Fiio BTR5 2021 Flagship Portable High-Fidelity Bluetooth Amplifier (Black)

Current Stock:
Wired - USB-C
Wired - 2.5mm
Wired - 3.5mm
Wireless - Bluetooth
aptX-HD Certified
MQA Certified

The Fiio BTR5 2021 headphone amps equipped with USB Type C connector, it can make BTR5 2021 compatiable for other device more easier. There are 3.5+2.5mm dual outputs, bringing pure sound to a greater variety of earphones.

Enjoy hi-res wireless Bluetooth
Utilizing an Audiophile-approved performance bluetooth chip the Qualcomm CSR8675 is a low-power Bluetooth chip with enhanced audio capabilities, such as supporting 24-bit audio processing and possessing a 120 MHz DSP, allowing it to powerfully handle various Bluetooth decoding functions with ease. Your Bluetooth device can be transformed into a part of a Hi-Res Wireless setup by simply connecting it to the BTR5 2021. With the help of the BTR5 2021's Bluetooth version 5.0 supporting high-resolution formats such as AAC/SBC/aptX/aptX Low Latency/aptX HD/LDAC up to 96kHz, you can get a portable sounding setup with your current device! After you using it you would change your original opinion on the experience for bluetooth hi-res sound.

High-performance DAC ES9219C*2
The core of the BTR5 bluetooth receiver has been renewed with the ES9219C DAC chip with better decoding performance, higher signal-to-noise ratio, and lower power consumption. Let a new chapter in wireless sound quality begin!

Supports MQA
A new addition to the updated BTR5 2021 bluetooth headphone amp is support for MQA Renderer, allowing for high-resolution, master-level sound quality in reasonably sized files well-suited for your mobile device. PS: Supports up to MQA 16x decoding with applicable music apps.

FPGA precision clock management
An FPGA is responsible for the transmission and reception of Bluetooth and USB digital audio signals, as well as clock management. In the BTR5 2021, after the Bluetooth signal is processed through the FPGA, jitter is greatly reduced and signal stability is improved, completely solving the problem of different clock rates that exist between the different parts of the audio architecture. *Tests have shown that Bluetooth music playback quality under LDAC is as good as local playback on a high-end audio player.

Dual crystal oscillators
Independent dual crystal oscillators for accurate audio reproduction. With the addition of a dedicated FPGA, the 45.1584/49.152MHz dual crystal oscillators can more accurately reproduce audio signals under various sampling rates during Bluetooth and USB decoding.

Connect to wired headphones
Instantly improve the sound coming from your smartphone, dual headphone outputs, 3.5mm single-ended and 2.5mm balanced outputs. Next you could connect your phone or computer through bluetooth function to start your hifi music.

Connect to car's AUX in
You just need to connect our btr5 2021 with a AUX cable to AUX connector of your car's, and open its bluetooth mode to connect with your phone, then you could enjoy high-quality lossless music from your phone in your car. The BTR5 2021 amplifier is with in-vehicle mode which can automatically turns on and off with your car. PS: Download the FiiO Music App (or FiiO Control APP) to remotely control the BTR5 2021, making for a flagship-grade experience.

Connect to your desktop setup
Through our headphone amps, you would get more enjoyable high-quality music with your setup

Receive your TV's audio
If your TV or other device has bluetooth function, you could connect to it play lots of ways. Just have a try! You would love it! Turn on Switch mode: Switch freely between USB 1.0 / USB 2.0 for greater device compatibility including the Nintendo Switch and PS5 for immersive gaming

Good performance also with its battery
With a built-in 550mAh battery, the BTR5 2021 only takes 1.5 hours to fully charge but lasts for a length of 9 hours! *3.5mm output, using AAC codec

XMOS XUF208 control chip, supports 384kHz/DSD256
(1)The BTR5 2021 bluetooth amplifier is capable of asynchronous audio decoding under USB Audio Class 2.0. As a USB DAC, the BTR5 2021 can decode up to 384kHz sampling rate and native DSD256 decoding. (2)USB DAC functionality supports 2 modes. (3)When a USB connection is detected the BTR5 2021, it will automatically prompt you to turn on "USB Audio Adapter" mode, which turns off charging to the BTR5 2021 and allows you to use it as an audio dongle for your phone or other devices.

Displaying its beauty for all
The one display shows all – a major feature of the BTR5 2021 portable amplifier is the crisp 0.49 inch 64x32 resolution OLED screen that displays pairing/connection/call status/power status/encoding format/volume. And with the display, you can call up a menu that allows you to visually view and adjust the charging status, enable car mode, change filters and EQ, etc.


BTR5 2021

Color Available



 About 43.7 gincl. battery


About 72×32×11.1mm (exclusive of back clip)

Audio Input

 Bluetooth connection (Bluetooth 5.0 supported)

Supported Audio Format(s)

AAC/SBC/aptX/aptX LL/ aptX HD/LDAC

Driver-free mode(Switch mode)


In-vehicle mode




Mic Function

Support Bluetooth call, built-in omnidirectional microphone; support external microphone of CTIA cable

Single-ended Headphone Output

3.5 mm stereo port

USB Port

Type C USB

Balanced Headphone Output

2.5mm port

Recommended headphone impedance



Channel Balance

≤0.1 dB



Volume Control

Side buttons

Status indication

Display indicates the Bluetooth code, charging, battery, volume, sampling rate, menu

APP interconnection

Supports setting through App

Bluetooth Codes Display


Charging Time

≤1.5 h (DC 5V 500mA)

Power Input

Recommend DC 5V 500mA

Battery Capacity

550 mAh



Output Power

PO about 80mW32Ω loaded

Frequency Response

20Hz20kHz (aptX 

PO about 90mW16Ω loaded

BAL about 240mW32Ω loaded

20Hz40kHz (LDAC 

BAL about 240mW16Ω loaded


PO<0.003%(LDAC 1kHz 32Ω dbA)

Output Impedance

PO≤1.0Ω32Ω loaded

BAL<0.002%(LDAC 1kHz 32Ω dbA)

BAL≤2.0Ω32Ω loaded

Noise Floor

PO≤2uV 32Ω dbA


PO1.6V32Ω /THD+N1%

PO:  1.8V (no loaded)

BAL≤2.2uV32Ω dbA

BAL: 2.8V32Ω /THD+N1%

BAL: 3.6V(no loaded)


PO≥118dB (32Ω dbA)


PO≥ 79dB1kHz 32Ω loaded


PO≥ 95dB1kHz no loaded

BAL≥122dB(32Ω dbA)

BAL≥ 118dB1kHz 32Ω loaded

BAL≥119dB1kHz no loaded

Sampling Rate Supported Up to

384kHz/32bitUSB DAC 

DSD Support (USB IN)


hardware scheme

DAC: ES9219C * 2 , USB: XMOS XUF208 , Bluetooth CSR8675 


Standard version: charging cable, back clip, quick start guide, Type C to C skin-friendly silicone cable

Apple Deluxe Edition: charging cable, back clip, quick start guide, Type C to C skin-friendly silicone cable, 8 strands of silver-plated braided Type C to lightning cable

Frequently Asked Questions

Q1. What are the main differences between BTR5 2021 bluetooth amplifier and BTR5 bluetooth amplifier?

(1) DAC chip: BTR5 2021 adopts a brand new ES9219C DAC, has stronger decoding ability and better performance that provides high SNR while ensuring low power consumption. (2) Added MQA support:which can unfold the MQA tracks on the mobile phone. If music applications supports MQA, it can achieve 16x MQA unfolding. (3) The BTR5 2021 supports switching to the "USB Audio Adapter mode" (USB dongle) by just one press. When a USB connection is detected the BTR5 2021, it will automatically prompt you to turn on "USB Audio Adapter" mode, which turns off charging to the BTR5 2021 and allows you to use it as an audio dongle for your phone or other devices. Please press any button in 15s when the prompt menu jumps out. If there is no operation within 15 seconds, the charging function will stay on. (The pop-up menu can also be closed through the FiiO Control App). (4) A Type-C to Type-C cable is added to the accessory list. (5) The package box is newly designed in a science fiction style, and the back panel adds an MQA logo. (6) The software filters have been reduced from 6 to 2 (since the DAC has added MQA support, we canceled the internal filter).

Q2: How to connect the BTR5 2021 to two Bluetooth devices simultaneously? Why would the playback stutter sometimes?

The BTR5 2021 can be connected to two devices simultaneously, but simultaneous playback will take up some internal spaces in the BTR5 2021, so please avoid the 2 devices playing music at the same time.

The steps:

(1) Turn on the Bluetooth function on both device A and device B. Hold the power button of the BTR5 2021 for about 3s to turn it on (the display shows 'FiiO'), and then hold the multifunction button for about 5s to enter the pairing mode (the display shows 'PAIRING'). On device A, search for the BTR5 2021 and connect it.

(2) Disconnect the BTR5 2021 on device A (showing disconnected), and then hold the power button for about 3s to turn the BTR5 2021 off.

(3) Follow step 1 to turn on the BTR5 2021 again and enter pairng mode. On device 2, search for the BTR5 2021 and connect it.

(4) Go back to device A, tap BTR5 2021 to reconnect it.

Q3: How the BTR5 2021 work as a DAC for the computer(Windows/MacBook)?

Please go to our website to check the method by video, just google fiio.

Q4: How to use the BTR5 2021 as a USB DAC for mobile phones?

(1) At present, most mobile phones on the market can support the FiiO music App, but the USB audio standard of various phone brands is not uniform, so we cannot make sure full compatibility. (2) The BTR5 2021 supports a switch to "USB Audio Adapter Mode" by just one press. When a USB connection is detected the BTR5 2021, it will automatically prompt you to turn on "USB Audio Adapter" mode. At this time, just press any button so that it will turn off the charging function and enter the "USB Audio Adapter Mode".

PS: A. Android phone:Use the Type-C to Type-C cable included in the package to connect the BTR5 2021 to your mobile phone.

B. IPhone/IPad:Use Lightning to Type-C cable, like our LT-LT1 (users of BTR5 2021 standard edition need to buy extra one) to connect the BTR5 2021 to the iPhone/iPad/iPod.

Q5: How to use the MQA function of BTR5 2021?

The BTR5 2021 adds MQA support, which can unfold MQA tracks on the mobile phone. When working with music applications supporting MQA, it can achieve 16x MQA unfolding. "MQA" displayed on the BTR5 2021 means the MQA is working.

Q6:How to use the car mode?

After turning on the car mode, you can connect the BTR5 2021 to the on-board USB port, and the BTR5 2021 will power on automatically when the vehicle engine starts, and power off when the engine stops.

Q7:What to do if the BTR5 2021 is frozen?

If the BTR5 2021 is frozen, please try to hold the Power button for at least 10 seconds to reset it.

Q8:How to clear the pairing record on BTR5 2021?

Hold the Volume'+' and Volume'-' buttons at the same time for about 5s when the BTR5 2021 is powered on.

Q9:How to use aptX HD/LDAC?

High-quality Bluetooth codecs need the support of the transmitter (such as a mobile phone), and then we need to select the corresponding codec (Some mobile phones can choose the Bluetooth codec in the developer options, but different mobile phones have different settings. Please ask the mobile phone manufacturer for help.)

Q10:How to control the BTR5 2021 in the FiiO Control App?

1. Please update the FiiO Control App to the latest version.(you could check it out on our website)

2. Ensure that the FiiO Control App is the latest version. Enter the settings menu of the App-> Tap "Bluetooth device control"->Tap the BTR5 2021 to complete the connection. After a successful connection, it will enter the Bluetooth control menu.

1 year warranty from date of purchase. Headphones SG is a Fiio authorised reseller. All Fiio products purchased through Headphones SG is eligible for warranty.