsmanship

The back of the Q5s is made of high-quality polyurethane leather. The three buttons and an upgraded volume knob on the side allow for an ergonomic and tactile way to interact with your music. The original Q5 had a separate power button and volume knob. However, with the Q5s, turning it on and off is controlled by simply turning the volume knob past a certain point – making it more convenient and easier to use.

Intuitive LED Indicators

Each input mode is represented with a separate indicator light, so you know what's playing from with just a glance. Long-press the input selection button on the side to view how much battery is left using the status of the 4 LEDs.

Exhaustive connectivity options

The Q5s continues the interchangeable amp module design of its predecessor and is fully compatible with all prior FiiO amp modules. The new amp module AM3E is versatile with 3.5mm single-ended as well as both 2.5mm and 4.4mm balanced outputs. Q5s also supports line-out output.

In addition to USB input and Bluetooth decoding, the Q5s supports SPDIF digital input and line-in analogue input. The coaxial, optical, and analogue line-in input are all handled through a multifunction input port that supports up to 192kHx/32 bit.

The gain and bass boost control circuits ensure that the quality of your music doesn’t diminish while still letting you get your music to sound exactly the way you want it.

Rechargeable Battery

The massive built-in 3800mAh rechargeable polymer lithium-ion battery is sure to be able to get you through the day in most situations. USB decoding and Bluetooth have an estimated battery life of 9 hours, coaxial has 10 hours estimated while Aux offers up to 25 hours of playback.

With the automatic shutdown function, if there is no input source or no music has been played through a connected input source after a set time (10 minutes by default), the Q5s will automatically turn itself off, further enhancing battery life and saving energy until you really need it.

When connected to your computer, the Q5s will automatically adjust its charging current and rate according to smart detection of the USB port’s output capability. When connected to a phone via USB, the Q5s will automatically know not to charge and draw power from it so you can just use the Q5s free of any worries. 

ADC volume adjustment

You no longer have to be annoyed by tiny volume unbalances between the left and right channel with ADC volume adjustment on the Q5s. The ADC curve reconstruction process effectively eliminates any channel volume imbalance that occur when adjusting the volume through a traditional analogue potentiometer, and also allows for much greater precision in adjusting the volume in tiny steps.

No need to install drivers

FiiO Q5S is fully compatible with both USB Audio 1.0 & 2.0. For ultimate convenience, you can simply enable the SUB Audio 1.0 mode to experience decoding up to 96kHx/24 bit PCM without needing to install any drivers. Press and hold the previous track button, then connect via USB to start USB Audio 1.0 mode

With the FiiO Music app, after connecting via Bluetooth you can adjust the channel balance, select the low-pass filter, control the RGB lights, and customise the power-saving timer of the Q5S. This USB DAC/Headphone amplifier is Hi-Res Audio certified, Hi-Res Audio Wireless certified, Apple MFi certified, Qualcomm aptX certified, and Sony LDAC certified.

Key Features

- Dual AK4493EQ DAC chips
- XMOS XUF208 USB decoding chip/Native DSD decoding
- Bluetooth 5.0, using CSR8675 Qualcomm chip
- Bluetooth codec: AAC, SBC, aptX, aptX HD, LDAC, HWA
- Coaxial, Optical, Line-in and USB inputs
- RGB lights indicating the audio format
- SPDIF digital input and line-in analogue input
- Gain and bass boost controls
- AM3E amp: 3.5mm single-ended, 2.5mm, 4.4mm bal outputs
- Detachable, backwards-compatible with earlier amp modules

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Contact Details

UK Local Rate Number
0844 50 403 50

Sales Landline
0121 224 7300/7401

Customer Services Landline
0121 224 7350/7351

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